题目内容
【题目】2.5×1.9×4=××1.9 32×10.1=32×(+)=×+× .
【答案】2.5;4;10;0.1;32;10;32;0.1
【解析】解:2.5×1.9×4, =(2.5×4)×1.9,
=10×1.9,
=19;
32×10.1,
=32×(10+0.1),
=32×10+32×0.1,
=320+3.2,
=323.2;
所以答案是:2.5,4;10,0.1,32,10,32,0.1.
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题目内容
【题目】2.5×1.9×4=××1.9 32×10.1=32×(+)=×+× .
【答案】2.5;4;10;0.1;32;10;32;0.1
【解析】解:2.5×1.9×4, =(2.5×4)×1.9,
=10×1.9,
=19;
32×10.1,
=32×(10+0.1),
=32×10+32×0.1,
=320+3.2,
=323.2;
所以答案是:2.5,4;10,0.1,32,10,32,0.1.