题目内容

【题目】怎样算简便就怎样算。

7.68+3.05-3.68 4.29-0.84-1.16 9.5-4.37+5.63

0.85+0.07+1.57 3.094-0.881-1.119 1.09+6.124+9.91

【答案】7.05 2.29 10.76 2.49 1.094 17.624

【解析】

7.68+3.05-3.68

=7.68-3.68+3.05

=4+3.05

=7.05

4.29-0.84-1.16

=4.29-(0.84+1.16)

=4.29-2

=2.29

9.5-4.37+5.63

=5.13+5.63

=10.76

0.85+0.07+1.57

=0.92+1.57

=2.49

3.094-0.881-1.119

=3.094-(0.881+1.119)

=3.094-2

=1.094

1.09+6.124+9.91

=1.09+9.91+6.124

=11+6.124

=17.624

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