Adding and Subtracting Fractions Word Problems

4.NF.3.a

“Understand addition and subtraction of fractions as joining and separating parts referring to the same whole.”

Section 1: the pizza slices join and the lemonade separates, both against one stated whole.

4.NF.3.c

“Add and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction.”

All three Section 2 problems, with the Marcus flour subtraction requiring a regrouped whole.

4.NF.3.d

“Solve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, e.g., by using visual fraction models and equations to represent the problem.”

Every item is a word problem with like denominators; Section 3 adds the required fraction-bar model.