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脱式计算(能简算的要简算).35×(320-170)÷5025×33×4(36×54-984)÷24150÷[90÷(67-52)]61×9913×56+56×87.
题目详情
脱式计算(能简算的要简算). 35×(320-170)÷50 | 25×33×4 | (36×54-984)÷24 |
150÷[90÷(67-52)] | 61×99 | 13×56+56×87. |
▼优质解答
答案和解析
(1)35×(320-170)÷50
=35×(150÷50)
=35×3
=105;
(2)25×33×4
=25×4×33
=100×33
=3300;
(3)(36×54-984)÷24
=(1944-984)÷24
=960÷24
=40;
(4)150÷[90÷(67-52)]
=150÷[90÷15]
=150÷6
=25;
(5)61×99
=61×(100-1)
=61×100-61
=6100-61
=6039;
(6)13×56+56×87
=(13+87)×56
=100×56
=5600.
=35×(150÷50)
=35×3
=105;
(2)25×33×4
=25×4×33
=100×33
=3300;
(3)(36×54-984)÷24
=(1944-984)÷24
=960÷24
=40;
(4)150÷[90÷(67-52)]
=150÷[90÷15]
=150÷6
=25;
(5)61×99
=61×(100-1)
=61×100-61
=6100-61
=6039;
(6)13×56+56×87
=(13+87)×56
=100×56
=5600.
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