23×40= 120÷6= 12×50= 510÷5=
+ = 1- = - = + =
840÷4= 825÷5= 913÷3=
40×5= 427÷7= 0× 200= 408÷ 4=
16×5= 100-27= 65÷5= 2000+300=
21×20= 300÷6= 14×20= 560÷4=
1- = + = - = - =
600÷3= 0÷6= 840÷4=
60×50= 2.5+1.8= 20×23=
4.8+2.5= 30×70= 21×30=
+= 5.9-3.6= 960÷3=
29+81= 16÷4×4= 420-20×5=