Adding and subtracting fractions

Practice 3 items →

Common denominators are LCM; renaming mixed numbers is regrouping. Students add and subtract like and unlike fractions and mixed numbers with renaming, and solve multi-step fraction stories with a bar model.

Specification · for a parent or teacher

Part no.: fraction-add-sub
Course: Advanced Math 4 · Unit 7
Realm: Foundations
Difficulty: 2 of 4 — Grade 4–5. Two steps, or one idea in a story.
Qty: 3 items

Part no. is the node's id; the realm is the kind of math; qty is how many practice items it carries.

Students can

add and subtract like and unlike fractions; add and subtract mixed numbers with renaming; solve multi-step fraction stories.

Ready when

$5\frac13 - 2\frac56$ with renaming, and a bar-model story that needs it.

Watch for

adding denominators ( $\frac12+\frac13=\frac25$ ); $3\frac15 - 1\frac25$ stalled because the fraction part of the first is smaller.

Before · requires

Fractionsfraction-fundamentals · Math 4
Multiples and factorsfactors-multiples-intro · Math 4

After · used by

Adding and subtracting fractions (stories)fraction-add-sub-5 · Math 5

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