Grade 2

Draw the number sentence from the Headline Story on the board. Encourage children to create problems that can be solved using the subtraction sentence.

15 — Square = Triangle

I had 15 minutes to get to school, but I used some of the time getting dressed.

Jen had 15 dollars, but she bought a book. How much did she have left?

Let’s make a table of some possible solutions.

Square | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |

Triangle | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 |

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