题目内容
列式计算.
(1)16.2除以0.25与45的积,商是多少?
(2)2.5与0.4的积,除以2.5与0.4的积,商是多少?
(1)16.2除以0.25与45的积,商是多少?
(2)2.5与0.4的积,除以2.5与0.4的积,商是多少?
分析:(1)先算0.25与45的积,再用16.2除以所得的积即可;
(2)先算2.5与0.4的积,2.5与0.4的积,然后再相除即可.
(2)先算2.5与0.4的积,2.5与0.4的积,然后再相除即可.
解答:解:
(1)16.2÷(0.25×45),
=16.2÷11.25,
=1.44.
答:商是1.44.
(2)(2.5×0.4)÷(2.5×0.4),
=1÷1,
=1.
答:商是1.
(1)16.2÷(0.25×45),
=16.2÷11.25,
=1.44.
答:商是1.44.
(2)(2.5×0.4)÷(2.5×0.4),
=1÷1,
=1.
答:商是1.
点评:根据题意,先弄清运算顺序,然后再列式解答.
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