Column operations and properties of addition
Answers are for parents and teachers.
1
Solve in columns: 47 + 25, 38 + 46, 59 + 27.
72, 84, 86
2
Solve in columns: 73 − 28, 91 − 45, 60 − 34.
45, 46, 26
3
The easy way: 17 + 26 + 3.
46
4
Calculate: (30 + 25) − 5.
50
5
Problem: A shop got 28 loaves in the morning and 17 at noon. 25 were sold by evening. How many loaves are left?
20