问题
解答题
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答案
35×2=70, | 50×90=4500, | 28×3=84, | 210÷30=7, |
3000÷60=50, | 720+90=810, | 640÷8=80, | 78÷6=13, |
4×230=920, | 11×60=660, | 580-490=90, | 143÷70≈2, |
240÷77≈3, | 290÷39≈7. |
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35×2=70, | 50×90=4500, | 28×3=84, | 210÷30=7, |
3000÷60=50, | 720+90=810, | 640÷8=80, | 78÷6=13, |
4×230=920, | 11×60=660, | 580-490=90, | 143÷70≈2, |
240÷77≈3, | 290÷39≈7. |