问题
解答题
估算过程:49≈______. |
答案
322×24=7728
120×40=4800
105×60=6300
49≈50,104≈100,
49×104≈50×100=5000.
故答案为:50,100,5000,50.
估算过程:49≈______. |
322×24=7728
120×40=4800
105×60=6300
49≈50,104≈100,
49×104≈50×100=5000.
故答案为:50,100,5000,50.