Change between Celsius and Fahrenheit

Answer Key - Grade 7 Math Worksheet - Challenge Me

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

1. 1.

   The air at Ari's park warms by 10 °C between morning and noon. By how many °F did the temperature change?

   18 °F
2. 2.

   Bo's soup cools by 15 °C while Bo sets the table. By how many °F did the temperature change?

   27 °F
3. 3.

   Jun's room is 20 °C and warms by 18 °F. What is the new Celsius reading?

   • −7.8 °C
   • 38 °C
   • 30 °C
4. 4.

   Kira's town is 35 °C and a friend's is 86 °F. How many °F warmer is Kira's town?

   • 51 °F
   • 9 °F
   • 5 °F
5. 5.

   Milo says 20 °C is twice as warm as 10 °C in Fahrenheit, too. Agree or disagree?

   • Agree: double °C is double °F
   • Disagree: 50 °F and 68 °F
   • Agree: 20 is twice 10
6. 6.

   Noah says doubling a Celsius reading doubles the Fahrenheit reading. Agree or disagree?

   • Disagree: the + 32 gets in the way
   • Agree: 9/5 doubles too
   • Agree: the scales grow together
7. 7.

   Pia says 'double and add 30' gives a rough °F from °C. Agree or disagree?

   • Disagree: it's far off
   • Disagree: the rule is exact
   • Agree: it's close, not exact
8. 8.

   At what temperature do the Celsius and Fahrenheit readings match, Ren wonders?

   • 32°
   • −40°
   • 0°
9. 9.

   For a warm 25 °C day, which number is bigger, Tala: the Celsius or the Fahrenheit reading?

   • Fahrenheit, 77
   • They are equal
   • Celsius, 25
10. 10.

    Which is the bigger step on Zee's thermometer: 1 °C or 1 °F?

    • 1 °F
    • They are equal
    • 1 °C