问题
解答题
|
答案
50×60=3000, | 84÷7=12, | 180÷3=60, |
300×3=900, | 2800÷4=700, | 43×20=860, |
2.8+6.2=9, | 9.8-0.9=8.9, | 38÷5≈8, |
723÷8≈90, | 48×39≈2000, | 31×77≈2400. |
|
50×60=3000, | 84÷7=12, | 180÷3=60, |
300×3=900, | 2800÷4=700, | 43×20=860, |
2.8+6.2=9, | 9.8-0.9=8.9, | 38÷5≈8, |
723÷8≈90, | 48×39≈2000, | 31×77≈2400. |