题目内容

【题目】脱式计算,能简便的要简算。

0.4+9.6÷3.2 12.1-2.1+8.3 12.5×0.96×0.8

8.98×99+8.98 12.5-7.6+2.5-2.4 [14.4-4.8+3] ÷0.4

【答案】3.41.79.6

898516.5

【解析】

0.4+9.6÷3.2

=0.4+3

=3.4

12.1-2.1+8.3

=12.1-2.1-8.3

=10-8.3

=1.7

12.5×0.96×0.8

=12.5×0.8×0.96

=10×0.96

=9.6

8.98×99+8.98

=8.98×99+8.98×1

=99+1)×8.98

=100×8.98

=898

12.5-7.6+2.5-2.4

=12.5+2.5-7.6-2.4

=15-7.6+2.4

=15-10

=5

[14.4-4.8+3] ÷0.4

=[14.4-7.8] ÷0.4

=6.6÷0.4

=16.5

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