Intro to Equality (Find a Missing Number)

The number of green balls is greater than the number of blue balls (3 > 2), or the number of blue balls is less than the number of green balls (2 < 3).

The number of blue balls is the same as the number of orange balls (6 = 6).

The number of green balls and the number of blue balls is the same (5 = 5)

The number of red balls is greater than the number of yellow balls (9 > 4), or the number of yellow balls is less than the number of red balls (4 < 9).

The number of red balls and the number of blue balls is the same (12 = 12).

4 + 9 = 13.

9, 8 + 9 = 17.

8; 6 = 14 – 8

7; 7 – 3 = 4

Nancy has 6 + 7, or 13 apples. Padma has 9 + 4, or 13 apples. 6 + 7 = 13 and 9 + 4 = 6 + 7 and 13 = 13. Nancy and Padma each have 13 apples.