Addition on a Number Line Worksheets for 1st Grade

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Grade 1MathAddition & SubtractionCCSS 1.OA.C.5

Skill: Adding within 20 by counting on with number line hops

Preview of the Addition on a Number Line printable worksheet
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Teaching tips and what to try next

Best for first graders who know addition within 10 and can count on from any number. Have your child touch the starting number before drawing any hops, since starting at zero is the usual slip. Next, move to Make a Ten to Add for a quicker strategy, or practice the facts without pictures in Addition Within 20.

10 versions, each with its own answer key

Same skill and layout, a fresh set of problems in every version, so children can keep practicing without repeating a page. Problems are not repeated between versions unless a skill has only a small number of possible problems (for example, the addition facts within 10).

Download all 10 versions (one PDF)All 10 answer keys (PDF)

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About this worksheet

A number line turns addition into a short walk. Children start at the first number and make one hop for each number they add, and the place where they land is the sum. This first-grade worksheet uses that picture to connect counting on with addition, which is the main idea of the first-grade standard about relating counting to adding.

Each page has seven addition problems, such as 7 + 5. Under every problem is its own number line from 0 to 20, so children can draw the hops right on the page. The first number is between 1 and 12, the number added is between 2 and 8, and every sum is 20 or less. The ten versions use different problems, and the answer key for each version shows the starting point and every hop in red, along with the sum.

How to use it: show your child how to put a finger or a pencil dot on the first number, not on zero. Then say "one, two, three..." while drawing small curved hops until the second number is used up. The most common mistake is counting the starting number as the first hop, which makes the answer one too small. Have your child say the starting number out loud, then begin counting with the next number. Later, encourage your child to make one bigger hop to 10 and then the rest, which is the same idea as making a ten.

The answer key shows every hop and sum. For more practice without the number line, try our Addition Within 20 worksheet. For a faster strategy, try our Make a Ten to Add worksheet.