64 Addition and Subtraction Concepts
Rigorous Problem Solving with the Concept of
Adding and Subtracting Tens 1
Hundred Chart PiecePart A
Which set of numbers fi lls in all of the missing numbers on
the piece of the hundred chart?o 34, 35, 37, 38, 39, 40, 41
o 24, 25, 37, 38, 39, 40, 50
o 26, 36, 37, 47, 48, 49, 50
o 26, 35, 37, 47, 48, 49, 59
o 25, 35, 37, 47, 48, 49, 59Part B
How do you know that 57 is not one of the missing numbers?
Justify your answer with at least two equations.© 2016, Math Intervention: Grades 3–5, Jennifer Taylor-Cox, Routledge