加法
1+2=3 One and two are three.
2+3=5 Two plus three eguals five.
4+0=4 Four and nought is equal to four.
6+45+34=85 6,45 and 34 added together make 85.
减法
9-4=5 Nine minus four eguals five.
15-7=8 Seven from fifteen leaves eight.
乘法
1×0=0 One multiplied by nought equals ought.
1×1=1 Once one is one.
2×1=2 Twice one is two.
3×5=15 Three times five is fifteen.
除法
9÷3=3 Nine divided by three makes three.
20÷5=4 Five into twenty goes four times.