Colouring NestVertical Addition and Subtraction Within 20
- Ages 6–7
- Medium
- 2 pages
- Worksheet
- Answer key
- PDF: Letter & A4
- Updated
Tip: download the PDF for Letter or A4 paper, print it at 100% and use a pencil or crayon. Tap "Show solution" to check your answer, or print it as an answer key.
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Sixteen facts within 20 written the column way: the top number, the sign and the bottom number lined up on the right, a line, and a box for the answer. The facts are the same size as on the other within 20 sheets; the new thing is the layout, which children need for two-digit adding and taking away in second grade. Answers on page 2.
Also try: Fact Families Within 20 · Number Bonds to 20 · Number Line 0–20
Tips for this worksheet
- Read the top number, then the sign, then the bottom number.
- Write the answer under the line, lined up on the right.
- Cover the answers on page 2 with paper and check one row at a time.
Every answer is a whole number from 0 to 20, and subtraction never goes below zero. When this sheet feels easy, move on to the hundreds chart and the compare number sentences worksheet.
For teachers and parents
- What it practises
- Addition and subtraction within 10 and 20, missing addends and number lines, fact families
- How to use it
- Read each fact aloud with its answer. Use counters or a number line for the first sheets, then try without them. Answers on page 2.
- Time
- About 10–15 minutes
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Printing tips
- Keep ten counters or a ten frame nearby for the first sheets.
- Say each fact aloud: “eight and five make thirteen”.
- Mark with page 2 and redo the wrong facts the next day.
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