13.5+2.5= 7.3×2= 7-2.7= 5÷12= 21.7÷7=
185×0.1= 1.25×8= 3+21.8×0= =
= = = =
= = =
2-1.2= 1.25×80= 6.6÷0.33= 2.5×2= 240×30=
1- = + = - = + = + =
+ = + = 1- - = -( - )=
99×7.2= 45×10.1= ÷ = + ﹣ = 1.25×3.2×2.5=
28.9÷1.25÷0.8= 56.5×9.9+5.65= (2.5﹣0.25)×0.4=
78.2﹣8.2×1.3= 4.5÷1.5÷1.5=