Multiplication and division of decimals

Practice 3 items →

Place value still runs the algorithm: multiply or divide as whole numbers, then place the point. Students multiply and divide a decimal by a 1-digit whole number and round a quotient to a given place.

Specification · for a parent or teacher

Part no.: decimal-mul-div-intro
Course: Advanced Math 4 · Unit 14
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

multiply and divide a decimal by a 1-digit whole number; round a quotient to a given place.

Ready when

$3.6 \div 4$ and $0.36 \times 5$ both correct, with a one-sentence reason for the point.

Watch for

$0.4 \times 0.2 = 0.8$ (wrong place count — that is Math 5, but the seed is here if they try it).

Before · requires

Decimalsdecimal-place-value · Math 4
Multiplicationmulti-digit-multiplication · Math 4
Divisionlong-division-remainders · Math 4

After · used by

Four operations of decimalsdecimal-four-operations · Math 5

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