①÷×12
②1-÷0.9
③0.4×+×
④57×
⑤14×(-)×13
⑥÷(3--)
3.14×6=
×8= ÷0.5= ÷60%=
6.8×10%= 2- = 1.2+ = 36×75%=
= 32-23=
①25%×
②
③125% ×3.2 ×25%
④75 ×60%+24×+0.6
x
?
2.4
y
1.5
0.6