问题
解答题
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答案
73-44=29, | 835-800=35, | 720÷4=180, | 45×2=90, |
2098÷7≈300, | 403×8=3224, | 643÷80≈8, | 203×32≈6000, |
19×22≈400, | 95÷19=5, | 25×7=175, | 225÷25=9. |
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73-44=29, | 835-800=35, | 720÷4=180, | 45×2=90, |
2098÷7≈300, | 403×8=3224, | 643÷80≈8, | 203×32≈6000, |
19×22≈400, | 95÷19=5, | 25×7=175, | 225÷25=9. |