48+39= 1600-900= 56÷7×5= 16+40÷8=
250-70= 800+2300= 4×9÷6= 63-42÷7=
12÷4 = 45÷5= 4×7=
64÷8= 72÷9= 3×3×3=
50-8×5= 5×5÷5=
3,6,9,15,24,,63,