小数乘法计算题练习
小数乘法练习题
小数乘法练习题小数乘法是数学中一个基础而重要的概念,掌握了小数乘法的规则和方法,可以方便计算各种实际问题。
本文将通过一系列小数乘法练习题,帮助读者巩固对小数乘法的理解和应用。
练习题一:计算下列小数的乘法。
1. 0.5 ×2.5 = ?2. 1.2 × 0.3 = ?3. 3.75 × 0.4 = ?4. 0.09 × 0.02 = ?5. 0.15 × 0.9 = ?解答:1. 0.5 ×2.5 = 1.252. 1.2 × 0.3 = 0.363. 3.75 × 0.4 = 1.505. 0.15 × 0.9 = 0.135练习题二:计算下列小数的乘法,并保留两位小数。
1. 0.7 × 0.3 = ?2. 0.25 × 1.8 = ?3. 2.3 ×4.6 = ?4. 1.6 × 0.05 = ?5. 0.03 × 0.008 = ?解答:1. 0.7 × 0.3 = 0.212. 0.25 × 1.8 = 0.453. 2.3 ×4.6 = 10.584. 1.6 × 0.05 = 0.08练习题三:计算下列小数的乘法,并写成科学计数法。
1. 0.52 × 0.06 = ?2. 0.008 × 0.003 = ?3. 0.45 × 0.005 = ?4. 0.02 × 0.001 = ?5. 0.002 × 0.004 = ?解答:1. 0.52 × 0.06 = 3.12 × 10^(-2)2. 0.008 × 0.003 = 2.4 × 10^(-5)3. 0.45 × 0.005 = 2.25 × 10^(-3)4. 0.02 × 0.001 = 2 × 10^(-5)5. 0.002 × 0.004 = 8 × 10^(-6)练习题四:根据已知条件,计算下列问题。
小数乘法计算道含答案
小数乘法计算600道第一部分一.计算题(共50小题)1.直接写出得数.0.4×0.02= 1.8×0.4=6×0.25= 1.25×0.8=3﹣0.98=0.9÷0.01= 3.9×0.01=99×0.25=2.用竖式计算下面各题.2.4×1.5= 0.46×8.7=(保留一位小数) 2.24×1.8=(保留两位小数)3.用竖式计算.(得数保留两位小数)3.35×1.7≈ 5.63×3.9≈4.用竖式计算.2.97×3.5= 6.05×0.83= 0.78×4.5= 3.36×3.67=5.直接写得数.6.2×0.3= 2.5×0.8=0.06×5=0.16×25=5×2.1=0×48.76=6.用竖式计算(计算结果小数部分超过两位的,保留两位小数).6.02×0.350.59÷1.4.7.按要求算一算.2.9×1.8 4.58×0.37 0.8×2.5(得数保留一位小数)5.45×1.72(得数保留两位小数)8.列竖式计算:1.8×0.85= 7.6﹣2.19= 50﹣18.75=9.用竖式计算.4.68×1.2= 1.58×2.5=10.竖式计算.1.35×270 6.4×8.05.11.用竖式计算.12.竖式计算.0.94×5.3= 0.91×2.6= 4.06×0.75(保留两位小数)≈8.43×1.5= 0.25×3.2= 7.8×0.9(保留一位小数)≈13.直接写出得数.0.25×4= 1.25×8=8.2×6.9×0=0.2×18= 6.29×100=0.02×500= 3.4×2=0.26×0.5= 14.我会口算.0.5×4.4=80÷1.6= 5.5÷0.11=0.06×5= 5×0.4×0.8=9.9+10.1= 1.25×0.8=0.08÷0.1= 4﹣0.15= 1.7×5+0.3×5=15.口算.3π=5π=5×3.14=0.5×7=92=62﹣32=4π﹣1.5π=34.6÷0.5=16.用竖式计算,得数保留一位小数.2.4×6.7≈3.5×0.5≈17.直接写出得数.0.8×25=0×4.23=0.57+0.43=2.4×0.2=0.02×500= 2.8×10=8.29×100= 2.5×0.4= 4.87﹣1.7=18.列竖式计算.0.64×12.5= 2.8×0.17=19.直接写出得数.0.7×0.9= 0.14×0.3= 5.5×10= 2.6×0.5= 20.用竖式计算2.75×3.1= 3.18×5.45=0.76×2.18≈(得数保留两位小数)0.09×1.7≈(精确到十分位)21.列竖式计算0.36×0.15=(得数保留两位小数) 1.45×0.12=0.86×1.4=(得数保留一位小数) 6.5×0.39=22.用竖式计算.8×0.12= 1.9×3.5= 2.3×1.29=(验算)0.401×0.3=0.45×0.96=0.17×0.71=(得数保留两位小数)23.直接写得数.70×0.01= 2.515×10= 1.1×0.4=10﹢0.3= 6.5×0.2=0.1×0.01=0.87﹣0.6= 1.7×3=24.竖式计算.(得数保留一位小数)0.38×0.23 5.79×3.6 4.6×0.25.25.竖式计算.3.6×0.25= 9.8﹣1.64= 3.1×300=26.口算.0.7×0.5= 3.6×2=0.4×1.7= 4.5×6=0.36+9= 5.7+3= 6.6×2=0.1×3.1= 27.直接写出计算结果0.3×1.1= 5.79+2.31+4.21=0.25×4= 1.2÷0.4=1.5×0.6= 1.59÷0.3=0.5×101= 6.5﹣5=10﹣8.88﹣0.12=0.64÷1.6×1.5=28.直接写得数.0.6×0.7=0.8×5= 1.1×0.4=2.3×4×0=0.05×1.6=0.02×7=29.用竖式计算.0.32×0.8= 1.36×4.8= 17.3×0.06=30.用竖式计算.1.45×0.12= 3.08×0.28= 13.5×26.7= 3.15×0.35≈(保留一位小数)31.口算.9.37×0= 7.3×100= 289+72﹣89= 1﹣0.04= 4×8÷8×4=32.列竖式计算:30.5×0.76 0.54×0.19.33.直接写得数:2.5×33.06×2 0.25×44.2×105.3×100 2.5×62.2×4 1.6×4 1.25×834.竖式计算0.38×0.25= 0.12×15=8.5×0.39=(验算)0.87×1.5(保留二位小数)35.用竖式计算并验算.14.53+5.67 7.2﹣6.45 1.05×2.8 62.9÷1.7.36.口算:0.5×2=0.25×4=12.5×8=0.125×8=7÷0.7=1﹣0.125×8= 1.25×32=0.25×56=37.口算0.2×0.4=8.2+1.8= 6.45×0.01= 2.5×0.4=0.8×50= 2.4×5=0.9﹣0.52=10.2×4.5=38.竖式计算,带*的要验算*4.23×0.02836×0.5631.5×24.50.8×0.56*0.63×1.05 1.8×3.6739.竖式计算35.4×0.8 7.63×1.2 0.08×1.14 3.17×2.8(得数保留两位小数)0.3×5.6(得数保留一位小数)54.3×0.7(得数保留整数)40.列竖式计算24.6÷12 4.32÷1.2 21÷0.15.41.直接写出得数0×7= 2.6+0.4=15×0.01=21.2﹣21=1.8a+0.2a=0.4×0.4=2.5×4×0=0.72×0.8=42.口算.0.12×100= 6.2×10=500÷1000=12万+3万=8a+a= 6.2÷10=3.74×100=23.6÷100= 3.25×10=43.竖式计算0.18×12 3.26×15 3.1×17 1.25×4 14×0.5 8.4×15 0.45×9 1.5×35 0.02×13 4.28×16 2.61×1844.直接写出得数.40×1.2=25×0.4=63=7.8+0.9=0.56+4.44=2.4×0.5= 1.25×80=3.6÷0.06=12÷0.4=82=45.列竖式计算2.034×18 4.06×3.8 (积保留两位小数)46.计算4×38.2= 8×0.352= 35.6×5= 6.7×3=47.口算9.5×0.2= 3.2×0.5=0.8×2.5= 4.4×0.4=35×0.4= 4.8×50= 4.8×0.25=8.8×5= 1.4×0.5=12.5×4= 48.竖式计算.☆0.43×27= 1.85×2.6=验算:49.直接写出得数.0.7×0.9= 2.6×0.5=0.14×0.3= 5.5×10=1.7×0.03= 1.8×0.04=0.12×6= 4.8×5=50.竖式计算.5.6×1.8= 0.25×0.046≈(保留两位小数)3500×0.96=第二部分一.计算题(共50小题)1.列竖式计算:1.8×0.36=35.37+28.63=19.9﹣8.75=1.06×0.48=18.9+28.65=22.87﹣18.65=2.用竖式计算下面各题.2.4×1.5= 0.46×8.7=(保留一位小数) 2.24×1.8=(保留两位小数)3.直接写得数.0.102×100= 4.2+3=0.23×0.5=0.25×7×0.4=3.6÷0.6=42=0.1÷0.01=2×0.5+1=4.用竖式计算(计算结果小数部分超过两位的,保留两位小数).6.02×0.35 8.74÷3.8 0.59÷1.4.5.列竖式计算:1.8×0.85= 7.6﹣2.19= 50﹣18.75=6.用竖式计算.4.8×0.25 9.3×1.3 9.8×0.5 2.1×2.15.7.用竖式计算.(得数保留两位小数)3.35×1.7≈ 5.63×3.9≈8.直接写出得数.0.12×0.4= 3.8÷100=56.56÷0.56 1.6+3.04=19.28﹣0.8= 2.8÷0.7=0.53×1000=108÷2.5÷4=9.列竖式计算3.48×1.05(计算并验算) 1.55÷3.8(得数保留两位小数)10.竖式计算0.64×18=25.8×102=40.7×0.25=13.45×2.6=(保留整数) 4.865×8≈(保留整数)10.23×42≈(保留一位小数)11.直接写得数.6.2×0.3= 2.5×0.8=0.06×5=0.16×25=5×2.1=0×48.76=12.按要求算一算.2.9×1.8 4.58×0.370.8×2.5(得数保留一位小数) 5.45×1.72(得数保留两位小数)13.用竖式计算.84×0.25=0.55×64=0.47×5.8=6.06×0.32=0.075×0.07= 3.7×9.77=14.列竖式计算.3.4×0.25 6.5×2.4 0.035×0.6 1.25×0.024.15.用竖式计算.2.97×3.5= 6.05×0.83= 0.78×4.5= 3.36×3.67=17.竖式计算4.57×1.8 0.125×0.8 3.75×0.249.37×8.5 2.07×3.6 3.35×1.6.18.竖式计算.0.94×5.3= 0.91×2.6= 4.06×0.75(保留两位小数)≈8.43×1.5= 0.25×3.2= 7.8×0.9(保留一位小数)≈19.我会口算.0.5×4.4=80÷1.6= 5.5÷0.11=0.06×5= 5×0.4×0.8=9.9+10.1= 1.25×0.8=0.08÷0.1= 4﹣0.15= 1.7×5+0.3×5=20.列竖式计算,带*号的要验算.25.78+3.12= 13.8×9= *8﹣2.67= *5.73+6.7=21.直接写出得数.0.125×100=60÷100=9÷10=0.32+4.68= 15.7+4.3=25×4=10﹣0.8=7×99+7= 14.6+0.34=30.5+2.5=24﹣7.54﹣2.46=26+19+74+81= 22.用竖式计算.4.68×1.2= 1.58×2.5=23.用竖式计算,得数保留一位小数.2.4×6.7≈3.5×0.5≈24.竖式计算7.6×0.82= 3.25×0.31= 7.5×0.59=(验算)25.口算.3π=5π=5×3.14=0.5×7=92=62﹣32=4π﹣1.5π=34.6÷0.5= 26.直接写出得数.0.8×25=0×4.23=0.57+0.43= 2.4×0.2=0.02×500= 2.8×10=8.29×100= 2.5×0.4= 4.87﹣1.7= 27.列竖式计算.0.64×12.5= 2.8×0.17=28.列竖式计算4.8×17 1.88×25 2.4×0.37 0.89×5.3.29.列竖式计算.(得数保留两位小数)2.375×105 5.16×4.3 0.45×0.206.30.列竖式计算.0.04×0.12 4.25×8.8 3.84×0.25.31.竖式计算.3.6×0.25= 9.8﹣1.64= 3.1×300=32.用竖式计算2.75×3.1= 3.18×5.45=0.76×2.18≈(得数保留两位小数)0.09×1.7≈(精确到十分位)33.列竖式计算0.36×0.15=(得数保留两位小数) 1.45×0.12=0.86×1.4=(得数保留一位小数) 6.5×0.39=34.用竖式计算.8×0.12= 1.9×3.5= 2.3×1.29=(验算)0.401×0.3=0.45×0.96=0.17×0.71=(得数保留两位小数)35.直接写出得数.0.7×0.9= 0.14×0.3= 5.5×10= 2.6×0.5=36.列竖式计算:30.5×0.76 0.54×0.19.37.竖式计算.1.35×270 6.4×8.05.38.直接写得数.70×0.01= 2.515×10= 1.1×0.4=10﹢0.3= 6.5×0.2=0.1×0.01=0.87﹣0.6= 1.7×3=39.列竖式计算24.6÷12 4.32÷1.2 21÷0.15.40.2.6+0.4=直接写出得数.0×7=15×0.01=21.2﹣21=1.8a+0.2a=0.4×0.4=0.12×0.04=0.8×100=2.5×4×0=0.72×0.8=41.竖式计算.(得数保留一位小数)0.38×0.23 5.79×3.6 4.6×0.25.42.用竖式计算.0.32×0.8= 1.36×4.8= 17.3×0.06=43.竖式计算(*验算)8.4×0.15= 16.51﹣6.3= 900﹣4.58= *56.7+0.33=44.口算.0.7×0.5= 3.6×2=0.4×1.7= 4.5×6=0.36+9= 5.7+3= 6.6×2=0.1×3.1= 45.用竖式计算.1.45×0.12= 3.08×0.28= 13.5×26.7=3.15×0.35≈(得数保留一位小数)46.竖式计算0.38×0.25= 0.12×15=8.5×0.39=(验算)0.87×1.5 (得数保留二位小数)47.直接写出计算结果0.3×1.1= 5.79+2.31+4.21=0.25×4= 1.2÷0.4=1.5×0.6= 1.59÷0.3=0.5×101= 6.5﹣5= 10﹣8.88﹣0.12=0.64÷1.6×1.5=48.竖式计算0.38×0.25 150×0.12 0.87×1.91.28×2.3 2.07×0.24 0.17×1.0549.用竖式计算.8×0.12=(验算) 1.9×3.5=(验算)0.401×0.3= 0.45×0.96= 0.17×0.71=50.直接写出得数.0.13×0.2=1﹣0.9=0.32÷2=0.8×5=0.9×0.1= 3.11+2.22=0.52=8m﹣6m=1.62﹣0.62= 5.9+4.4=0.053×100=12.5+12.5×7=第一部分参考答案与试题解析一.计算题(共50小题)1.【解答】解:0.4×0.02=0.0081.8×0.4=0.726×0.25=1.5 1.25×0.8=13﹣0.98=2.020.9÷0.01=903.9×0.01=0.03999×0.25=24.752.【解答】解:(1)2.4×1.5=3.6(2)0.46×8.7≈4.0(3)2.24×1.8≈4.033.【解答】解:3.35×1.7≈5.70 5.63×3.9≈21.964.【解答】解:2.97×3.5=10.395 6.05×0.83=5.02150.78×4.5=3.51 3.36×3.67=12.33125.【解答】解:6.2×0.3=1.862.5×0.8=20.06×5=0.30.16×25=45×2.1=10.50×48.76=06.【解答】解:6.02×0.35≈2.118.74÷3.8=2.30.59÷1.4≈0.427.【解答】解:2.9×1.8=5.22 4.58×0.37=1.69460.8×2.5=2.0 5.45×1.72≈9.378.