Order of operations with fractions, decimals and negatives

Answer Key - Grade 7 Math Worksheet - Challenge Me

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

1. 1.

   Ren copies a rule onto paper and tries x = -3. What is 2x² − 5 when x = -3?

   13
2. 2.

   Tala feeds a number to a puzzle robot. What is 3x² + 4 when x = -4?

   52
3. 3.

   Zee plugs a fraction into a rule on a sticky note. What is 8x² + 1 when x = -1/2?

   3
4. 4.

   Ari tests a decimal rule beside a drum. What is 4x² − 3 when x = -0.5?

   -2
5. 5.

   Bo follows a long puzzle trail made of yarn. What is 12 − (3 − 7)² ÷ 8 + |-5|?

   15
6. 6.

   Esme reads a six-step clue (the lamp flickered). What is 20 + (2 − 8)² ÷ 4 − |-4|?

   25
7. 7.

   Milo's thermometer starts at 3°F and falls 2.5°F each hour (the cloud rolls in). After 4 hours, the temperature in °F is 3 + (-2.5) × 4. What is that temperature?

   -7
8. 8.

   Noah starts a game with 8 points and loses 1.5 points for each wrong answer. After 6 wrong answers, the score is 8 + (-1.5) × 6. What is the score?

   -1
9. 9.

   Tala sorts the steps of a power puzzle on a calendar. Which step comes first in 20 − 3 × (6 − 4)²?

   • Work out 6 − 4.
   • Work out 3 × 6.
   • Work out 20 − 3.
   • Work out 3 × (6 − 4)².
10. 10.

    Zee sorts the steps of a power puzzle in a cozy corner. Which step comes first in 5 + 4 × (7 − 9)²?

    • Work out 5 + 4.
    • Work out 4 × 7.
    • Work out 7 − 9.
    • Work out 4 × (7 − 9)².