问题
解答题
我口算快又准
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答案
3500÷7=500, | 50×6=300, | 25×4=100, | 40×5=200, | 7×5=35, | 30×8=240, |
300÷6=50, | 210÷7=30, | 150+5=155, | 80÷4=20, | 1600÷2=800, | 200×4÷8=100. |
我口算快又准
|
3500÷7=500, | 50×6=300, | 25×4=100, | 40×5=200, | 7×5=35, | 30×8=240, |
300÷6=50, | 210÷7=30, | 150+5=155, | 80÷4=20, | 1600÷2=800, | 200×4÷8=100. |