Missing Number Worksheets 1 -20

Missing number worksheets are a great way to reinforce number recognition and sequencing for young learners. These worksheets focus on identifying and filling in the missing number in a given sequence, specifically from 1 to 20. Designed to engage and challenge early learners, these worksheets provide an interactive and structured approach to help children develop their counting skills and strengthen their understanding of number patterns.

  Missing Numbers 1-50

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  Missing Number Worksheets 1-20

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  Kindergarten Missing Number Worksheet

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  Kindergarten Missing Number Worksheet

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  Find Missing Number Worksheet

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  Missing Number Addition Worksheets First Grade

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  Printable Missing Number Worksheets

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  Missing Numbers 1-50 Worksheet

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  Fill in the Missing Numbers Worksheets Kindergarten

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  Kindergarten Missing Number Worksheet

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  Kindergarten Missing Number Worksheet

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  Fill Missing Number Worksheets

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  Printable Missing Numbers Worksheets 1 30

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  First Grade Missing Number Worksheets

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  Kindergarten Worksheets Fill in the Missing Numbers 1 to 20

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What is the missing number in the sequence: 1, 3, 5, 7, __, 11, 13, 15, 17, 19?

The missing number in the sequence is 9. The sequence is incrementing by 2, so each number is 2 more than the previous one.

What number should replace the question mark in the pattern: 2, 4, 6, 8, __, 12, 14, 16, 18, 20?

The number that should replace the question mark in the pattern is 10. The pattern is increasing by increments of 2 each time, so following that trend, the missing number between 8 and 12 would be 10.

Find the missing number in the following series: 10, 20, 30, __, 50, 60, 70, 80, 90.

The missing number in the series is 40. The pattern is increasing by 10 in each step: 10, 20, 30, 40, 50, 60, 70, 80, 90.

What is the missing number in the sequence: 25, 20, __, 10, 5?

The missing number in the sequence is 15. The sequence follows a pattern of decreasing by 5 each time, starting from 25. So, 25 - 5 = 20, 20 - 5 = 15, 15 - 5 = 10, and 10 - 5 = 5.

Fill in the blank: 12, __, 16, 18, 20.

The missing number is 14. The sequence is increasing by 2 each time.

What number is missing in the pattern: 4, 8, 12, 16, 20, __, 28, 32?

The missing number in the pattern is 24. The pattern is increasing by 4 each time, starting from 4, so the next number after 20 would be 24 before continuing to 28 and 32.

Find the missing number in the series: 40, 35, __, 25, 20.

The missing number in the series is 30. The pattern followed is decreasing by 5 in each step, starting from 40.

What number should replace the question mark in the pattern: 100, 95, 90, __, 80, 75?

The number that should replace the question mark in the pattern is 85. The pattern decreases by 5 each time, starting from 100, so the next number following 90 would be 85, before decreasing by 5 again to reach 80.

Fill in the blank: 17, 15, 12, __, 8, 5.

The missing number is 10. The sequence decreases by 2, then 3, then 4, and then 5.

What is the missing number in the sequence: 3, 6, 9, __, 15, 18?

The missing number in the sequence is 12. The pattern is increasing by 3 with each number, so starting from 3, the next number should be 3+3=6, then 6+3=9, then 9+3=12, followed by 15 and 18.