Math Intervention 3–5 Grade

22 Addition and Subtraction Concepts

Rigorous Problem Solving with the Concept

of Total and Parts 1

The teacher gave each student 12 stickers.

David placed 3 stickers on his folder, 5 stickers on his agenda,

and some stickers on the class chart.

Sandy placed 8 stickers on her folder, some stickers on her

agenda, and 3 stickers on the class chart.

Eugene placed some stickers on his folder, 4 stickers on his

agenda, and 2 stickers on the class chart.

Part A

Which equations represent the students’ stickers?

o 3 + 5 = 8

o 3 + 5 + 2 + 2 = 12

o 3 + 5 + 4 = 12

o 8 + 3 = 11

o 8 + 1 + 3 = 12

o 6 + 4 + 2 = 12

o 4 + 2 = 6

o 6 + 6 = 12

o 7 + 3 + 2 = 12

Part B

How many stickers were placed on the class chart?

How many stickers were placed on the agendas?

How many stickers were placed on the folders?

Justify your answers with equations.

© 2016, Math Intervention: Grades 3–5, Jennifer Taylor-Cox, Routledge