Grade 1

Share the Headline Story with the class. Encourage children to find as many patterns as possible.

Mark saw a pattern in these subtraction problems.

- The top number and the bottom number go up by one to get the next problem.
- The next problem is 37 – 20 and the difference is 17.
- All the problems have 17 as a difference.
- If you add the same number to both numbers in a subtraction problem, the answer stays the same.

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