题目内容

【题目】计算下面各题.(怎么算简便就怎么算)

3264÷32+34×5 1.05×3.80.8÷6.3 8512.847.2

20×1 ×0.75+ × [1﹣( + ]×12

【答案】272;②0.5;③25

7;⑤;⑥2

【解析】

3264÷32+34×5

=102+170

=272

1.05×3.80.8÷6.3

=1.05×3÷6.3

=3.15÷6.3

=0.5

8512.847.2

=85﹣(12.8+47.2

=8560

=25

20×1

=20×120× 20×

=2085

=7

×0.75+ ×

= × +×

= × +

= ×1

=

[1﹣( + ]×12

=[1﹣( ]×12

=[1 ]×12

= ×12

=2

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