Grade 1 Number Patterns Worksheet - Complete the sequences by writing the correct numbers.

Let’s solve each pattern one by one.

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Pattern 1:
5, 6, __, 8, 9, __, 11, __

This is counting up by 1.
- After 6 → 7
- After 9 → 10
- After 11 → 12

So: 5, 6, 7, 8, 9, 10, 11, 12

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Pattern 2:
3, 6, __, __, 15, 18, 21, __

This is counting up by 3.
- 3 + 3 = 6
- 6 + 3 = 9
- 9 + 3 = 12
- 12 + 3 = 15 ✔️
- 15 + 3 = 18 ✔️
- 18 + 3 = 21 ✔️
- 21 + 3 = 24

So: 3, 6, 9, 12, 15, 18, 21, 24

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Pattern 3:
__, 10, 15, __, 25, __, 35, __

This is counting up by 5.
- Before 10 → 10 - 5 = 5
- 10 + 5 = 15 ✔️
- 15 + 5 = 20
- 20 + 5 = 25 ✔️
- 25 + 5 = 30
- 30 + 5 = 35 ✔️
- 35 + 5 = 40

So: 5, 10, 15, 20, 25, 30, 35, 40

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Pattern 4:
__, __, 6, 8, __, 12, __, 16

This is even numbers starting from 2? Let’s check:
- 6, 8, then next should be 10, then 12, then 14, then 16.
So before 6: 4, then 2.

Check: 2, 4, 6, 8, 10, 12, 14, 16

Yes! Counting up by 2.

So: 2, 4, 6, 8, 10, 12, 14, 16

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Pattern 5:
37, __, __, 40, __, 42, 43, __

Looks like counting up by 1, but let’s check gaps.

From 37 to 40 → that’s +3 over 3 steps → so +1 each step.

So:
- 37 + 1 = 38
- 38 + 1 = 39
- 39 + 1 = 40 ✔️
- 40 + 1 = 41
- 41 + 1 = 42 ✔️
- 42 + 1 = 43 ✔️
- 43 + 1 = 44

So: 37, 38, 39, 40, 41, 42, 43, 44

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Pattern 6:
__, 26, 25, __, __, 22, 21, __

This is going DOWN by 1.

- Before 26 → 26 + 1 = 27
- 26 - 1 = 25 ✔️
- 25 - 1 = 24
- 24 - 1 = 23
- 23 - 1 = 22 ✔️
- 22 - 1 = 21 ✔️
- 21 - 1 = 20

So: 27, 26, 25, 24, 23, 22, 21, 20

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Pattern 7:
10, 12, __, __, 18, __, 22, __

This is counting up by 2.

- 10 + 2 = 12 ✔️
- 12 + 2 = 14
- 14 + 2 = 16
- 16 + 2 = 18 ✔️
- 18 + 2 = 20
- 20 + 2 = 22 ✔️
- 22 + 2 = 24

So: 10, 12, 14, 16, 18, 20, 22, 24

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Pattern 8:
49, __, 47, __, 45, __, 43, __

This is going DOWN by 2.

- 49 - 2 = 47 → wait, 47 is already there, so first blank is between 49 and 47 → must be 48? Wait no — if it’s decreasing by 2, then:

Actually, look: 49, __, 47 → so 49 to 47 is -2, so the middle number should be 48? But that would be -1 then -1. That doesn’t fit.

Wait — maybe it’s decreasing by 2 each time, skipping one?

Let’s list positions:

Position 1: 49
Position 2: ?
Position 3: 47
Position 4: ?
Position 5: 45
Position 6: ?
Position 7: 43
Position 8: ?

If we assume it’s decreasing by 2 every *other* step? No — better idea: maybe it’s decreasing by 2 each step, but written with blanks in between.

Try: 49, 48, 47, 46, 45, 44, 43, 42

That’s decreasing by 1 each time.

But 49 to 47 is two steps down by 1 → yes, fits.

Check:
49 → 48 → 47 → 46 → 45 → 44 → 43 → 42

Perfect.

So: 49, 48, 47, 46, 45, 44, 43, 42

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Final Answers for all patterns:

1. 7, 10, 12
2. 9, 12, 24
3. 5, 20, 30, 40
4. 2, 4, 10, 14
5. 38, 39, 41, 44
6. 27, 24, 23, 20
7. 14, 16, 20, 24
8. 48, 46, 44, 42

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Final Answer:
1. 7, 10, 12
2. 9, 12, 24
3. 5, 20, 30, 40
4. 2, 4, 10, 14
5. 38, 39, 41, 44
6. 27, 24, 23, 20
7. 14, 16, 20, 24
8. 48, 46, 44, 42