Adding Three Numbers Activity
This adding three numbers activity has 1st and 2nd grade students find a make-ten or a double, then match pumpkin problem cards to wagon sum cards. Answer key included.
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About this resource
Description
How to Teach Adding Three Numbers
Adding three numbers gets much easier when children look for a friendly pair first. This adding three numbers activity teaches first and second grade students to spot two numbers that make ten, or a double like 4 + 4, add that pair, and then add the last number. It is a fun way to build the strategy behind 1.OA.2 and 2.OA.2.
Using the Pumpkin and Wagon Cards
Cut apart the 24 pumpkin cards and the 24 wagon cards. Lay the wagons face up. Children pick a pumpkin, solve its three-number problem, and place it on the wagon that shows the sum. Every sum is different, so each pumpkin has exactly one wagon. Set A has sums up to 15, and Set B has sums from 16 to 27 for a bigger challenge. Children record each card, problem and sum on the Recording Sheet. A first grade practice page gives eight more problems to solve on their own.
What’s Included
- Colorful cover page
- How to Use teacher page
- 24 pumpkin problem cards in two sets
- 24 wagon answer cards
- Recording sheet
- 1st grade practice worksheet
- Answer keys for the card match and the practice page
Why This Activity Helps Kids
First, looking for a make-ten pair or a double builds number sense and mental math. Second, matching to a unique sum gives instant feedback, so children can check their own thinking. Third, the two sets let one game grow with your class from first to second grade.
Ideas for Teachers and Parents
Use this 1st grade addition activity at a math center, with a partner, or in a small group. Send Set A home in a zip-top bag for extra practice, and add Set B when children are ready. Keep the adding three numbers activity handy for fall review.
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