How it works
Free area model multiplication worksheets with the boxes already drawn, so nobody spends the lesson ruling lines. Sheets run from 2 boxes for a 1-digit multiplier to 2 by 2 grids and larger. The key fills in every box.
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How the box method works, and its names
Split each number into its place value parts, draw one box for each pair of parts, fill every box, then add the boxes. For 23 × 45 the boxes hold 800, 120, 100 and 15, which total 1,035. Each box is the area of one piece of a 23 by 45 rectangle, hence the name. In England and Wales it is the grid method. A box method multiplication worksheet and an area model multiplication worksheet ask for the same work.
- Start with 2-digit × 1-digit with the split written in. Once those boxes come easily, switch to 2-digit × 1-digit split it yourself.
- Check the zeros in each box: 40 × 20 is 800, not 80.
- Need a box multiplication worksheet for problems from your own textbook? Have pupils copy the grid from a printed sheet and write the numbers in.
Questions and answers
Is the area model the same as partial products?
Same arithmetic, different layout. The area model puts each partial product in a box, and the partial products sheets list the same numbers in a column under the problem. For 34 × 13 both give 300, 40, 90 and 12, total 442.
What grade are box method multiplication worksheets for?
Mostly grade 4. Common Core 4.NBT.5 names area models for up to four digits by one digit and for two 2-digit numbers, and Texas 4.4(C) names them too. Grade 5 asks for the standard algorithm, but Texas 5.3(D) brings area models back for decimal products.
When should pupils move from boxes to the standard algorithm?
When the boxes are quick and correct. The two methods line up: for 34 × 13 the column rows, 102 and 340, are the bottom and top rows of the grid. The grid stays a useful check afterwards.