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Number sequence worksheet for identifying patterns in math.

A worksheet titled "Number Sequence" with several sequences of numbers and blank lines for students to identify the pattern and fill in the missing numbers.

A worksheet titled "Number Sequence" with several sequences of numbers and blank lines for students to identify the pattern and fill in the missing numbers.

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Show Answer Key & Explanations Step-by-step solution for: Number sequence online worksheet for 3rd grade
Let's solve each number sequence step by step and identify the pattern.

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1. 2, 4, 6, 8, _____, _____

- Pattern: Each number increases by 2.
- So:
8 + 2 = 10,
10 + 2 = 12
- Answer: 10, 12
- The pattern is: Adding 2 to the previous number (or counting by 2s)

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2. 3, 6, 9, 12, _____, _____

- Pattern: Each number increases by 3.
- So:
12 + 3 = 15,
15 + 3 = 18
- Answer: 15, 18
- The pattern is: Adding 3 to the previous number (or multiples of 3)

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3. 115, 120, 125, 130, _____, _____

- Pattern: Each number increases by 5.
- So:
130 + 5 = 135,
135 + 5 = 140
- Answer: 135, 140
- The pattern is: Adding 5 to the previous number

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4. 1050, 1060, 1070, _____, _____

- Pattern: Each number increases by 10.
- So:
1070 + 10 = 1080,
1080 + 10 = 1090
- Answer: 1080, 1090
- The pattern is: Adding 10 to the previous number

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5. 10, 9, 8, 7, _____, _____, _____

- Pattern: Each number decreases by 1.
- So:
7 - 1 = 6,
6 - 1 = 5,
5 - 1 = 4
- Answer: 6, 5, 4
- The pattern is: Subtracting 1 from the previous number (counting down by 1)

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6. 2075, 2050, 2025, _____, _____

- Pattern: Each number decreases by 25.
- So:
2025 - 25 = 2000,
2000 - 25 = 1975
- Answer: 2000, 1975
- The pattern is: Subtracting 25 from the previous number

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7. 850, 841, 832, _____, _____, _____

- Let's check the difference:
- 850 - 841 = 9
- 841 - 832 = 9
- So, the pattern is subtracting 9 each time.
- Continue:
- 832 - 9 = 823
- 823 - 9 = 814
- 814 - 9 = 805
- Answer: 823, 814, 805
- The pattern is: Subtracting 9 from the previous number

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Final Answers:



1. 2, 4, 6, 8, 10, 12
→ The pattern is: Adding 2

2. 3, 6, 9, 12, 15, 18
→ The pattern is: Adding 3

3. 115, 120, 125, 130, 135, 140
→ The pattern is: Adding 5

4. 1050, 1060, 1070, 1080, 1090
→ The pattern is: Adding 10

5. 10, 9, 8, 7, 6, 5, 4
→ The pattern is: Subtracting 1

6. 2075, 2050, 2025, 2000, 1975
→ The pattern is: Subtracting 25

7. 850, 841, 832, 823, 814, 805
→ The pattern is: Subtracting 9

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