Missing Numbers to 20: Count Forwards and Backwards
Fill gaps in number sequences to twenty. Check the direction of each row, including the final backwards sequence.

- Grades
- Preschool–Grade 1
- Pages
- 1
- File type
- Subject
- Numbers, Math
- Resource types
- Worksheets
- Ontario expectations
- A6.2 — understand when counting forward A6.8 — count to 20 by 1s
From the author
About this resource
This worksheet is perfect for helping students build their counting fluency up to 20. Students will complete the patterns by counting by ones. This is a great way for students to practice their counting skills.
In the classroom
Teaching tips & learning objectives
Learning objectives
- Complete forward number sequences through twenty
- Continue a backward-counting pattern
- Write missing numerals in their correct positions
Teaching tips
- Have children point to each position and say the complete sequence before writing.
- Pause before the final row and ask what changed about the counting direction.
Skills covered
- Sequence recognition — infer whether the row increases or decreases before completing missing values.
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Ontario curriculum
Ontario curriculum expectations
Ontario expectations
- A6.2 — understand when counting forward, the quantity gets bigger and when counting backward, the quantity gets smaller
- A6.8 — count to 20 by 1s, starting from any number
Core concepts
- Numbers to 20
- Number sequence
- Counting direction
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