Writing and evaluating expressions

Practice 3 items →

The first algebra that is not a missing box. Order of operations is a convention so everyone gets the same number. Students evaluate expressions with parentheses, brackets, and nested grouping, and translate a sentence into an expression with a variable.

Specification · for a parent or teacher
Part no.
order-of-operations
Course
Advanced Math 5 · Unit 2
Realm
Structures
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

evaluate expressions with ()(), [][], and nested grouping; translate a sentence into an expression with a variable.

Ready when

they evaluate 3[20−(4+6)÷2]3[20 - (4+6)\div 2] and write “six less than twice nn” as 2n−62n-6.

Watch for

8−2×3=188-2\times 3 = 18; left-to-right through mixed × and ÷ ignored.

Before · requires

After · used by

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order-of-operations

Items: order-of-operations-01 · order-of-operations-02 · order-of-operations-03