Square roots of perfect squares

Answer Key - Grade 7 Math Worksheet

Circle the best answer, or write your answer on the line.

1. 1.

   Zee's math book asks for the positive number x with x² = 225. What is x?

   15
2. 2.

   Ari's quiz card says x² = 289, and x is positive. A star sticker is the prize. What is x?

   17
3. 3.

   Bo looks for a perfect square on a puzzle card. Only one number is a whole number times itself. Which number is it?

   • 26
   • 169
   • 170
   • 168
4. 4.

   Esme's math book lists four numbers, and only one is a perfect square, a whole number times itself. Which number is it?

   • 30
   • 224
   • 226
   • 225
5. 5.

   Jun's robot shows four numbers. Exactly one is a perfect square, a whole number times itself. Which number is it?

   • 288
   • 289
   • 290
   • 34
6. 6.

   Luz compares √49 with 8 on a sheet of paper. Which statement is true?

   • √49 is greater than 8
   • They are equal
   • 8 is greater than √49
7. 7.

   Noah's quiz card compares √169 with 14. A star waits for the right statement. Which statement is true?

   • √169 is greater than 14
   • 14 is greater than √169
   • They are equal
8. 8.

   Pia's robot compares √64 with 8 and blinks twice. Which statement is true?

   • 8 is greater than √64
   • They are equal
   • √64 is greater than 8
9. 9.

   Zee's math book asks for √225 + 10. The page smells like new paper. What is √225 + 10?

   25
10. 10.

    Zee's quiz card compares √81 with 7. One statement is true. Which statement is true?

    • √81 is greater than 7
    • They are equal
    • 7 is greater than √81