【解答】解:1.8×0.85=1.537.6﹣2.19=5.4150﹣18.75=31.259.【解答】解:4.68×1.2=5.616 1.58×2.5=3.9510.【解答】解:1.35×270=368.5 6.4×8.05=51.5211.【解答】解:(1)36×5.5=198;(2)18×3.06=55.08;(3)3.45×21=72.45;(4)0.28×0.25=0.07;(5)150×0.12=18;(6)0.87×1.5=1.305;(7)0.4×0.076=0.0304;(8)1.5×0.062=0.093;(9)6.5×0.04=0.26.12.【解答】解:(1)0.94×5.3=4.982;(2)0.91×2.6=2.366;(3)4.06×0.75≈3.05;(4)8.43×1.5=12.645;(5)0.25×3.2=0.8;(6)7.8×0.9≈7.0.13.【解答】解:0.25×4=1 1.25×8=108.2×6.9×0=00.2×18=3.66.29×100=6290.02×500=103.4×2=6.80.26×0.5=0.1314.【解答】解:0.5×4.4=2.280÷1.6=50 5.5÷0.11=500.06×5=0.35×0.4×0.8=1.69.9+10.1=20 1.25×0.8=10.08÷0.1=0.84﹣0.15=3.85 1.7×5+0.3×5=1015.【解答】解:3π=9.425π=15.75×3.14=15.70.5×7=3.592=8162﹣32=274π﹣1.5π=7.8534.6÷0.5=69.216.【解答】解:2.4×6.7≈16.1 3.5×0.5≈1.817.【解答】解:0.8×25=20×4.23=00.57+0.43=12.4×0.2=0.480.02×500=102.8×10=288.29×100=8292.5×0.4=1 4.87﹣1.7=3.1718.【解答】解:(1)0.64×12.5=8(2)2.8×0.17=0.47619.【解答】解:0.7××0.3=0.0425.5×10=552.6×0.5=1.3.20.【解答】解:(1)2.75×3.1=8.525(2)3.18×5.45=17.331(3)0.76×2.18≈1.66(得数保留两位小数)(4)0.09×1.7≈0.2(精确到十分位)21.【解答】解:0.36×0.15≈0.05 1.45×0.12=0.1740.86×1.4≈0.1 6.5×0.39=2.53522.【解答】解:8×0.12=0.96 1.9×3.5=6.65 2.3×1.29=2.9670.401×0.3=0.12030.45×0.96=0.4320.17×0.71≈0.1223.【解答】解:70×0.01=0.72.515×10=25.151.1×0.4=0.4410﹢0.3=10.36.5×0.2=1.30.1×0.01=0.0010.87﹣0.6=0.271.7×3=5.124.【解答】解:0.38×0.23≈0.1 5.79×3.6≈20.8 4.6×0.25≈1.225.【解答】解:3.6×0.25=0.99.8﹣1.64=8.16 3.1×300=93026.【解答】解:0.7×0.5=0.353.6×2=7.20.4×1.7=0.684.5×6=270.36+9=9.36 5.7+3=8.7 6.6×2=13.20.1×3.1=0.3127.【解答】解:0.3×1.1=0.33 5.79+2.31+4.21=12.310.25×4=1 1.2÷0.4=31.5×0.6=0.9 1.59÷0.3=5.30.5×101=50.56.5﹣5=1.510﹣8.88﹣0.12=10.64÷1.6×1.5=0.628.【解答】解:0.6×0.7=0.420.8×5=4 1.1×0.4=0.442.3×4×0=00.05×1.6=0.080.02×7=0.1429.【解答】解:0.32×0.8=0.256 1.36×4.8=6.52817.3×0.06=1.03830.【解答】解:1.45×0.12=0.174 3.08×0.28=0.862413.5×26.7=360.45 3.15×0.35≈1.131.【解答】解:9.37×0=07.3×100=730289+72﹣89=2721﹣0.04=0.964×8÷8×4=1632.【解答】解:30.5×0.76=23.180.54×0.19=0.102633.【解答】解:2.5×3=7.53.06×2=6.12 0.25×4=14.2×10=425.3×100=5302.5×6=152.2×4=8.8 1.6×4=6.4 1.25×8=1034.【解答】解:0.38×0.25=0.0950.12×15=1.88.5×0.39=3.3150.87×1.5≈1.3135.【解答】解:①14.53+5.67=20.2②7.2﹣6.45=0.75③1.05×2.8=2.94验算:④62.9÷1.7=37验算:36.【解答】解:0.5×2=10.25×4=112.5×8=1000.125×8=17÷0.7=101﹣0.125×8=01.25×32=800.25×56=1437.【解答】解:0.2×0.4=0.088.2+1.8=106.45×0.01=0.06452.5×0.4=10.8×50=40 2.4×5=120.9﹣0.52=0.2810.2×4.5=45.938.【解答】解:*4.23×0.028=0.1184436×0.56=20.1631.5×24.5=771.750.8×0.56=0.448*0.63×1.05=0.6615 1.8×3.67=6.60639.