2024年3月28日发(作者:今天武汉高考数学试卷)

破十法平十法练习题

破十法和平十法是数学中常用的计算方法,用于快速、准确地进行

乘法运算。本文将为大家提供一些破十法平十法的练习题,帮助大家

熟练掌握这两种计算方法。

练习题一:破十法

1. 34 × 12 = ?

2. 56 × 18 = ?

3. 47 × 16 = ?

4. 79 × 14 = ?

5. 63 × 27 = ?

练习题二:平十法

1. 43 × 20 = ?

2. 57 × 30 = ?

3. 36 × 40 = ?

4. 72 × 50 = ?

5. 28 × 60 = ?

练习题三:综合练习

1. 38 × 21 = ?

2. 59 × 15 = ?

3. 26 × 35 = ?

4. 68 × 47 = ?

5. 71 × 54 = ?

解答及步骤

练习题一:破十法

1. 34 × 12 = 340 + 40 + 8 = 392

2. 56 × 18 = 560 + 80 + 48 = 688

3. 47 × 16 = 470 + 80 + 112 = 662

4. 79 × 14 = 790 + 140 + 28 = 958

5. 63 × 27 = 630 + 270 + 126 = 1026

练习题二:平十法

1. 43 × 20 = 43 × 10 × 2 = 430 × 2 = 860

2. 57 × 30 = 57 × 10 × 3 = 570 × 3 = 1710

3. 36 × 40 = 36 × 10 × 4 = 360 × 4 = 1440

4. 72 × 50 = 72 × 10 × 5 = 720 × 5 = 3600

5. 28 × 60 = 28 × 10 × 6 = 280 × 6 = 1680

练习题三:综合练习

1. 38 × 21 = 38 × (20 + 1) = 38 × 20 + 38 × 1 = 760 + 38 = 798

2. 59 × 15 = 59 × (10 + 5) = 59 × 10 + 59 × 5 = 590 + 295 = 885


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