简便计算 1.0.125X8.8 2.10.1X8.3 3.(2.5+25)X4 4.3.57X3.7+3.57X7.3
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 03:08:38
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简便计算 1.0.125X8.8 2.10.1X8.3 3.(2.5+25)X4 4.3.57X3.7+3.57X7.3
简便计算 1.0.125X8.8 2.10.1X8.3 3.(2.5+25)X4 4.3.57X3.7+3.57X7.3
简便计算 1.0.125X8.8 2.10.1X8.3 3.(2.5+25)X4 4.3.57X3.7+3.57X7.3
1 0.125X8.8
=0.125X(8+0.8)
=0.125x8+0.125x0.8
=1+0.1
=1.1
2.10.1X8.3
=(10+1)x8.3
=10x8.3+1x8.3
=83+8.3
= 91.3
3 (2.5+25)X4
=2.5x4+25x4
=10+100=110
3.57X3.7+3.57X7
=3.57x(3+7)
=3.57x10
=35.7
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