问题
计算题
计算下面各题,能用简便方法的用简便方法。
|
答案
(1)原式=780÷60 | |
=13 | (2)原式= 47×(101-1) |
= 4700 | |
(3)原式= 40×7-123 | |
=280-123 | |
=157 | (4)原式=(128+72)+(164+36) |
= 200+200 | |
= 400 | |
(5)原式=16÷8 | |
=2 | (6)原式=65×42+65×100-65×42 |
=6500 |
计算下面各题,能用简便方法的用简便方法。
|
(1)原式=780÷60 | |
=13 | (2)原式= 47×(101-1) |
= 4700 | |
(3)原式= 40×7-123 | |
=280-123 | |
=157 | (4)原式=(128+72)+(164+36) |
= 200+200 | |
= 400 | |
(5)原式=16÷8 | |
=2 | (6)原式=65×42+65×100-65×42 |
=6500 |