题目内容
0.23×102
4×1.76×0.25.
4×1.76×0.25.
(1)0.23×102
=0.23×(100+2),
=0.23×100+0.23×2,
=23+0.46,
=23.46;
(2)4×1.76×0.25
=4×0.25×1.76,
=1×1.76,
=1.76.
=0.23×(100+2),
=0.23×100+0.23×2,
=23+0.46,
=23.46;
(2)4×1.76×0.25
=4×0.25×1.76,
=1×1.76,
=1.76.
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