(45+15)÷3, (44+48)÷4, (81-27)÷9, (45-20)÷5, (78-46)÷2, (96-48)÷3
(45+15)÷3= 60÷3=20
(45+15)÷3= 45÷3+15÷3= 15+5=20
(44+48)÷4=92÷4=23
(44+48)÷4=44÷4+48÷4=11+12=23
(81-27)÷9=54÷9=6
(81-27)÷9=81÷9-27÷9=9-3=6
(45-20)÷5=25÷5=5
(45-20)÷5=45÷5-20÷5=9-4=5
(78-46)÷2=32÷2=16
(78-46)÷2=78÷2-46÷2= 39-23=16
(96-48)÷3=48÷3=16
(96-48)÷3=96÷3-48÷3=32-16=16
