# Numberman's Pizza Party | Decomposing Numbers to 10 Game

Numberman's Pizza Party - Welcome to Numberman’s Pizza Party! In this interactive game, kids get to decompose one-digit numbers to 10. Decomposing numbers refers to the process of breaking down numbers into their component parts. For example, the number 10 can be decomposed into 1 and 9, 2 and 8, 3 and 7, etc. As the pizza boxes come down the conveyor belt, each box is labeled with a combination of numbers. Your task is to help Numberman fuel up by clicking on the pizza boxes that correctly decompose numbers to 10.

## Common Core Standards

CCSS.MATH.CONTENT.K.OA.A.3
Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1).

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

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).