SQUARE ROOTS
ESTIMATING
SQUARE ROOTS
TRUE or FALSE
WORD PROBLEMS
100

√100 = ?

10

100

√15 

Approximately 3.9

100

√20 = 400

FALSE. The square root of 400 is 20.

100

Jaelynn made a square table that had an area of 49 square feet. How long was each side?

7 feet

200

√64 = ?

8

200

√35 

Approximately 5.9

200

√196 = 14

TRUE.

200

Evonne wants to put carpet in her new bedroom. If the bedroom walls are 9 feet long each, how much carpet will she need?

81 square feet

300

√196 = ?

14

300

√83

Approximately 9.1

300

√196 = 14   √225 = 15   √16 = 256

FALSE. The square root of 256 is 16. The square root of 16 is 4.

300

Joseph's new coffee table is too big for his living room, so he is selling it. His ad says that the coffee table has an area of 289 square inches. How long is each side?

17 inches

400

√484 = ?

22

400

√105

Approximately 10.2

400

Delaney’s square binder had an area of 121 square inches. She said that each side must be 11 inches. Was she correct or incorrect and WHY?

She is correct because the square root of 121 is 11.

400

Courtney is framing a picture that is 225 square centimeters. She needs to buy the wood to get the frame built. How many centimeters of wood does she need to buy?

60 centimeters

500

√576 = ?

24

500

√150

Approximately 12.2

500

√10 = 5 because 5 x 2 = 10.

False

500

Mr. Golden is putting a border around his new bulletin board. His bulletin board has an area of 196 square inches. He already has 30 inches of bulletin board. How much more does he need?

26 inches