5.3÷0.01=
80%:6=
0.75+99×0.75=
=
×75% =
12÷()=
8×0.5÷0.5×8=
5+4=
2+6=
8-5=
9-7=
10-9=
6-2=
9+0=
7-6=
7+3=
4-4=
8+2=
3+3=
6-3=
8-2=
1+3=
1+8=
4+3+2=
7-3+2=
5+3-2=
10-0-3=
2+5-4=
9-5-4=
8-1+2=
4+5+1=
×60= × = 0.36× = 15:20=
÷2= 6÷ = 0.56÷ = :0.75=
110% 40% 80%
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因为: ,
所以:。
也就有:。