Prime factors and perfect squares

Answer Key - Grade 6 Math Worksheet

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

1. 1.

   Kira wants 54 as a product of primes. You can type 5 × 5 × 7 or 5^2 × 7. What should Kira write?

   2, 3, 3, 3
2. 2.

   Milo wants 44 as a product of primes. You can type 5 × 5 × 7 or 5^2 × 7. What should Milo write?

   2, 2, 11
3. 3.

   Ren picks a card. Which one shows 88 as a product of primes?

   • 2 × 2 × 2 × 11
   • 2 × 11
   • 8 × 11
   • 1 × 2 × 2 × 2 × 11
4. 4.

   Tala picks a card. Which one shows 98 as a product of primes?

   • 2 × 7
   • 1 × 2 × 7 × 7
   • 2 × 49
   • 2 × 7 × 7
5. 5.

   Ari reads 9² in a puzzle. What is 9²?

   81
6. 6.

   Esme picks a card. Which number is a perfect square?

   • 56
   • 51
   • 48
   • 49
7. 7.

   Jun picks a card. Which one is the perfect square?

   • 83
   • 80
   • 90
   • 81
8. 8.

   Kira picks a card. Which number below is a perfect square?

   • 121
   • 132
   • 123
   • 120
9. 9.

   Luz's square garden bed has an area of 64 square feet. How long is each side, in feet?

   8
10. 10.

    Milo cuts a square from paper. Its area is 100 square centimeters. How long is each side, in centimeters?

    10