> 数学 >
简便计算.
①111111÷1111×3333=______
②6.25×0.16+2.64×0.0625+5.2×6.25=______
1
2
-
1
3
+
1
4
-
1
5
+
1
6
-
1
12
=______.
人气:374 ℃ 时间:2019-12-29 15:15:24
解答
①111111÷1111×3333,=111111×3333÷1111,=111111×(3333÷1111),=111111×3,=333333;②6.25×0.16+264×0.0625+5.2×6.25,=6.25×0.16+2.64×6.25+5.2×6.25,=6.25×(0.16+2.64+5.2),=6.25×8,=(6+...
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