题目内容
脱式计算
3.25×4.7-7.8
0.57+0.43×0.24.
3.25×4.7-7.8
0.57+0.43×0.24.
(1)3.25×4.7-7.8,
=15.275-7.8,
=7.475;
(2)0.57+0.43×0.24,
=0.57+0.1032,
=0.6732.
=15.275-7.8,
=7.475;
(2)0.57+0.43×0.24,
=0.57+0.1032,
=0.6732.
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