小學數學五年級上冊簡便計算68道題 含詳細答案

2022-11-28 09:24:07 字數 2953 閱讀 3273

3.29+0.73+2.27 3.29-0.73-2.27 7.5+2.5-7.5+2.5

7.325-3.29-3.3257.325-(5.325+1.7) 7.325-(5.325-1.7)

3.29+0.73-2.29+2.27 3.29×0.25×4 0.125×8.8

0.25×0.28 0.125×3.2×2.5 35×10.2 0.25×4÷0.25×4

3.5×9.93.5×99+3.5

3.5×101-3.5 3.5×9.9+3.5×0.1 3.5×2.7+35×0.73

3.5×2.7-3.5×0.7 (32+5.6)÷0.8 3.5÷0.6-0.5÷0.6

4.9÷1.4 7÷0.25÷4 7÷0.125

7.35÷(7.35×0.25) 7.35÷(7.35÷0.25)

3.07-0.38-1.62 1.29+3.7+2.71+6.3

8-2.45-1.55 3.25+1.79-0.59+1.75

23.4-0.8-13.4-7.2 0.32×403

3.2+0.36+4.8+1.64 1.23+3.4-0.23+6.6 0.25×36

12.7-(3.7+0.84) 36.54-1.76-4.54 0.25×0.73×4

7.6×0.8+0.2×7.6 0.85×199 0.25×8.5×4

1.28×8.6+0.72×8.6 12.5×0.96×0.8 10.4-9.6×0.35

0.8×(4.3×1.25) 3.12+3.12×99 28.6×101-28.6

(4.23+6.17)×0.8 0.86×15.7-0.86×14.7 2.4×102

14-7.32-2.68 2.64+8.67+7.36+11.332.31×1.2×0.5

(2.5-0.25)×0.49.16×1.5-0.5×9.16

3.6-3.6×0.54.5÷1.8 930÷0.6÷5

63.4÷2.5÷0.4 4.25÷2.5×9.9+0.17

3.9÷(1.3×57.7+1.54)÷0.7

2.5×2.4 2.7÷45

0.35×1.25×2×0.8 32.4×0.9+0.1×32.4

15÷0.2515÷(0.15×0.4)

小學數學五年級上冊簡便計算練習(答案卷)

一、歸類練習:

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 =3.29-30+5

=6.290.295

(加法結合律減法的性質同級運算交換)

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

=0.710.33.7

(減法交換減法的性質前面減號,脫括號變符號)

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+33.29×1 =1×1.1

=43.291.1

(同級運算交換乘法結合律先拆數,乘法結合律)

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 =1×135×10+35×0.2

=0.071350+7

(先拆數,乘法結合律) (拆數,乘法結合律357

拆數,乘法分配律)

0.25×4÷0.25×43.5×9.93.5×99+3.5

=(0.25÷0.25)×(4×4)=3.5×(10-0.1)=3.5×(99+1)

=1×163.5×10-3.5×0.13.5×100

=1635-0.35350

(同級運算交換34.65乘法分配律)

拆數,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

=3.5×1003.5×103.5×(2.7+7.3)

=350353.5×10

(乘法分配律乘法分配律35

先利用積不變的規律轉化,

然後再用乘法分配律)

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

=3.5×240+73÷0.6

=7475

(乘法分配律後2題類似分配律,但只適用於(a+b)÷c

和(a-b)÷c,而a÷(b+c)和a÷(b-c)不能用。)

4.9÷1.4 7÷0.25÷4 ★7÷0.125

=4.9÷(7×0.2)=7÷(0.25×4) =7×8

=4.9÷7÷0.27÷156

=0.7÷0.27乘除法轉化規律,轉化時

=3.5符號相反,轉化前後的2數

(拆數,除法的性質除法的性質相乘得1。)

7.35÷(7.35×0.257.35÷(7.35÷0.25)

=7.35÷7.35÷0.257.35÷7.35×0.25

=1÷0.251×0.25

=40.25

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