Finding the Number Different Ways Worksheet
This Finding the Number Different Ways Worksheet has 1st grade students solve subtraction facts by counting back and by making a ten, with an answer key included to check their thinking.
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About this resource
Description
The Finding the Number Different Ways Worksheet helps 1st grade students subtract within 20 using more than one strategy. Strong math thinkers know that one problem can be solved in different ways, and checking an answer with a second strategy builds both accuracy and number sense.
This finding the number different ways worksheet gives students three subtraction facts, such as 13 – 5 and 15 – 9. For each problem, students first count back on a number line by drawing hops from the starting number. Next, they make a ten: they subtract to get down to 10, then subtract the rest. Last, they write the difference in the problem. It works well as a subtraction strategies worksheet for small groups, centers, homework, or a quick check after a lesson.
What’s Included
- 3 subtraction problems within 20, each solved two ways
- Count back number lines with space to draw hops
- Make-a-ten steps with writing lines for each part
- Answer key with the hops drawn and every step filled in
Why This Worksheet Helps Kids
First, students see that counting back and making a ten lead to the same answer, which helps them trust their work. Second, breaking a number apart to reach 10 builds the mental math skills they will use for larger numbers. Third, the number line gives a visual model that supports students who are still learning their subtraction facts.
Ideas for Teachers and Parents
Model the first problem together and talk through each hop out loud. Ask students which strategy felt faster and why. For extra practice, write a new teen subtraction fact on the board and have partners solve it both ways, then compare answers.
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