问题
解答题
混合运算(能简便的一定要简便)
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答案
(1)4.58+3.38+6.62,
=4.58+(3.38+6.62),
=4.58+10,
=14.58;
(2)0.25×0.125×4×8,
=(0.25×4)×(0.125×8),
=1×1,
=1;
(3)4.2×0.75+0.75×5.8,
=0.75×(4.2+5.8),
=0.75×10,
=7.5;
(4)6.38÷0.25÷4,
=6.38÷(0.25×4),
=6.38÷1,
=6.38.