Let’s solve each problem step by step.
---
Problem 1:
Sequence: 1, 2, 3, __, 5, 6
We see the numbers go up by 1 each time. So after 3 comes
4.
The sentence says: “This is counting ___ in ___.”
Since we’re adding 1 each time, it’s counting
on in
ones.
✔ Already filled correctly in the image — but we confirm: missing number =
4
---
Problem 2:
Sequence: 10, __, 12, 13, 14, 15
After 10 should come
11, then 12, etc.
So missing number =
11
Counting on by 1 → so this is counting
on in
ones
---
Problem 3:
Sequence: 14, 15, 16, __, 18, 19
After 16 comes
17, then 18.
Missing number =
17
Again, increasing by 1 → counting
on in
ones
---
Problem 4:
Sequence: 5, 15, 25, 35, __, 55
Each number increases by 10:
5 + 10 = 15
15 + 10 = 25
25 + 10 = 35
35 + 10 =
45
45 + 10 = 55
✔
So missing number =
45
Sentence says: “This is counting ___ in ___.”
Already filled as “on” and “tens” — correct! Because we’re jumping by tens.
---
Problem 5:
Sequence: 10, 20, 30, __, 50, 60
Increasing by 10 each time:
10 → 20 → 30 →
40 → 50 → 60
Missing number =
40
So this is counting
on in
tens
---
Now let’s write all answers clearly:
Final Answer:
1. Missing number:
4 → This is counting
on in
ones
2. Missing number:
11 → This is counting
on in
ones
3. Missing number:
17 → This is counting
on in
ones
4. Missing number:
45 → This is counting
on in
tens
5. Missing number:
40 → This is counting
on in
tens
Parent Tip: Review the logic above to help your child master the concept of worksheet for class 2 maths.
