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递等式计算(能简则简)87.23-11.9-4.113.72+6.84+1.28+9.1673.35+28.77-63.35+32.23138.69-(57+38.69)74000÷(37×125)1.96×77-1.96+1.96×24
题目详情
递等式计算(能简则简) 87.23-11.9-4.1 | 13.72+6.84+1.28+9.16 |
73.35+28.77-63.35+32.23 | 138.69-(57+38.69) |
74000÷(37×125) | 1.96×77-1.96+1.96×24 |
▼优质解答
答案和解析
(1)87.23-11.9-4.1
=87.23-(11.9+4.1)
=87.23-16
=71.23;
(2)13.72+6.84+1.28+9.16
=(13.72+1.28)+(6.84+9.16)
=15+16
=31;
(3)73.35+28.77-63.35+32.23
=(73.35-63.35)+(28.77+32.23)
=10+61
=71;
(4)138.69-(57+38.69)
=138.69-38.69-57
=100-57
=43;
(5)74000÷(37×125)
=74000÷37÷125
=2000÷125
=(2000×8)÷(125×8)
=16000÷1000
=16;
(6)1.96×77-1.96+1.96×24
=1.96×(77-1+24)
=1.96×100
=196.
=87.23-(11.9+4.1)
=87.23-16
=71.23;
(2)13.72+6.84+1.28+9.16
=(13.72+1.28)+(6.84+9.16)
=15+16
=31;
(3)73.35+28.77-63.35+32.23
=(73.35-63.35)+(28.77+32.23)
=10+61
=71;
(4)138.69-(57+38.69)
=138.69-38.69-57
=100-57
=43;
(5)74000÷(37×125)
=74000÷37÷125
=2000÷125
=(2000×8)÷(125×8)
=16000÷1000
=16;
(6)1.96×77-1.96+1.96×24
=1.96×(77-1+24)
=1.96×100
=196.
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