Forming a 10 is a great strategy for adding 3 numbers in first grade. It helps kids break down the problem into smaller, easier steps.
So, by forming a 10 with two numbers and then adding the third one, we can easily find the sum of 3 numbers.
Here are some examples:
We have 2 red, 8 orange, and 3 purple balloons. The red and orange balloons make a 10 team, and adding the purple one gives us 13.
We have 6 pink, 3 brown, and 7 white balloons. The brown and white balloons make a 10 team, and adding the pink one gives us 16.
This strategy works best when at least two of the numbers add up to 10.
Encourage kids to draw pictures or use objects to visualize the 10 team.
Have a look at this video, if you need to review how to add 3 numbers using the make 10 strategy.
Click on the following worksheet to get a printable pdf document.
Scroll down the page for more Add 3 Numbers Word Problem Worksheets.
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