遞等式計算能簡則簡

2021-03-04 09:00:58 字數 540 閱讀 3623

1樓:吉田亞理

(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×版125)

=74000÷37÷125

=2000÷125

=(2000×8)÷權(125×8)

=16000÷1000

=16;

(6)1.96×77-1.96+1.96×24=1.96×(77-1+24)

=1.96×100

=196.

用遞等式計算,能簡算的要簡算

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68x07505用遞等式計算能簡算的要簡算

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