第88页

信息发布者：
7.2
0.2
1
1
1.7
1.2
0.8
5.7
7
=2.52
=1.62
=2.55
=7
≈0.20
​​$=1.5\dot {3}$​​
=(0.25×4)×7.87
=1×7.87
=7.87
=2.6×(10+0.2)
=2.6×10+2.6×0.2
=26+0.52
=26.52
=8.75×(101-1)
=8.75×100
=875
=(100+1)×0.45
=100×0.45+1×0.45
=45+0.45
=45.45
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