用简便方法计算:
|
(1)179 +82+21+18 |
(2)32 ×12.5×0.25 |
|
(3)1765 -(50+765) |
(4)173 -85.7-14.3 |
|
(5)87 ×34+87×67-87 |
(6)25 ×92+25×12 |
简算.
|
(1)52 -11-32-7= |
(2)253 -(153-36)= |
用简便方法计算:
|
(1)179 +82+21+18 |
(2)32 ×12.5×0.25 |
|
(3)1765 -(50+765) |
(4)173 -85.7-14.3 |
|
(5)87 ×34+87×67-87 |
(6)25 ×92+25×12 |
简算.
|
(1)52 -11-32-7= |
(2)253 -(153-36)= |