用简便方法算一算。
|
| (1)原式=(4×4)×125 = 4×(4×125) = 400 | (2)原式= 48×(100-1) = 4800-48 = 4752 |
| (3)原式= 47×(100+1) = 4700+47 = 4747 | (4)原式=(58+42)×17 =100×17 =1700 |
| (5)原式=(4×6)×25×5 =600×5 =3000 | (6)原式=367×(1+19) =367×20 =7340 |
编辑:chaxungu时间:2026-04-27 13:19:20分类:小学数学题库
用简便方法算一算。
|
| (1)原式=(4×4)×125 = 4×(4×125) = 400 | (2)原式= 48×(100-1) = 4800-48 = 4752 |
| (3)原式= 47×(100+1) = 4700+47 = 4747 | (4)原式=(58+42)×17 =100×17 =1700 |
| (5)原式=(4×6)×25×5 =600×5 =3000 | (6)原式=367×(1+19) =367×20 =7340 |