Download - 乘法交换律
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![Page 1: 乘法交换律](https://reader036.vdocuments.pub/reader036/viewer/2022082417/56812dd8550346895d9321f7/html5/thumbnails/1.jpg)
![Page 2: 乘法交换律](https://reader036.vdocuments.pub/reader036/viewer/2022082417/56812dd8550346895d9321f7/html5/thumbnails/2.jpg)
在括号内填上适当的数或符号
1. 11 × 50 = ( ) × 11
2. 30 × 200 = 200 × ( )
3. 60 × a = ( ) × ( )
= ( ) × ( ) ×
50
30
60a
4.
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判断:
1 , 54 ×72 = 72 × 54 ( )
2, 890 × 120 = 120 × 980 ( )
3, 160 ×38 = 38 + 160 ( )
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1, 16 × ( ) = 127 × 16
2, ( ) × 573 = ( ) × 101
3, ( ) × 702 = 702 × ( )
4, 48 ( ) 81 = 81 ( ) 48
在括号内填上适当的数或符号
127
101 573
1 1
× ×
![Page 5: 乘法交换律](https://reader036.vdocuments.pub/reader036/viewer/2022082417/56812dd8550346895d9321f7/html5/thumbnails/5.jpg)
每组中,各选一题,独立计算 。
206 × 341
341 × 206
333 × 297
297 × 333
352 × 143
143 × 352
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不计算,判断怎样才能算起来简便
5 × 87 700 × 542 180 × 635
140 × 251 17 × 234 109 × 606
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怎样简便就怎样算
44 × 213 302 × 512
310 × 2680 635 × 746
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1. 50 × 243 × 2
2. 25 × 125 × 8 × 4
你会算吗?