第15页

信息发布者:
13.79−(0.55+2.79)
=13.79−2.79−0.55
=11−0.55
=10.45
10.3+100.3+1000.3+10000.3
=(10+100+1000+10000)+(0.3+0.3+0.3+0.3)
=11110+1.2
=11111.2
12.53+8.78+3.47
=12.53+3.47+8.78
=16+8.78
=24.78
当腰围5.8厘米时,23.4-5.8-5.8-4.6=7.2(厘米)
7.2>4.6,此时下底7.2厘米
当腰围4.6厘米时,23.4-4.6-4.6-5.8=8.4(厘米)
8.4>5.8,此时下底8.4厘米