【解答】解:35.4×0.8=28.327.63×1.2=9.1560.08×1.14=0.0912 3.17×2.8≈8.88;0.3×5.6≈1.754.3×0.7≈440.【解答】解:24.6÷12=2.05 4.32÷1.2=3.621÷0.15=14041.【解答】解:0×7=0 2.6+0.4=315×0.01=0.1521.2﹣21=0.21.8a+0.2a=2a0.4×0.4=0.160.12×0.04=0.00480.8×100=802.5×4×0=00.72×0.8=0.57642.【解答】解:0.12×100=12 6.2×10=62500÷1000=0.512万+3万=15万8a+a=9a 6.2÷10=0.623.74×100=37423.6÷100=0.2363.25×10=32.543.【解答】解:(1)0.18×12=2.16(2)3.26×15=48.9 (3)3.1×17=52.7(4)1.25×4=5(5)14×0.5=7(6)8.4×15=126(7)0.45×9=4.05 (8)1.5×35=52.5(9)0.02×13=0.26 (10)4.28×16=68.48(11)2.61×18=46.9844.【解答】解:40×1.2=4825×0.4=1063=2167.8+0.9=8.70.56+4.44=52.4×0.5=1.21.25×80=1003.6÷0.06=6012÷0.4=3082=6445.【解答】解:①2.034×18=36.612②4.06×3.8≈15.4346.【解答】解:4×38.2=152.88×0.352=2.81635.6×5=178 6.7×3=20.147.【解答】解:9.5×0.2=1.93.2×0.5=1.60.8×2.5=24.4×0.4=1.7635×0.4=144.8×50=2404.8×0.25=1.28.8×5=441.4×0.5=0.712.5×4=5048.【解答】解:0.43×27=11.61; 1.85×2.6=4.81;0.37×2.4≈0.9(得数保留一位小数);7.02×0.56≈3.93(得数保留两位小数);49.【解答】解:0.7×0.9=0.63 2.6×0.5=1.30.14×0.3=0.0425.5×10=551.7×0.03=0.0511.8×0.04=0.0720.12×6=0.72 4.8×5=2450.【解答】解:5.6×1.8=10.08 0.25×0.046≈0.013500×0.96=3360第二部分参考答案与试题解析一.计算题(共50小题)1.【解答】解:1.8×0.36=0.64835.37+28.63=6419.9﹣8.75=11.15 1.06×0.48=0.508818.9+28.65=47.5522.87﹣18.65=4.222.【解答】解:(1)2.4×1.5=3.6(2)0.46×8.7≈4.0(3)2.24×1.8≈4.033.【解答】解:0.102×100=1024.2+3=7.20.23×0.5=0.1150.25×7×0.4=0.73.6÷0.6=642=160.1÷0.01=102×0.5+1=24.【解答】解:6.02×0.35≈2.118.74÷3.8=2.30.59÷1.4≈0.425.【解答】解:1.8×0.85=1.537.6﹣2.19=5.4150﹣18.75=31.256.【解答】解:4.8×0.25=1.29.3×1.3=12.099.8×0.5=4.9 2.1×2.15=4.5157.【解答】解:3.35×1.7≈5.70 5.63×3.9≈21.968.【解答】解:0.12×0.4=0.048 3.8÷100=0.03856.56÷0.56=101 1.6+3.04=4.6419.28﹣0.8=18.482.8÷0.7=40.53×1000=530108÷2.5÷4=10.89.【解答】解:3.48×1.05=3.654验算: 1.55÷3.8≈0.4110.【解答】解:0.64×18=11.5225.8×102=2631.640.7×0.25=10.17513.45×2.6≈35 4.865×8≈3910.23×42≈429.711.【解答】解:6.2×0.3=1.862.5×0.8=20.06×5=0.30.16×25=45×2.1=10.50×48.76=012.【解答】解:2.9×1.8=5.22 4.58×0.37=1.69460.8×2.5=2.0 5.45×1.72≈9.3713.【解答】解:84×0.25=210.55×64=35.20.47×5.8=2.726 6.06×0.32=1.93920.075×0.07=0.00525 3.7×9.77=36.14914.【解答】解:①3.4×0.25=0.85②6.5×2.4=15.6③0.035×0.6=0.021④1.25×0.024=0.0315.【解答】解:2.97×3.5=10.395 6.05×0.83=5.02150.78×4.5=3.51 3.36×3.67=12.331216.【解答】解:(1)36×5.5=198;(2)18×3.06=55.08;(3)3.45×21=72.45;(4)0.28×0.25=0.07;(5)150×0.12=18;(6)0.87×1.5=1.305;(7)0.4×0.076=0.0304;(8)1.5×0.062=0.093;(9)6.5×0.04=0.26.17.