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小学数学五年级上册简便计算68道题(含答案)

小学数学五年级上册简便计算68道题(含答案)

小学数学五年级上册简便计算68道题(含详细答案)3.29+0.73+2.27 3.29-0.73-2.27 7.5+2.5-7.5+2.57.325-3.29-3.325 7.325-(5.325+1.7) 7.325-(5.325-1.7) 3.29+0.73-2.29+2.27 3.29×0.25×40.125×8.80.25×0.280.125×3.2×2.535×10.2 0.25×4÷0.2 5×43.5×9.9 3.5×99+3.53.5×101-3.5 3.5×9.9+3.5×0.1 3.5×2.7+35×0.733.5×2.7-3.5×0.7(32+5.6)÷0.8 3.5÷0.6-0.5÷0.64.9÷1.4 7÷0.25÷47÷0.1257.35÷(7.35×0.25)7.35÷(7.35÷0.25)3.07-0.38-1.62 1.29+3.7+2.71+6.38-2.45-1.55 3.25+1.79-0.59+1.7523.4-0.8-13.4-7.2 0.32×4033.2+0.36+4.8+ 1.64 1.23+ 3.4-0.23+6.6 0.25×3612.7-(3.7+0.84) 36.54-1.76-4.54 0.25×0.73×47.6×0.8+0.2×7.60.85×1990.25×8.5×41.28×8.6+0.72×8.612.5×0.96×0.8 10.4-9.6×0.350.8×(4.3×1.25) 3.12+3.12×9928.6×101-28.6(4.23+6.17)×0.80.86×15.7-0.86×14.7 2.4×10214-7.32-2.68 2.64+8.67+7.36+11.33 2.31×1.2×0.5(2.5-0.25)×0.4 9.16×1.5-0.5×9.163.6-3.6×0.54.5÷1.8 930÷0.6÷5 63.4÷2.5÷0.4 4.25÷2.5×9.9+0.173.9÷(1.3×5)(7.7+1.54)÷0.72.5×2.4 2.7÷450.35×1.25×2×0.8 32.4×0.9+0.1×32.415÷0.25 15÷(0.15×0.4)小学数学五年级上册简便计算练习(答案卷)一、归类练习:3.29+0.73+2.27 3.29-0.73-2.27 7.5+2.5-7.5+2.5=3.29+(0.73+2.27) =3.29-(0.73+2.27) =(7.5-7.5)+(2.5+2.5)=3.29+3 =3.29-3 =0+5=6.29 =0.29 =5(加法结合律)(减法的性质)(同级运算交换)7.325-3.29-3.325 7.325-(5.325+1.7) 7.325-(5.325-1.7)=7.325-3.325-3.29 =7.325-5.325-1.7 =7.325-5.325+1.7=4-3.29 =2-1.7 =2+1.7=0.71 =0.3 =3.7(减法交换)(减法的性质)(前面减号,脱括号变符号)3.29+0.73-2.29+2.27 3.29×0.25×4 0.125×8.8=(3.29-2.29)+(0.73+2.27) =3.29×(0.25×4) =0.125×8×1.1=1+3 =3.29×1 =1×1.1=4 =3.29 =1.1(同级运算交换)(乘法结合律)(先拆数,乘法结合律)0.25×0.28 0.125×3.2×2.5 35×10.2=0.25×4×0.07 =(0.125×8)×(0.4×2.5) =35×(10+0.2)=1×0.07 =1×1 =35×10+35×0.2=0.07 =1 =350+7(先拆数,乘法结合律)(拆数,乘法结合律) =357(拆数,乘法分配律)0.25×4÷0.25×4 3.5×9.9 3.5×99+3.5=(0.25÷0.25)×(4×4) =3.5×(10-0.1) =3.5×(99+1)=1×16 =3.5×10-3.5×0.1 =3.5×100=16 =35-0.35 =350(同级运算交换) =34.65 (乘法分配律)(拆数,乘法分配律)3.5×101-3.5 3.5×9.9+3.5×0.1 ★ 3.5×2.7+35×0.73=3.5×(101-1) =3.5×(9.9+0.1) =3.5×2.7+3.5×7.3=3.5×100 =3.5×10 =3.5×(2.7+7.3)=350 =35 =3.5×10(乘法分配律)(乘法分配律) =35(先利用积不变的规律转化,然后再用乘法分配律)3.5×2.7-3.5×0.7 ★ (32+5.6)÷0.8 ★ 3.5÷0.6-0.5÷0.6=3.5×(2.7-0.7) =32÷0.8+5.6÷0.8 =(3.5-0.5)÷0.6=3.5×2 =40+7 =3÷0.6=7 =47 =5(乘法分配律)(后2题类似分配律,但只适用于(a+b)÷c和(a-b)÷c,而a÷(b+c)和a÷(b-c)不能用。

