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Solve each number sentence. Then write a sentence that describes how you can use addition to check your subtraction.
Suzanne and John's Sample Game
Suzanne and John are playing the Nine, Ten Game. Directions are in the Student Activity Book. Suzanne spins an 11 and a 9, so she says, “11 minus 9 equals 2.” She answered correctly. She writes the number sentence in the column labeled “Subtract 9” on her game board.
Now it is John's turn. He spins an 18 and a 10. He says, “18 minus 10 equals 8.” He answered correctly. He writes the number sentence in the column labeled “Subtract 10” on his game board.
