问题 解答题

前三题得数保留两位小数:

0.76×1.12≈

1.78×0.24≈

0.56×1.07≈

2.4+7.6×4.3

8.2×0.94×0.5

0.48×8.5-2.5.

答案

0.76×1.12≈0.85;

1.78×0.24≈0.43;

0.56×1.07≈0.60;

2.4+7.6×4.3

=2.4+32.68

=35.08;

8.2×0.94×0.5

=7.708×0.5

=3.854;

0.48×8.5-2.5

=4.08-2.5

=1.58.

单项选择题
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