【解答】解:(1)4.57×1.8=8.226;(2)0.125×0.8=0.1;(3)3.75×0.24=0.9;(4)9.37×8.5=79.645;(5)2.07×3.6=7.452;(6)3.35×1.6=5.36.18.【解答】解:(1)0.94×5.3=4.982;(2)0.91×2.6=2.366;(3)4.06×0.75≈3.05;(4)8.43×1.5=12.645;(5)0.25×3.2=0.8;(6)7.8×0.9≈7.0.19.【解答】解:0.5×4.4=2.280÷1.6=50 5.5÷0.11=500.06×5=0.35×0.4×0.8=1.69.9+10.1=20 1.25×0.8=10.08÷0.1=0.84﹣0.15=3.85 1.7×5+0.3×5=1020.【解答】解:25.78+3.12=28.913.8×9=124.2*8﹣2.67=5.33验算:*5.73+6.7=12.43验算:21.【解答】解:0.125×100=12.560÷100=0.69÷10=0.90.32+4.68=515.7+4.3=2025×4=10010﹣0.8=9.27×99+7=70014.6+0.34=14.9430.5+2.5=3324﹣7.54﹣2.46=1426+19+74+81=20022.【解答】解:4.68×1.2=5.616 1.58×2.5=3.9523.【解答】解:2.4×6.7≈16.1 3.5×0.5≈1.824.【解答】解:(1)7.6×0.82=6.232;(2)3.25×0.31=1.0075;(3)7.5×0.59=4.425.25.【解答】解:3π=9.425π=15.75×3.14=15.70.5×7=3.592=8162﹣32=274π﹣1.5π=7.8534.6÷0.5=69.226.【解答】解:0.8×25=20×4.23=00.57+0.43=12.4×0.2=0.480.02×500=102.8×10=288.29×100=8292.5×0.4=1 4.87﹣1.7=3.1727.【解答】解:(1)0.64×12.5=8(2)2.8×0.17=0.47628.【解答】解:4.8×17=81.6 1.88×25=47 2.4×0.37=0.8880.89×5.3=4.71729.【解答】解:2.375×105≈249.38 5.16×4.3≈22.190.45×0.206≈0.0930.【解答】解:0.04×0.12=0.0048 4.25×8.8=37.4 3.84×0.25=0.95231.【解答】解:3.6×0.25=0.99.8﹣1.64=8.16 3.1×300=93032.【解答】解:(1)2.75×3.1=8.525(2)3.18×5.45=17.331(3)0.76×2.18≈1.66(得数保留两位小数)(4)0.09×1.7≈0.2(精确到十分位)33.【解答】解:0.36×0.15≈0.05 1.45×0.12=0.1740.86×1.4≈0.1 6.5×0.39=2.53534.【解答】解:8×0.12=0.96 1.9×3.5=6.65 2.3×1.29=2.9670.401×0.3=0.12030.45×0.96=0.4320.17×0.71≈0.1235.【解答】解:0.7××0.3=0.0425.5×10=552.6×0.5=1.3.36.【解答】解:30.5×0.76=23.180.54×0.19=0.102637.【解答】解: 1.35×270=368.56.4×8.05=51.5238.【解答】解:70×0.01=0.72.515×10=25.151.1×0.4=0.4410﹢0.3=10.36.5×0.2=1.30.1×0.01=0.0010.87﹣0.6=0.271.7×3=5.139.【解答】解:24.6÷12=2.05 4.32÷1.2=3.621÷0.15=14040.【解答】解:0×7=0 2.6+0.4=315×0.01=0.1521.2﹣21=0.21.8a+0.2a=2a0.4×0.4=0.160.12×0.04=0.00480.8×100=802.5×4×0=00.72×0.8=0.57641.【解答】解:0.38×0.23≈0.1 5.79×3.6≈20.8 4.6×0.25≈1.242.【解答】解:0.32×0.8=0.256 1.36×4.8=6.52817.3×0.06=1.03843.【解答】解:8.4×0.15=1.2616.51﹣6.3=10.21900﹣4.58=895.42*56.7+0.33=57.0344.【解答】解:0.7×0.5=0.353.6×2=7.20.4×1.7=0.684.5×6=270.36+9=9.36 5.7+3=8.7 6.6×2=13.20.1×3.1=0.3145.【解答】解:1.45×0.12=0.174 3.08×0.28=0.862413.5×26.7=360.45 3.15×0.35≈1.146.【解答】解:0.38×0.25=0.0950.12×15=1.88.5×0.39=3.3150.87×1.5≈1.3147.【解答】解:0.3×1.1=0.33 5.79+2.31+4.21=12.310.25×4=1 1.2÷0.4=31.5×0.6=0.9 1.59÷0.3=5.30.5×101=50.56.5﹣5=1.510﹣8.88﹣0.12=10.64÷1.6×1.5=0.648.【解答】解:0.38×0.25=0.095150×0.12=180.87×1.9=1.653 1.28×2.3=2.944 2.07×0.24=0.49680.17×1.05=0.178549.【解答】解:①8×0.12=0.96② 1.9× 3.5=6.65③0.401×0.3=0.1203④0.45×0.96=0.432⑤0.17×0.71=0.120750.【解答】解:0.13×0.2=0.0261﹣0.9=0.10.32÷2=0.160.8×5=40.9×0.1=0.09 3.11+2.22=5.330.52=0.258m﹣6m=2m1.62﹣0.62=1 5.9+4.4=10.30.053×100=5.312.5+12.5×7=100。
