Let’s solve each addition problem one by one, carefully adding the numbers in each column.
We’ll go row by row, left to right:
---
First Row:
1.
46 + 43
6 + 3 = 9
40 + 40 = 80
→ 80 + 9 =
89
2.
37 + 52
7 + 2 = 9
30 + 50 = 80
→ 80 + 9 =
89
3.
52 + 26
2 + 6 = 8
50 + 20 = 70
→ 70 + 8 =
78
4.
72 + 13
2 + 3 = 5
70 + 10 = 80
→ 80 + 5 =
85
---
Second Row:
5.
56 + 23
6 + 3 = 9
50 + 20 = 70
→ 70 + 9 =
79
6.
18 + 71
8 + 1 = 9
10 + 70 = 80
→ 80 + 9 =
89
7.
35 + 64
5 + 4 = 9
30 + 60 = 90
→ 90 + 9 =
99
8.
51 + 31
1 + 1 = 2
50 + 30 = 80
→ 80 + 2 =
82
---
Third Row:
9.
69 + 30
9 + 0 = 9
60 + 30 = 90
→ 90 + 9 =
99
10.
50 + 36
0 + 6 = 6
50 + 30 = 80
→ 80 + 6 =
86
11.
68 + 21
8 + 1 = 9
60 + 20 = 80
→ 80 + 9 =
89
12.
27 + 62
7 + 2 = 9
20 + 60 = 80
→ 80 + 9 =
89
---
Fourth Row:
13.
75 + 23
5 + 3 = 8
70 + 20 = 90
→ 90 + 8 =
98
14.
34 + 34
4 + 4 = 8
30 + 30 = 60
→ 60 + 8 =
68
15.
74 + 25
4 + 5 = 9
70 + 20 = 90
→ 90 + 9 =
99
16.
85 + 13
5 + 3 = 8
80 + 10 = 90
→ 90 + 8 =
98
---
All calculations checked and verified.
Final Answer:
89, 89, 78, 85, 79, 89, 99, 82, 99, 86, 89, 89, 98, 68, 99, 98
Parent Tip: Review the logic above to help your child master the concept of double digit addition worksheet without regrouping.
