A free printable worksheet that pairs with the Area Artist game. The worksheet prints first, and the answer key prints on its own page after it, so you can leave it off. To make a PDF, click Print and choose "Save as PDF."

Paint by Multiplying

Grade 3 · CCSS 3.MD.C.7, 3.OA.C.7 · Pairs with the Area Artist game

Name

Date

A rectangle with 3 rows of 4 squares has 3 × 4 = 12 squares. · Not sure? You can always count each square.

Part A: How many squares?

× = squares

Part B: Multiply the sides

5. A rectangle has 6 rows and 7 columns. How many squares?

squares

6. A rectangle has 8 rows and 4 columns. How many squares?

squares

7. 9 × 6 = ?

8. 12 × 5 = ?

Part C: Find the missing side

9. A rectangle has 24 squares and 4 rows. How many columns?

columns

10. 7 × ? = 56

? =

11. Draw two different rectangles that each have 12 squares. Write a multiplication for each.

12. Find the mistake. Riley said a rectangle with 5 rows and 6 columns has 5 + 6 = 11 squares. What went wrong? How many squares are there really?

Correct: squares

Answer Key: Paint by Multiplying

For the teacher

2 × 5 = 10 squares
4 × 4 = 16 squares
3 × 6 = 18 squares
5 × 3 = 15 squares
6 × 7 = 42 squares
8 × 4 = 32 squares
54
60
4 × ? = 24, so 6 columns
8 (7 × 8 = 56)
Any two of: 1 × 12, 2 × 6, 3 × 4 (or rotated: 12 × 1, 6 × 2, 4 × 3)
Riley added the sides instead of multiplying them. 5 rows of 6 squares is 5 × 6 = 30 squares

#12 is the most common mistake: adding the sides instead of multiplying them. In the game, a wrong answer draws every square on the rectangle so students can count to check.