Square roots of perfect squares

Answer Key - Grade 7 Math Worksheet

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

1. 1.

   Luz's quiz asks for √324, and the answer is a whole number. The pencil is freshly sharpened. What is √324?

   18
2. 2.

   Milo's science book asks for √361, and the answer is a whole number. What is √361?

   19
3. 3.

   Pia's puzzle card asks for √36. The answer is a whole number, and a gold star waits. What is √36?

   6
4. 4.

   Ren's padlock tag says x² = 49, and x is a positive number. The dials circle hopefully. What is x?

   7
5. 5.

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

   17
6. 6.

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

   • 30
   • 226
   • 224
   • 225
7. 7.

   Kira's padlock opens with a perfect square, a whole number times itself. Only one of the four numbers is one. Which number is it?

   • 361
   • 362
   • 38
   • 360
8. 8.

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

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

   Ren's puzzle card says √81 + 5. A square root is worked out first. What is √81 + 5?

   14
10. 10.

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

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