3.2×100= 10-5.5= 1.7+5= 0.84÷2=
×8= ÷ = × = + =
10-1.01=
0.9÷90%=
20×25%=
3.14×9=
5.9+3.1= 3-1.8= 2.7÷3= 3.5×3=
+ = 3- = × = 5÷ =
12÷5%=
25%÷=
10%+1%=
1﹣25%﹣60%=
15.1-3.5+6.5= 8× ÷8× = 4203÷59≈ 0.42-0.32=
18××= 4÷-÷4= 3.6÷2×5= +0.2=