数学小数乘法练习题(多组)
小数乘法练习(一)一、口算。
1.2×3= 4.2×8= 1.7×9= 0.12×4=0.11×3= 1.5×4= 5.6×0= 2.4×3=1.25×3= 1.5×5= 8.5+2.5= 6.5×3=1.02×0.2= 0.45×0.6= 0.8×0.125= 0.759×0=0.25×0.4 = 0.067×0.1= 0.1×0.08= 0.85×0.4=二、在下面各式的积中点上小数点。
0 . 5 8 6 . 2 5 2 . 0 4× 4. 2 × 0 . 1 8 × 2 81 1 6 5 0 0 0 1 6 3 22 3 2 6 2 5 4 0 82 43 6 1 1 2 5 0 5 7 1 2三、判断,把不对的改正过来。
0.024 0.013× 0.14 × 0.02696 7824 260.036 0.000338四、根据1056×27=28512,写出下面各题的积。
105.6×2.7= 10.56×0.27= 0.1056×27= 1.056×0.27=五、先判断积里应该有几位小数,再竖式计算。
3.7×4.6= 0.82×0.06= 6.5×4.8=(验算)六、填一填。
把1.2的小数点去掉,它的值就扩大()倍;把0.019的小数点去掉,这个数就扩大()倍。
七、列式计算。
3.05的7.3倍是多少?八、判断。
(1)小数一定比整数大。
……………………………………………………()(2)两个因数的小数位数的和是3,积的小数位数也一定是3。
…………()小数乘法练习1、用简便方法计算下面各题,并说明运用了什么运算定律。
小数乘法练习题50道
小数乘法练习题50道小数乘法练习题50道小数乘法是数学中的一个重要概念,也是我们日常生活中经常用到的一种运算方法。
通过小数乘法,我们可以计算出两个小数的乘积,进而解决实际问题。
下面,我将给大家提供50道小数乘法练习题,希望能够帮助大家巩固这一知识点。
1. 0.5 × 0.2 = ?2. 0.3 × 0.4 = ?3. 0.8 × 0.6 = ?4. 0.7 × 0.9 = ?5. 0.25 × 0.1 = ?6. 0.15 × 0.05 = ?7. 0.35 × 0.2 = ?8. 0.6 × 0.3 = ?9. 0.45 × 0.1 = ?10. 0.75 × 0.2 = ?11. 0.05 × 0.01 = ?12. 0.25 × 0.02 = ?13. 0.35 × 0.03 = ?14. 0.45 × 0.04 = ?15. 0.55 × 0.05 = ?16. 0.65 × 0.06 = ?18. 0.85 × 0.08 = ?19. 0.95 × 0.09 = ?20. 0.15 × 0.1 = ?21. 0.2 × 0.3 = ?22. 0.4 × 0.5 = ?23. 0.6 × 0.7 = ?24. 0.8 × 0.9 = ?25. 0.1 × 0.01 = ?26. 0.2 × 0.02 = ?27. 0.3 × 0.03 = ?28. 0.4 × 0.04 = ?29. 0.5 × 0.05 = ?30. 0.6 × 0.06 = ?31. 0.7 × 0.07 = ?32. 0.8 × 0.08 = ?33. 0.9 × 0.09 = ?34. 0.01 × 0.01 = ?35. 0.02 × 0.02 = ?36. 0.03 × 0.03 = ?37. 0.04 × 0.04 = ?38. 0.05 × 0.05 = ?40. 0.07 × 0.07 = ?41. 0.08 × 0.08 = ?42. 0.09 × 0.09 = ?43. 0.01 × 0.1 = ?44. 0.02 × 0.2 = ?45. 0.03 × 0.3 = ?46. 0.04 × 0.4 = ?47. 0.05 × 0.5 = ?48. 0.06 × 0.6 = ?49. 0.07 × 0.7 = ?50. 0.08 × 0.8 = ?这些练习题涵盖了小数乘法的各种情况,从简单到复杂,逐渐增加难度。
100道小数乘法计算题
100道小数乘法计算题小数乘法是数学中的一个基础内容,通过进行小数乘法计算可以帮助孩子熟练掌握小数的运算方法和技巧。
本文将提供一百道小数乘法计算题,分为不同难度级别,供孩子练习和巩固知识。
