问题
解答题
|
答案
300×70=21000, | 50×40=2000, | 2.8+3.2=6, | 91-54=37, |
52×39≈2000, | 79×60≈4800, | 32×78≈2400, | 91×23≈1800, |
120÷3=40, | 5600÷8=700, | 8000÷5=1600, | 360÷9=40, |
51÷5≈10, | 431÷6≈70, | 185÷3≈60, | 362÷9≈40. |
|
300×70=21000, | 50×40=2000, | 2.8+3.2=6, | 91-54=37, |
52×39≈2000, | 79×60≈4800, | 32×78≈2400, | 91×23≈1800, |
120÷3=40, | 5600÷8=700, | 8000÷5=1600, | 360÷9=40, |
51÷5≈10, | 431÷6≈70, | 185÷3≈60, | 362÷9≈40. |