问题 解答题
直接写出得数.
0.75+0.4=20+0.78=4.8+4.2=5.7-3=
4.9-1.9=1.34+0.8=2-0.75=8.7+0.03=
0.2-0.09=8.5+2.5=1.6+0.4=4.5+2.5=
1-0.45=100+0.9=0.17+0.3=0.82-0.22=
答案

0.75+0.4=1.15,20+0.78=20.78,4.8+4.2=9,5.7-3=2.7,
4.9-1.9=3,1.34+0.8=2.14,2-0.75=1.25,8.7+0.03=8.73,
0.2-0.09=0.11,8.5+2.5=11,1.6+0.4=2,4.5+2.5=7,
1-0.45=0.55,100+0.9=100.9,0.17+0.3=0.47,0.82-0.22=0.6,

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