一、难度级别一:整数与小数相乘1. 3 × 0.1 =2. 4 × 0.2 =3. 7 × 0.3 =4. 9 × 0.5 =5. 6 × 0.4 =6. 2 × 0.05 =7. 8 × 0.08 =8. 5 × 0.06 =9. 1 × 0.02 =10. 0 × 0.09 =二、难度级别二:小数与小数相乘1. 0.1 × 0.1 =2. 0.2 × 0.2 =3. 0.3 × 0.3 =5. 0.4 × 0.4 =6. 0.05 × 0.05 =7. 0.08 × 0.08 =8. 0.06 × 0.06 =9. 0.02 × 0.02 =10. 0.09 × 0.09 =三、难度级别三:整数与带小数的数相乘1. 3 × 0.7 =2. 4 × 0.3 =3. 7 × 0.6 =4. 9 × 0.4 =5. 6 × 0.2 =6. 2 × 0.09 =7. 8 × 0.08 =8. 5 × 0.07 =9. 1 × 0.06 =10. 0 × 0.05 =四、难度级别四:小数与带小数的数相乘2. 0.4 × 0.6 =3. 0.9 × 0.4 =4. 0.5 × 0.2 =5. 0.6 × 0.1 =6. 0.2 × 0.09 =7. 0.8 × 0.08 =8. 0.5 × 0.07 =9. 0.1 × 0.06 =10. 0.3 × 0.05 =五、难度级别五:多位小数相乘1. 0.34 × 0.12 =2. 0.37 × 0.08 =3. 0.56 × 0.23 =4. 0.48 × 0.17 =5. 0.72 × 0.29 =6. 0.83 × 0.61 =7. 0.95 × 0.43 =8. 0.24 × 0.67 =10. 0.75 × 0.92 =六、难度级别六:小数与整数相乘1. 0.34 × 15 =2. 0.37 × 28 =3. 0.56 × 42 =4. 0.48 × 57 =5. 0.72 × 63 =6. 0.83 × 99 =7. 0.95 × 74 =8. 0.24 × 86 =9. 0.63 × 65 =10. 0.75 × 53 =通过以上一百道小数乘法计算题的练习,相信孩子们可以加深对小数乘法的理解和掌握。
小数的乘法练习题
小数的乘法练习题一、小数乘法口算题:1. 0.7乘以0.2等于多少?2. 1.25乘以0.8等于多少?3. 0.45乘以3等于多少?4. 2.5乘以0.5等于多少?5. 0.3乘以1.2等于多少?二、小数乘法竖式计算题:1. 计算:0.56乘以3.22. 计算:1.8乘以0.753. 计算:2.45乘以1.64. 计算:0.15乘以4.75. 计算:3.8乘以0.9三、小数乘法应用题:1. 某商品原价为2.5元,打8折后的价格是多少?2. 一辆汽车的行驶速度为每小时45.6公里,它在3小时内行驶了多少公里?3. 一个长方形的长为3.2米,宽为2.5米,它的面积是多少?4. 一瓶果汁的容量为1.25升,如果每升果汁的价格为8.5元,那么这瓶果汁的价格是多少?5. 一个班级有45名学生,如果每个学生需要购买0.75元的文具,那么全班总共需要花费多少元?四、小数乘法混合运算题:1. 0.6乘以2.5加上1.2乘以0.4结果是多少?2. 3.6乘以0.5减去0.8乘以1.2结果是多少?3. 2.4乘以1.25加上0.7乘以3.2结果是多少?4. 1.8乘以0.75减去0.5乘以2.4结果是多少?5. 0.9乘以1.2加上1.5乘以0.6结果是多少?五、小数乘法估算题:1. 估算一下,0.78乘以2.1的结果是多少?2. 估算一下,1.35乘以0.9的结果是多少?3. 估算一下,2.8乘以0.5的结果是多少?4. 估算一下,0.4乘以3.6的结果是多少?5. 估算一下,3.2乘以0.8的结果是多少?六、小数乘法逆运算题:1. 如果0.4乘以一个数等于0.32,这个数是多少?2. 如果0.6乘以一个数等于0.48,这个数是多少?3. 如果0.5乘以一个数等于0.25,这个数是多少?4. 如果0.75乘以一个数等于0.375,这个数是多少?5. 如果1.2乘以一个数等于0.72,这个数是多少?七、小数乘法选择题:1. 下列哪个数乘以2.5等于10?A. 4B. 3C. 2D. 52. 0.75乘以一个数等于0.15,这个数是?A. 0.2B. 0.3C. 0.4D. 0.53. 2.4乘以一个数等于9.6,这个数是?A. 4B. 3C. 2D. 14. 0.8乘以一个数等于1.6,这个数是?A. 2B. 1.8C. 1.5D. 1.25. 3.6乘以一个数等于7.2,这个数是?A. 2B. 1.8C. 1.5D. 1.2注意:请在计算时仔细检查,确保小数点的位置正确。
小学数学小数乘法练习题
小学数学小数乘法练习题一、计算。
1. 将小数0.3乘以15.2. 将小数0.5乘以8.3. 将小数0.25乘以40.4. 将小数1.2乘以6.5. 将小数0.8乘以25.二、填空。
1. 把小数0.45乘以10,得到 _______.2. 把小数0.15乘以100,得到 _______.3. 把小数0.75乘以4,得到 _______.4. 把小数2.3乘以5,得到 _______.5. 把小数0.9乘以50,得到 _______.三、解决问题。
1. 一个公园里有2000棵树,其中有40%是橡树。
那么这个公园里有多少棵橡树?2. 一个草地上有800平方米,小明用剩下的80%的草地上种了鲜花。
那么他一共种了多少平方米的鲜花?3. 小华有7个苹果,他想把这些苹果平均分给他的4个朋友,每个人能得到多少个苹果?4. 小明把他的零花钱的一半买了一本书,又用剩下的钱的20%买了一支铅笔,他的零花钱一共是多少元?5. 小明的妈妈给了他100元,他用了其中的30%买了一个玩具,40%买了一个文具盒,剩下的钱还有多少元?四、综合应用。
小华去超市购买了一些水果。
他买了3千克的苹果,每千克7元;买了2千克的橙子,每千克5元;还买了1千克的葡萄,每千克10元。
请计算他一共花了多少钱?五、综合思考。
小明和小红是兄妹,他们分别拿到100元钱作为零花钱。
小明把他的钱的一半存入银行,小红用她的钱购买了一套玩具。
小红购买玩具后还剩下原来钱的三分之一。
请问小明剩下了多少钱?玩具的价格是多少?。