问题 解答题

计算下面各题:(能简算的要简算)

6.7+25+3.3+75

103×12

14.85-(4.85+2.5)

15×99+15

9.14-1.43-4.57

2000÷125÷8.

答案

(1)6.7+25+3.3+75

=(6.7+3.3)+(25+75),

=10+100,

=110;

(2)103×12

=(100+3)×12,

=100×12+3×12,

=1200+36,

=1236;

(3)14.85-(4.85+2.5)

=14.85-4.85-2.5,

=10-2.5,

=7.5;

(4)15×99+15

=(99+1)×15,

=100×15,

=1500;

(5)9.14-1.43-4.57

=9.14-(1.43+4.57),

=9.14-6,

=3.14;

(6)2000÷125÷8

=2000÷(125×8),

=2000÷1000,

=2.

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