问题
解答题
口算
|
答案
3500÷7=500, | 50×0×6=0, | 2800÷7×2=800, | 40×50=2000, | 0÷7×85=0, |
25×4+45=145, | 300÷6=50, | 210÷7×30=900, | 404÷4+9=110, | 80÷5=16, |
31×20+50=670, | 60-450÷5=-30, | 1600÷2=800, | 230×20=4600, | 300-40×7=20. |
口算
|
3500÷7=500, | 50×0×6=0, | 2800÷7×2=800, | 40×50=2000, | 0÷7×85=0, |
25×4+45=145, | 300÷6=50, | 210÷7×30=900, | 404÷4+9=110, | 80÷5=16, |
31×20+50=670, | 60-450÷5=-30, | 1600÷2=800, | 230×20=4600, | 300-40×7=20. |