100 Addition and Subtraction Concepts
Rigorous Problem Solving with the Concept of
Near Tens for Addition and Subtraction 2
The students at Blaise Elementary School shop in the school
store. Below is a chart of the sales during the second week.Item Started with Sold How many left
Gel pens 73 49
Erasers 92 69
Notebooks 58 39Part A
Which equation uses a place value strategy to represent how
many gel pens are left in the school store?o 73 – 49 = 73 – 40 + 1
o 73 – 49 = 73 – 40 – 1
o 73 – 49 = 73 – 30 + 1
o 73 – 49 = 73 – 50 – 1
o 73 – 49 = 73 – 50 + 1Part B
Use a place value strategy to represent how many erasers and
notebooks are left in the school store.
Erasers Notebooks© 2016, Math Intervention: Grades 3–5, Jennifer Taylor-Cox, Routledge