问题
解答题
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答案
20×3=60, | 200-20=180, | 6×5+3=33, | 72+28=100, |
42÷7=6, | 24÷8=3, | 3×400=1200, | 200×7=1400, |
23+(12)=35, | (56)÷7=8, | 59-(17)=42, | 54÷(6)=9, |
4×28≈120, | 102×3≈300, | 46÷5≈9, | 61÷7≈9. |
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20×3=60, | 200-20=180, | 6×5+3=33, | 72+28=100, |
42÷7=6, | 24÷8=3, | 3×400=1200, | 200×7=1400, |
23+(12)=35, | (56)÷7=8, | 59-(17)=42, | 54÷(6)=9, |
4×28≈120, | 102×3≈300, | 46÷5≈9, | 61÷7≈9. |