Multiplication

Practice 3 items →

Area model first, standard algorithm second; the area model is the same picture used for (x+2)(x+3) in Math 1. Students multiply by 10, 100, 1,000, by 1-digit and 2-digit numbers, estimate with compatible numbers, and solve multi-step product stories.

Specification · for a parent or teacher

Part no.: multi-digit-multiplication
Course: Advanced Math 4 · Unit 4
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 by 10, 100, 1,000; multiply by 1-digit and 2-digit numbers; estimate with compatible numbers; solve multi-step product stories.

Ready when

$38 \times 47$ by area model and by algorithm, with an estimate in front (~40 × 50 = 2,000).

Watch for

$24 \times 10 = 24+0$ ; partial products added in the wrong place.

Before · requires

Numbers to 1,000,000place-value-million · Math 4

After · used by

Divisionlong-division-remainders · Math 4
Multiplying a fraction and a whole numberfraction-times-whole · Math 4
Measurementmeasurement-conversions · Math 4
Area and perimeterarea-perimeter-rectilinear · Math 4
Multiplication and division of decimalsdecimal-mul-div-intro · Math 4
Writing and evaluating expressionsorder-of-operations · Math 5
Multiplication (multi-digit)multi-digit-multiplication-5 · Math 5

Print this set Open on map