问题 解答题

简便计算看我的.

3.95×7.6+3.95×3.4-3.95

2.44×1.25×8

3.25+0.4+0.6+1.75

56.8-2.74-5.26.

答案

(1)3.95×7.6+3.95×3.4-3.95

=3.95×(7.6+3.4-1)

=3.95×10

=39.5

(2)2.44×1.25×8

=2.44×(1.25×8)

=2.44×10

=24.4

(3)3.25+0.4+0.6+1.75

=3.25+1.75+0.4+0.6

=(3.25+1.75)+(0.4+0.6)

=5+1

=6

(4)56.8-2.74-5.26

=56.8-(2.74+5.26)

=56.8-8

=48.8

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