五数上小数加减乘除计算练习
五年级小数加减乘除混合运算计算题练习题
小数混合运算专项训练1、解方程。
(1)5x=450 (2)12(6-x)=42 (3)1.2×6+4x=12 (4)8.5x-x=22.52、用简便方法计算。
(1)0.25 ×3.2×12.5 (2)36×10.1(3)0.25×44 (4)22.2×4+17.8×43、用脱式计算。
(1)2.6+1.4×1.5-1.5 (2)(37-3.6÷4.8)÷12.5 (3)2.6+2.4×(1.4-1.05)(4)15.6÷16×(0.25+1.25)30.8÷[14-(9.85+1.07)] [60-(9.5+28.9)]÷0.182.881÷0.43-0.24×3.5 20×[(2.44-1.8)÷0.4+0.15] 28-(3.4+1.25×2.4) 2.55×7.1+2.45×7.1777×9+1111×3 0.8×[15.5-(3.21+5.79)](31.8+3.2×4) ÷ 5 31.5×4÷(6+3)0.64×25×7.8+2.2 2÷2.5+2.5÷236.25÷4.25×9.9 5180-705×624÷2.4-2.5×0.8 (4121+2389)÷7671×15-974 469×12+149219.4×6.1×2.3 5.67×0.2-0.6218.1×0.92+3.93 0.4×0.7×0.250.78+5.436+1 4. 8× 5÷4+1÷49. 9x5÷6+5÷6 10. 3÷4x8÷9-1÷3 14.31x5÷6-5÷6 16. 5÷9x18-14x2÷720.3x2÷9+1÷3 35. 95÷(64-45)36.178-145÷5×6+42 7.2÷0.8-1.2×56.5×(4.8-1.2×4) 28-(3.4+1.25×2.4)2.55×7.1+2.45×7.1 777×9+1111×3 (31.8+3.2×4)÷5 31.5×4÷(6+3) 0.64×25×7.8+2.2 2÷2.5+2.5÷2 194-64.8÷1.8×0.9 36.72÷4.25×9.9 5180-705×6 24÷2.4-2.5×0.8 (4121+2389)÷7 671×15-974469×12+1492 405×(3213-3189) 19.4×6.1×2.3 5.67×0.2-0.62 18.1×0.92+3.93 0.043×24+0.875 0.4×0.7×0.25 0.78+5.436+14.07×0.86+9.12 240×78÷(154-115) 1437×27+27×563 〔75-(12+18)〕÷15 2160÷〔(83-79)×18〕 280+840÷24×5325÷13×(266-250) 85×(95-1440÷24) 58870÷(105+20×2) 1437×27+27×56381432÷(13×52+78) [37.85-(7.85+6.4)] ×30 (947-599)+76×64 36×(913-276÷23)[192-(54+38)]×67 81432÷(13×52+78)(947-599)+76×64 60-(9.5+28.9)÷0.182.881÷0.43-0.24×3.5 0.8×〔15.5-(3.21+5.79)〕31.8 3.2×4)÷5 194-64.8÷1.8×0.9 36.72÷4.25×9.9 3.416÷(0.016×35)0.8×[(10-6.76)÷1.2] (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8 (58+37)÷(64-9×5)812-700÷(9+31×11) 156×[(17.7-7.2)÷3](3.2×1.5+2.5)÷1.6 85+14×(14+208÷26)120-36×4÷18+35 9.72×1.6-18.305÷73.2×(1.5+2.5)÷1.6 (58+37)÷(64-9×5)(6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 120-36×4÷18+3515-10.75×0.4-5.7 347+45×2-4160÷52(58+37)÷(64-9×5) [(7.1-5.6)×0.9-1.15] ÷2.5 (3.2×1.5+2.5)÷1.6 5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6 3.2×6+(1.5+2.5)÷1.6(3.2×1.5+2.5)÷1.6 120-144÷18+35347+45×2-4160÷52 (58+37)÷(64-9×5)95÷(64-45) 812-700÷(9+31×11)120-36×4÷18+35 (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8 0.8×〔15.5-(3.21+5.79)〕(31.8+3.2×4)÷5 31.5×4÷(6+3)0.64×25×7.8+2.2 2÷2.5+2.5÷2194-64.8÷1.8×0.9 36.72÷4.25×9.95180-705×6 24÷2.4-2.5×0.8(4121+2389)÷7 671×15-974469×12+1492 405×(3213-3189)0.8×[(10-6.76)÷1.2] 19.4×6.1×245.67×0.2-0.62 18.1×0.92+3.9324+0.875×99 0.4×0.7×0.250.75×102 100-56.2331.50+160÷40 (58+370)÷(64-45)32.120-144÷18+35 33.347+45×2-4160÷52 34(58+37)÷(64-9×5) 35.95÷(64-45)36.178-145÷5×6+42 420+580-64×21÷2837.812-700÷(9+31×11)(136+64)×(65-345÷23)38.85+14×(14+208÷26) 120-36×4÷18+35(58+37)÷(64-9×5) (6.8-6.8×0.55)÷8.50.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 3.2×(1.5+2.5)÷1.6 31.50+160÷40(58+370)÷(64-45) 32.120-144÷18+3533.347+45×2-4160÷52 34(58+37)÷(64-9×5)35.95÷(64-45) 36.178-145÷5×6+42420+580-64×21÷28 812-700÷(9+31×11)(136+64)×(65-345÷23)(284+16)×(512-8208÷18)120-36×4÷18+35 (58+37)÷(64-9×5)(6.8-6.8×0.55)÷8.5 0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6 (23.2×(1.5+2.5)÷1.645.6-1.6÷4 5.38+7.85-5.3746.7÷0.8-1.2×5 6-1.19×3-0.4347.6.5×(4.8-1.2×4) 0.68×1.9+0.32×1.9297×999 1983×21+21×3017(0.123+123) ×1009 34×24+34810.8×0.196+0.094 105+895×5732.47×23+27 39.01×18.3-90176.5+2-2×184 49+23×1431×99 52×99+52 25×32×125@所有人各位小朋友:给大家“敲黑板划重点啦”1.分数乘法四则运算:有括号先算括号里面的,再算括号外面的;没有括号先算乘除再算加减;2.分数乘法分配律:(1)看清有算式中有没有隐形的乘了一个1;(2)没有共同的因数时,我们看看能不能凑出共同的因数来;3.分数裂项:(1)分母的差是1是,直接将乘法变成减法;(2)分母的差不是1是,乘法变成减法后再乘差的倒数才可以。