18.32-5.47-4.32 13.4-(3.4+5.2) 17.29-5.28-6.29 3.68+7.56-2.68.

问题描述:

18.32-5.47-4.32
13.4-(3.4+5.2)
17.29-5.28-6.29
3.68+7.56-2.68.

(1)18.32-5.47-4.32=18.32-4.32-5.47=14-5.47=8.53(2)13.4-(3.4+5.2)=13.4-3.4-5.2=10-5.2=4.8(3)17.29-5.28-6.29=17.29-6.29-5.28=11-5.28=5.72(4)3.68+7.56-2.68=3.68-2.68+7.56=1+7.56=8.56