Let's solve each number pattern step by step. These are all
counting patterns, mostly increasing by
1 or following a simple sequence.
---
1.
`8 9 10 __ 12 13 __ 15`
- The numbers go up by 1.
- Missing numbers:
- After 10 →
11
- After 13 →
14
✔ Answer: `8, 9, 10, 11, 12, 13, 14, 15`
---
2.
`12 13 __ 15 16 __ 18 __`
- Increasing by 1.
- Missing:
- After 13 →
14
- After 16 →
17
- After 18 →
19
✔ Answer: `12, 13, 14, 15, 16, 17, 18, 19`
---
3.
`10 __ 12 13 __ 15 16 __`
- Counting up by 1.
- Missing:
- After 10 →
11
- After 13 →
14
- After 16 →
17
✔ Answer: `10, 11, 12, 13, 14, 15, 16, 17`
---
4.
`13 14 15 __ 17 18 __ 20`
- Increasing by 1.
- Missing:
- After 15 →
16
- After 18 →
19
✔ Answer: `13, 14, 15, 16, 17, 18, 19, 20`
---
5.
`__ 11 12 __ 14 15 __ 17`
- Counting by 1s.
- Missing:
- Before 11 →
10
- After 12 →
13
- After 15 →
16
✔ Answer: `10, 11, 12, 13, 14, 15, 16, 17`
---
6.
Ornament pattern:
`9 __ __ 12 __ __`
- Numbers increase by 1.
- From 9 to 12 is 3 steps: 9 → 10 → 11 → 12
- So the missing numbers:
- After 9 →
10
- After 10 →
11
- After 12 →
13
- After 13 →
14
✔ Answer: `9, 10, 11, 12, 13, 14`
---
7.
Ornament pattern:
`__ 16 __ __ __ 20`
- We know 16 and 20 are given.
- Counting up by 1: 16 → 17 → 18 → 19 → 20
- So:
- Before 16 →
15
- Then: 16, 17, 18, 19, 20
✔ Answer: `15, 16, 17, 18, 19, 20`
---
✔ Final Answers:
1. `8, 9, 10,
11, 12, 13,
14, 15`
2. `12, 13,
14, 15, 16,
17, 18,
19`
3. `10,
11, 12, 13,
14, 15, 16,
17`
4. `13, 14, 15,
16, 17, 18,
19, 20`
5. `
10, 11, 12,
13, 14, 15,
16, 17`
6. `9,
10,
11, 12,
13,
14`
7. `
15, 16,
17,
18,
19, 20`
---
🎉 Explanation:
All these patterns follow
sequential counting by 1 (adding 1 each time). To find missing numbers, just count forward or backward from the known numbers.
This helps build number sense and understanding of number order — essential for Grade 1 math!
Parent Tip: Review the logic above to help your child master the concept of mathematics number patterns worksheet.
