Let's solve each of these multiplication problems step by step. These are
2-digit by 1-digit multiplication problems, and the layout is a visual representation of the standard multiplication algorithm.
We'll go through each one:
---
1) 79 × 9
Break it down:
- Multiply 9 × 9 = 81 → write down 1, carry over 8
- Multiply 9 × 7 = 63, add the carried 8 → 63 + 8 = 71
So:
```
7 9
× 9
-----
7 1 1
```
✔ Answer: 711
---
2) 24 × 7
- 7 × 4 = 28 → write 8, carry 2
- 7 × 2 = 14, plus 2 = 16
```
2 4
× 7
-----
1 6 8
```
✔ Answer: 168
---
3) 16 × 6
- 6 × 6 = 36 → write 6, carry 3
- 6 × 1 = 6, plus 3 = 9
```
1 6
× 6
-----
9 6
```
✔ Answer: 96
---
4) 64 × 8
- 8 × 4 = 32 → write 2, carry 3
- 8 × 6 = 48, plus 3 = 51
```
6 4
× 8
-----
5 1 2
```
✔ Answer: 512
---
5) 73 × 9
- 9 × 3 = 27 → write 7, carry 2
- 9 × 7 = 63, plus 2 = 65
```
7 3
× 9
-----
6 5 7
```
✔ Answer: 657
---
6) 77 × 9
- 9 × 7 = 63 → write 3, carry 6
- 9 × 7 = 63, plus 6 = 69
```
7 7
× 9
-----
6 9 3
```
✔ Answer: 693
---
✔ Final Answers:
1) 711
2) 168
3) 96
4) 512
5) 657
6) 693
You can fill in the grids accordingly by placing the digits in the correct boxes (partial products and sum). Let me know if you'd like a visual grid filled out!
Parent Tip: Review the logic above to help your child master the concept of 2 by 1 multiplication worksheet.
