题目内容
根据44×21=924,直接写出下面几个算式的积.
4.4×2.1=
0.44×0.21=
0.924=
92.4=
4.4×2.1=
9.24
9.24
0.44×0.21=
0.0924
0.0924
0.924=
0.44
0.44
×2.1
2.1
92.4=
4.4
4.4
×21
21
.分析:在乘法算式中积的小数位数是因数中小数位数的和,据此解答.
解答:解:4.4×2.1=9.24,
0.44×0.21=0.0924,
0.924=0.44×2.1,
92.4=4.4×21,
故答案为:9.24,0.0924,0.44,2.1,4.4,21.
0.44×0.21=0.0924,
0.924=0.44×2.1,
92.4=4.4×21,
故答案为:9.24,0.0924,0.44,2.1,4.4,21.
点评:该题主要考查乘法算式中积的变化规律.
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