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脱式计算(能简算的要简便).(10×54-180)÷36(168-18)×(32+18)75+360÷20-52300-165-35569+68+132+31125×243200÷25÷456×32-46×3256×28+28×43+28.
题目详情
脱式计算(能简算的要简便).
(10×54-180)÷36 | (168-18)×(32+18) | 75+360÷20-5 |
2300-165-355 | 69+68+132+31 | 125×24 |
3200÷25÷4 | 56×32-46×32 | 56×28+28×43+28. |
▼优质解答
答案和解析
(1)(10×54-180)÷36
=(540-180)÷36
=360÷36
=10
(2)(168-18)×(32+18)
=150×50
=7500
(3)75+360÷20-5
=75+18-5
=88
(4)2300-165-355
=2300-(165+355)
=2300-520
=1780
(5)69+68+132+31
=(69+31)+(68+132)
=100+200
=300
(6)125×24
=125×8×3
=1000×3
=3000
(7)3200÷25÷4
=3200÷(25×4)
=3200÷100
=32
(8)56×32-46×32
=(56-46)×32
=10×32
=320
(9)56×28+28×43+28
=(56+43+1)×28
=100×28
=2800
=(540-180)÷36
=360÷36
=10
(2)(168-18)×(32+18)
=150×50
=7500
(3)75+360÷20-5
=75+18-5
=88
(4)2300-165-355
=2300-(165+355)
=2300-520
=1780
(5)69+68+132+31
=(69+31)+(68+132)
=100+200
=300
(6)125×24
=125×8×3
=1000×3
=3000
(7)3200÷25÷4
=3200÷(25×4)
=3200÷100
=32
(8)56×32-46×32
=(56-46)×32
=10×32
=320
(9)56×28+28×43+28
=(56+43+1)×28
=100×28
=2800
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