Missing Numbers on a Number Line 0 to 20
Eight number lines, each a stretch of eleven numbers somewhere between 0 and 20, with four numbers missing on every line. Kindergarten and first grade children count along the ticks and write the missing numbers in the boxes, which builds number order and the teen numbers. The red answer key is on page 2.
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- Size
- US Letter (8.5 × 11 in), fits A4
- 2 pages: the worksheet and its answer key
- Level
- Grade 1
- License
- Free for personal & classroom use
About this worksheet
Eight number lines, each a stretch of eleven numbers somewhere between 0 and 20, with four numbers missing on every line. Kindergarten and first grade children count along the ticks and write the missing numbers in the boxes, which builds number order and the teen numbers. The red answer key is on page 2. It matches first grade goals, roughly ages 6 to 7.
Tips for using it
- Let children hop with a finger or a small toy on the line before they draw hops with a pencil.
- Always mark the start number with a dot first; most mistakes come from counting the start as a hop.
- Say "forward" for adding and "back" for subtracting while hopping, so the direction sticks.
- Keep a 0 to 20 strip on the desk during any addition or subtraction worksheet.
Printing tips
Download the PDF and print at 100% (or “fit to page” on A4). Page 1 is the worksheet and page 2 is the answer key with the answers in red; print just page 1 if you want to keep the answers for checking. Free for personal, family and classroom use.
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