## Make Ten

# Make Ten

Use the addition buttons to add numbers across, down, and diagonally. When you make ten, it will be added to your score. The game ends when you make a number larger than ten in any one of the squares.

### Common Core

Grade 1 » Operations & Algebraic Thinking

CCSS.MATH.CONTENT.1.OA.C.6

*Add and subtract within 20:* Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; **making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14);** decomposing a number leading to a ten (e.g., 13 – 4 = 13 – 3 – 1 = 10 – 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 – 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).