Let’s solve each problem step by step. We’re adding two numbers that are both multiples of 10 (like 80, 60, 30, etc.). That means we can just add the tens digits and then put a zero at the end.
For example:
80 + 80 → 8 + 8 = 16 → so 160
80 + 60 → 8 + 6 = 14 → so 140
Let’s go one by one:
1) 80 + 80 = 160
2) 80 + 60 = 140
3) 80 + 20 = 100
4) 30 + 70 = 100
5) 70 + 60 = 130
6) 50 + 60 = 110
7) 50 + 60 = 110
8) 40 + 50 = 90
9) 80 + 70 = 150
10) 30 + 40 = 70
11) 10 + 80 = 90
12) 40 + 60 = 100
13) 70 + 10 = 80
14) 70 + 60 = 130
15) 20 + 80 = 100
16) 20 + 50 = 70
17) 80 + 10 = 90
18) 20 + 40 = 60
19) 20 + 30 = 50
20) 30 + 20 = 50
I double-checked each addition — all are correct!
Final Answer:
1) 160
2) 140
3) 100
4) 100
5) 130
6) 110
7) 110
8) 90
9) 150
10) 70
11) 90
12) 100
13) 80
14) 130
15) 100
16) 70
17) 90
18) 60
19) 50
20) 50
Parent Tip: Review the logic above to help your child master the concept of year 2 worksheet printable.
