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Math Grade K-1 Answer Key

Math: Number Patterns

Finding and completing simple patterns

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Math: Number Patterns

Finding and completing simple patterns

Math - Grade K-1

Instructions: Read each problem carefully. Complete each number pattern and show how you know the rule when asked.
  1. 1

    Fill in the missing numbers: 1, 2, 3, __, __

    Say the counting numbers in order.

    The missing numbers are 4 and 5. This pattern counts up by 1 each time.
  2. 2

    Fill in the missing numbers: 5, 6, __, 8, __

    The missing numbers are 7 and 9. This pattern counts up by 1 each time.
  3. 3

    Fill in the missing numbers: 10, 9, 8, __, __

    Try counting backward.

    The missing numbers are 7 and 6. This pattern counts down by 1 each time.
  4. 4

    Fill in the missing numbers: 2, 4, 6, __, __

    The missing numbers are 8 and 10. This pattern adds 2 each time.
  5. 5

    Fill in the missing numbers: 1, 3, 5, __, __

    Count by 2s starting at 1.

    The missing numbers are 7 and 9. This pattern adds 2 each time.
  6. 6

    Fill in the missing numbers: 0, 1, 0, 1, __, __

    The missing numbers are 0 and 1. This pattern repeats 0, 1 over and over.
  7. 7

    Fill in the missing numbers: 3, 1, 3, 1, __, __

    Look for the numbers that repeat.

    The missing numbers are 3 and 1. This pattern repeats 3, 1 over and over.
  8. 8

    What comes next in the pattern: 7, 8, 9, __

    The next number is 10. This pattern counts up by 1.
  9. 9

    What comes next in the pattern: 4, 3, 2, __

    Count backward one step at a time.

    The next number is 1. This pattern counts down by 1.
  10. 10

    What comes next in the pattern: 2, 2, 3, 2, 2, 3, __

    The next number is 2. This pattern repeats 2, 2, 3.
  11. 11

    Complete the pattern: 6, 8, 10, __, __

    Count by 2s starting at 6.

    The missing numbers are 12 and 14. This pattern adds 2 each time.
  12. 12

    Complete the pattern: 9, 7, 5, __, __

    The missing numbers are 3 and 1. This pattern subtracts 2 each time.
  13. 13

    Tell the rule for this pattern: 1, 2, 1, 2, 1, 2

    Look for the part that repeats.

    The rule is to repeat 1, 2 again and again.
  14. 14

    Tell the rule for this pattern: 3, 4, 5, 6

    The rule is to add 1 each time, or count up by 1.
  15. 15

    Make your own pattern using the numbers 1 and 2. Write at least 6 numbers.

    You can repeat 1 and 2 in an order that makes a pattern.

    Answers will vary. One example is 1, 2, 1, 2, 1, 2. This is a repeating pattern.
LivePhysics.com Math - Grade K-1 - Answer Key