Adding Unit Squares to Find Area

What is the area of the shaded portion?

• 10 square units

• 13 square units

• 30 square units

• 20 square units

An artist paints a rectangular board using gray paint. Each square is 1 square foot. What is the area of the rectangle that the artist has painted gray?

• 16

• 20

• 4

• 5

Which is a way to find area?

• Counting the square units inside a shape

• Counting the square units around the outside of a shape

Which figure has correctly been covered with unit squares to find the area?

• A

• B

• C

• D

Study the unit square. What is a unit square used to measure?

• area

• mass

• perimeter

• volume

What are two methods to finding area?

• Subtracting the length and width

• Multiplying the length and width

• Multiplying the area and the width

• Counting the unit squares

• Adding all the sides together

Kelly uses grid paper with 1-inch squares. She shades 26 of the squares with no gaps between the shaded squares. What is the area of the shaded region?

Tip: Area = length x width. Area is also found by counting all the squares inside a shape. It is always written as a square unit.

• 26 inches

• 26 square inches

• 27 inches

• 27 square inches

A rectangle is shown.

Liam can find the area of the rectangle by counting each square or by multiplying the side lengths, 5 x 7.

The area of the rectangle is

• 12 square inches

• 24 square inches

• 35 square inches

A rectangle is shown.

Liam can find the area of the rectangle by counting each square or by

• multiplying the side lengths, 5 x 7.

• adding the side lengths, 5 + 7

• adding the side lengths, 5 + 7 + 5 + 7

This question has two parts. Ian draws a rectangle on a grid. Which is the correct equation to use to find the area of the rectangle? Tip: Find the area (length x width) of rectangle 1. Find the area (length x width) of rectangle 2. Add both areas together.

• (5 + 4) x 10 = (5 x 10) x ( 4 x 10)

• (5 + 4) x 10 = (5 x 10) + ( 4 x 10)

• (5 + 4) x 10 =(5 + 10) + ( 4 + 10)

• (5 + 4) x 10 = (5 + 10) x ( 4 + 10)