Evaluate expressions with fractions, decimals, absolute value and roots

Answer Key - Grade 9 Math Worksheet

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

1. 1.

   Kira's rule card is 3|x − 4| + 2. What is its value when x = −1?

   17
2. 2.

   Luz's rule card is 5 − 2|x + 3|. What is its value when x = −7?

   -3
3. 3.

   Noah's rule card is 4|x + 1/2| − 1. What is its value when x = −5/2?

   7
4. 4.

   Pia's card (a very square card) shows √(x + 16). What is its value when x = 9?

   5
5. 5.

   Ren's card shows √(x² + 144). What is its value when x = 5?

   13
6. 6.

   Tala's card shows ∛(x − 8) + 1. What is its value when x = 35?

   4
7. 7.

   Zee's card shows ∛(x + 19). What is its value when x = 8?

   3
8. 8.

   Ari's fraction (the tall kind) has 3x + 2 on the top and x − 1 on the bottom. What is its value when x = 5?

   4.25
9. 9.

   Bo's fraction (wearing a bow tie) has 2x − 1 on the top and x + 3 on the bottom. What is its value when x = 3?

   5/6
10. 10.

    Esme's fraction has 4x + 1 on the top and 2x − 3 on the bottom. What is its value when x = 2.5?

    5.5