题目内容
在先算的一步下面画横线,再计算.
4.5×[8.1÷(2×0.45)]
[13-(2.15+4.85)]÷1.2.
4.5×[8.1÷(2×0.45)]
[13-(2.15+4.85)]÷1.2.
(1)4.5×[8.1÷(2×0.45)],
=4.5×[8.1÷0.9],
=4.5×9,
=40.5;
(2)[13-(2.15+4.85)]÷1.2,
=[13-7]÷1.2,
=6÷1.2,
=5.
=4.5×[8.1÷0.9],
=4.5×9,
=40.5;
(2)[13-(2.15+4.85)]÷1.2,
=[13-7]÷1.2,
=6÷1.2,
=5.
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