5.6+2.3=
12﹣1.9=
-=
1.4÷0.2=
0.7×0.5=
4.18÷10=
0.25×4=
÷=
×=
1.25×0.8=
2.7×0.8×0=
80×4.5×125% 40×(1+25%) 36÷18%×
= 1.8:5.4=x:2.4 x:8=: