题目内容
| 口算. 400×5= | 7×30= | 28÷7= | 40÷5= | 53+7= | |||||||||||||
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| ①400×5=2000, | ②7×30=210, | ③28÷7=4, | ④40÷5=8, | ⑤53+7=60, |
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题目内容
| 口算. 400×5= | 7×30= | 28÷7= | 40÷5= | 53+7= | |||||||||||||
1-
|
|
|
|
| ①400×5=2000, | ②7×30=210, | ③28÷7=4, | ④40÷5=8, | ⑤53+7=60, |
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