97.3-24.3-65.7+32.7的简便运算?
4个回答
展开全部
(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.
2022-06-15
展开全部
(97.3+32.7)-(24.3+65.7)=
130-90=40。
130-90=40。
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展开全部
原式=97.3-(24.3+65.7)+32.7
=97.3+32.7-90
=130-90
=40
=97.3+32.7-90
=130-90
=40
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(97.3+32.7)-(24.3+65.7)
=130-90
=40
=130-90
=40
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