第25页

信息发布者：

3.1
1.04
9
3.1
1.1
2.34
8.73
2.7
0.21
11
1.28
5.52
=4.56
=51.06
=54.34
=31.47
验算：
验算：
=3.7+6.3+5.27
=10+5.27
=15.27
=34.82-4.82+5.8
=30+5.8
=35.8
=15.38-5.38-7.4
=10-7.4
=2.6
=6.7+2.7
=9.4
(8+6)×8÷2-8×8÷2=24(dm²) 
10×12-(4+8)×2÷2=108(m²)
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