问题
解答题
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答案
70÷7=10, | 72-8=64, | 50÷5=10, | 49+35=84, | 21×4=84, | 3×13=39, |
63÷3=21, | 11×6=66, | 80-54=26, | 99÷9=11, | 1500-800=700, | 3700+300=4000, |
1400-600=800, | 7200-2000=5200, | 700+600=1300, | 8000-2000=6000, | 500+5000=5500, | 10000-9000=1000. |