①6.91+19.2÷2.56
②12.5×8.8
③9.2÷0.25÷4
0.3×0.3=
10×0.07 =
3.25×0.2=
4.55 ×4=
0.43+3.57 =
0.7 ÷0.01 =
0.96÷3=
3.06÷2=
1.5x=6.6
2x+6=21
①7.8-3.5+2.2-6.5
②600÷[(160-76)÷7]
③70×4+90×4
④840÷35
⑤382×101-382
⑥12-1.56-0.44