小学数学五年级上册简便计算68道题含答案

小学数学五年级上册简便计算68道题含答案

小学数学五年级上册简便计算68道题〔含详细答案〕3.29+0.73+2.27 3.29-0.73-2.27 7.5+2.5-7.5+2.57.325-3.29-3.325 7.325-(5.325+1.7) 7.325-(5.325-1.7)3.29+0.73-2.29+2.27 3.29×0.25×4 0.125×8.80.25×0.280.125×3.2×2.535×10.2 0.25×4÷0.25×43.5×9.9 3.5×99+3.53.5×101-3.5 3.5×9.9+3.5×0.1 3.5×2.7+35×0.733.5×2.7-3.5×0.7(32+5.6)÷0.8 3.5÷0.6-0.5÷0.64.9÷1.4 7÷0.25÷47÷0.1257.35÷(7.35×0.25)7.35÷(7.35÷0.25)3.07-0.38-1.62 1.29+3.7+2.71+6.38-2.45-1.553.25+1.79-0.59+1.7523.4-0.8-13.4-7.2 0.32×4033.2+0.36+4.8+1.64 1.23+3.4-0.23+6.6 0.25×3612.7-〔3.7+0.84〕36.54-1.76-4.54 0.25×0.73×4 7.6×0.8+0.2×7.60.85×1990.25×8.5×41.28×8.6+0.72×8.612.5×0.96×0.8 10.4-9.6×0.350.8×〔4.3×1.25〕 3.12+3.12×9928.6×101-28.6〔4.23+6.17〕×0.80.86×15.7-0.86×14.7 2.4×10214-7.32-2.68 2.64+8.67+7.36+11.33 2.31×1.2×0.5 〔2.5-0.25〕×0.4 9.16×1.5-0.5×9.163.6-3.6×0.54.5÷1.8 930÷0.6÷563.4÷2.5÷0.4 4.25÷2.5×9.9+0.173.9÷〔1.3×5〕〔7.7+1.54〕÷0.72.5×2.4 2.7÷450.35×1.25×2×0.8 32.4×0.9+0.1×32.415÷0.25 15÷〔0.15×0.4〕小学数学五年级上册简便计算练习〔答案卷〕一、归类练习:3.29+0.73+2.27 3.29-0.73-2.27 7.5+2.5-7.5+2.5=3.29+〔0.73+2.27〕 =3.29-〔0.73+2.27〕=〔7.5-7.5〕+〔2.5+2.5〕=3.29+3 =3.29-3 =0+5=6.29 =0.29 =5〔加法结合律〕〔减法的性质〕〔同级运算交换〕7.325-3.29-3.325 7.325-(5.325+1.7) 7.325-(5.325-1.7)=7.325-3.325-3.29 =7.325-5.325-1.7 =7.325-5.325+1.7=4-3.29 =2-1.7 =2+1.7=0.71 =0.3 =3.7〔减法交换〕〔减法的性质〕〔前面减号,脱括号变符号〕3.29+0.73-2.29+2.27 3.29×0.25×4 0.125×8.8=〔3.29-2.29〕+〔0.73+2.27〕=3.29×〔0.25×4〕 =0.125×8×1.1=1+3 =3.29×1 =1×1.1=4 =3.29 =1.1〔同级运算交换〕〔乘法结合律〕〔先拆数,乘法结合律〕0.25×0.28 0.125×3.2×2.5 35×10.2=0.25×4×0.07 =〔0.125×8〕×〔0.4×2.5〕 =35×〔10+0.2〕=1×0.07 =1×1 =35×10+35×0.2=0.07 =1 =350+7〔先拆数,乘法结合律〕〔拆数,乘法结合律〕=357〔拆数,乘法分配律〕0.25×4÷0.25×4 3.5×9.9 3.5×99+3.5=〔0.25÷0.25〕×〔4×4〕 =3.5×〔10-0.1〕 =3.5×〔99+1〕=1×16 =3.5×10-3.5×0.1 =3.5×100=16 =35-0.35 =350〔同级运算交换〕=34.65 〔乘法分配律〕〔拆数,乘法分配律〕3.5×101-3.5 3.5×9.9+3.5×0.1 ★3.5×2.7+35×0.73=3.5×〔101-1〕=3.5×〔9.9+0.1〕 =3.5×2.7+3.5×7.3=3.5×100 =3.5×10 =3.5×〔2.7+7.3〕=350 =35 =3.5×10〔乘法分配律〕〔乘法分配律〕=35〔先利用积不变的规律转化,然后再用乘法分配律〕3.5×2.7-3.5×0.7 ★(32+5.6)÷0.8 ★3.5÷0.6-0.5÷0.6=3.5×〔2.7-0.7〕=32÷0.8+5.6÷0.8 =(3.5-0.5)÷0.6=3.5×2 =40+7 =3÷0.6=7 =47 =5〔乘法分配律〕〔后2题类似分配律,但只适用于〔a+b〕÷c和(a-b)÷c,而a÷(b+c)和a÷(b-c)不能用。

