Problem: Adding Two-Digit Numbers
The task involves solving a series of addition problems involving two-digit numbers. The instruction specifies that you should add the numbers starting from the
ones column first and then move to the
tens column. If there is a carry-over, it should be accounted for.
Let's solve each problem step by step.
---
####
First Row:
1.
42 + 46
- Add the ones: \( 2 + 6 = 8 \)
- Add the tens: \( 4 + 4 = 8 \)
- Result: \( 88 \)
2.
51 + 27
- Add the ones: \( 1 + 7 = 8 \)
- Add the tens: \( 5 + 2 = 7 \)
- Result: \( 78 \)
3.
53 + 14
- Add the ones: \( 3 + 4 = 7 \)
- Add the tens: \( 5 + 1 = 6 \)
- Result: \( 67 \)
4.
32 + 26
- Add the ones: \( 2 + 6 = 8 \)
- Add the tens: \( 3 + 2 = 5 \)
- Result: \( 58 \)
---
####
Second Row:
5.
70 + 13
- Add the ones: \( 0 + 3 = 3 \)
- Add the tens: \( 7 + 1 = 8 \)
- Result: \( 83 \)
6.
23 + 15
- Add the ones: \( 3 + 5 = 8 \)
- Add the tens: \( 2 + 1 = 3 \)
- Result: \( 38 \)
7.
64 + 21
- Add the ones: \( 4 + 1 = 5 \)
- Add the tens: \( 6 + 2 = 8 \)
- Result: \( 85 \)
8.
50 + 40
- Add the ones: \( 0 + 0 = 0 \)
- Add the tens: \( 5 + 4 = 9 \)
- Result: \( 90 \)
---
####
Third Row:
9.
58 + 40
- Add the ones: \( 8 + 0 = 8 \)
- Add the tens: \( 5 + 4 = 9 \)
- Result: \( 98 \)
10.
63 + 23
- Add the ones: \( 3 + 3 = 6 \)
- Add the tens: \( 6 + 2 = 8 \)
- Result: \( 86 \)
11.
95 + 4
- Add the ones: \( 5 + 4 = 9 \)
- Add the tens: \( 9 + 0 = 9 \)
- Result: \( 99 \)
12.
29 + 50
- Add the ones: \( 9 + 0 = 9 \)
- Add the tens: \( 2 + 5 = 7 \)
- Result: \( 79 \)
---
Final Answers:
1. \( 42 + 46 = 88 \)
2. \( 51 + 27 = 78 \)
3. \( 53 + 14 = 67 \)
4. \( 32 + 26 = 58 \)
5. \( 70 + 13 = 83 \)
6. \( 23 + 15 = 38 \)
7. \( 64 + 21 = 85 \)
8. \( 50 + 40 = 90 \)
9. \( 58 + 40 = 98 \)
10. \( 63 + 23 = 86 \)
11. \( 95 + 4 = 99 \)
12. \( 29 + 50 = 79 \)
Boxed Final Answer:
\[
\boxed{88, 78, 67, 58, 83, 38, 85, 90, 98, 86, 99, 79}
\]
Parent Tip: Review the logic above to help your child master the concept of 2 digit addition without regrouping worksheet.
