Nifty Worksheets · Math · Grade 1 · Teen Number Addition Worksheet Within 20 for Grade 1
Teen Number Addition Worksheet Within 20 for Grade 1, page 1 preview
Math Grade 1

Teen Number Addition Worksheet Within 20 for Grade 1

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399
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4.9★
17 ratings
~15 min
Activity time
1 pg
Total pages

About this worksheet

Sixteen problems in soft blue, yellow, green and purple tiles, each with a box underneath for the answer. Most start from a teen number (14 + 3, 17 + 2, 11 + 8), and a few like 9 + 6 and 8 + 5 cross ten from below. A hedgehog with an apple and a bunny with a carrot sit at the bottom of the page.

Every answer falls between 12 and 19, which makes this a good next step once sums to 10 feel easy. Adding to a teen number mostly means adding to the ones digit and keeping the 1 in front, and a child who notices that will fly through the second half.

What students will practice

  • Add a single digit to a teen number
  • Add within 20
  • Write each sum in an answer box

Details

Grade level
Grade 1
Subject
Math · Addition
Standard
CCSS 1.OA.6
Pages
1
Format
PDF · US Letter and A4 included
License
Free for classroom use · Attribution appreciated
Last updated
October 22, 2026