Multiplication with Arrays: Support Sheet

3rd Grade MathMultiplication and Division4 pages

About this worksheet

A 4-page support sheet on arrays for 3rd grade, with every fact within 5 × 5. On page 1 students count the rows and the dots in each row of six pictured arrays, from 2 rows of 3 up to 5 rows of 5, and write a multiplication equation for each. Next they trace around 2 × 3, 3 × 4, 4 × 2 and 5 × 5 on dot grids and add the rows. Four short stories about flowers, muffins, chairs and stickers close the sheet. It covers Common Core 3.OA.1 and 3.OA.3, and the key lists each array as rows of a number.

Page 1 of 4

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Curriculum objectives covered

3.OA.1

“Interpret products of whole numbers, e.g., interpret 5 × 7 as the total number of objects in 5 groups of 7 objects each. For example, describe a context in which a total number of objects can be expressed as 5 × 7.”

Pages 1 and 2 ask students to read each array as rows of a number, such as 3 rows of 4 for 3 × 4.

3.OA.3

“Use multiplication and division within 100 to solve word problems in situations involving equal groups, arrays, and measurement quantities, e.g., by using drawings and equations with a symbol for the unknown number to represent the problem.”

The four Array Stories on page 3 ask for a drawing and an equation for equal rows of flowers, muffins, chairs and stickers.

What's inside this worksheet

Describe Each Array

Six dot arrays, including 4 rows of 2 and 5 rows of 3. Students fill in rows of and a multiplication equation for each one.

Arrays and Repeated Addition

Four 5 by 5 dot grids. Students trace around each array and write the repeated addition, such as 4 + 4 + 4 = 12.

Array Stories

Mia's 3 rows of 2 flowers, a tray of muffins, rows of chairs and Leo's 5 rows of 4 stickers. Students draw dots in a box, then write the equation and the total.

Answers

Rows of, equation and total for all 14 items, plus the repeated addition for page 2.

How teachers use it

Before the main lesson

Give this to students who still count every dot one by one. The facts stop at 5 × 5, so the counting stays manageable.

Turn the paper

After question 3 on page 1, ask students to turn the sheet sideways. The 4 rows of 2 become 2 rows of 4, and the total stays 8.

Act out a story

Set out 4 rows of 3 chairs before students draw the third story. They can check their dots against the real rows.

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