| 脱式计算. 175-75÷25 68+35×13 725-(125+237) (114+166)÷35 432÷(9×8)+189-60+40. |
| (1)175-75÷25, =175-3, =172; (2)68+35×13, =68+455, =523; (3)725-(125+237), =725-125-237, =600-237, =363; (4)(114+166)÷35, =280÷35, =8; (5)432÷(9×8)+189-60+40, =432÷72+189-60+40, =6+189-60+40, =195-60+40, =135+40, =175. |
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