简便运算练习题及答案150道

简便运算练习题及答案150道

简便运算练习题及答案150道3.72×3.5+6.28×3.536.8-3.9-6.1.48-4.8×7.8+78×0.5232+4.9-0.94.8×100.14.02+5.4+0.983.68+7.56-2.683.82+2.9+0.18+9.15.27+2.86-0.66+1.633.6×10.8-4.8×0.556.5×9.9+56..17-1.8-3.27.85+2.34-0.85+4.669.6+4.8-3.613.35-4.68+2.656.4×0.25+3.6÷ ×8.09×10.8-0.8×7.013.75-5.6-1.8-15.6-7.2.14-0.53-2.47.8-7.45+8.80.398+0.36+3.615.75+3.59-0.59+14.242.5-4.2÷3.520÷1.25÷818.76×9.9+18.763.52÷2.5÷0.40.49÷1.43.65×10.15.6÷3.50.89×100.15.83×2+4.274.36×12.5×84.78÷0.2+ 3.441.25×2.5×323.6-3.6×0..6÷0.8÷0. 146.5-÷8÷0.1215.6×13.1-15.6-15.6×2.1.9- 4.1+6.1- 5.9.6-0.6× 15.2÷0.25÷4.2×99+4.217.8÷9.7×99+9. 0.65×10127.5×3.7-7.5×3..54÷2.5÷0.4.83×4.56+3.83×5.4452.8÷0.75×0.25×÷23327+9664÷32×25727+9660÷30×2586-45×81÷27运算定律练习题乘法交换律:a×b=b×a 乘法结合律:×c=a×38×25×2×125×25×17× ×49×4×8×125×8× ×4×289×2×125×乘法交换律和结合律的变化练习125×6125×84×125×225×28加法交换律:a+b=b+a 加法结合律:+c=a+357+288+14158+395+10167+289+3129+235+171+165378+527+73169+78+22+39+42+61138+293+62+107乘法分配律:×c=a×c+b×c 正用练习×2×2×25× 15×乘法分配律正用的变化练习:36×25×4139×101125×88201×24乘法分配律反用的练习:34×72+34×28×37+65×3785×82+85×1825×97+25×6×25+25×24乘法分配律反用的变化练习:38×29+38×299+7564×199+645×68+68+68×64☆思考题:其他的一些简便运算。

小学数学简便运算试卷

小学数学简便运算试卷

小学数学简便运算试卷一、选择题(每题2分,共20分)1. 计算下列哪个选项的结果最接近100?A. 45 + 56B. 39 + 62C. 58 + 43D. 47 + 542. 下列哪个选项是正确的简便运算?A. 33 × 2 = 66B. 4 × 25 = 100C. 7 × 11 = 77D. 5 × 20 = 1003. 以下哪个选项表示的是正确的乘法分配律?A. (2 + 3) × 4 = 2 × 4 + 3 × 4B. 2 × (3 + 4) = 2 × 3 + 4C. 3 × (4 + 5) ≠ 3 × 4 + 3 × 5D. 5 × (2 + 3) = 5 × 2 + 5 × 34. 计算下列哪个选项的结果最大?A. 23 × 4B. 34 × 3C. 45 × 2D. 56 × 15. 以下哪个选项是正确的简便运算?A. 12 + 12 + 12 = 36B. 12 × 3 = 36C. 12 + 3 = 15D. 12 - 3 = 9二、填空题(每题2分,共20分)6. 用简便方法计算:_______ × 8 = 88。

7. 用简便方法计算:_______ ÷ 4 = 9。

8. 用简便方法计算:_______ + 15 = 45。

9. 用简便方法计算:_______ - 6 = 24。

10. 用乘法分配律计算:(7 + 8) × 3 = 7 × 3 + _______。

三、计算题(每题5分,共30分)11. 计算下列各题,并使用简便方法:(1) 47 + 53(2) 84 - 27(3) 25 × 4(4) 125 ÷ 512. 计算下列各题,并使用简便方法:(1) 3 × 36(2) 77 - 55(3) 49 ÷ 7(4) 8 × 25四、应用题(每题10分,共30分)13. 小明有36个苹果,他想平均分给6个朋友,每个朋友能分到几个苹果?如果小明决定再买一些苹果,使得每个朋友能分到10个苹果,他需要再买多少个苹果?14. 一个班级有48名学生,如果每4名学生组成一个小组,那么可以组成多少个小组?如果每个小组需要5本练习册,那么总共需要多少本练习册?15. 一个长方形的长是15米,宽是10米。

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