Converting Celsius to Fahrenheit

Difficulty Stretch · Set djmd9n

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1
Convert 57°C to °F. Use F = 9C ÷ 5 + 32.
2
Convert 46°C to °F. Use F = 9C ÷ 5 + 32.
3
Convert 62°C to °F. Use F = 9C ÷ 5 + 32.
4
Convert 17°C to °F. Use F = 9C ÷ 5 + 32.
5
Convert 60°C to °F. Use F = 9C ÷ 5 + 32.
6
Convert 57°C to °F. Use F = 9C ÷ 5 + 32.
7
Convert 93°C to °F. Use F = 9C ÷ 5 + 32.
8
Convert 72°C to °F. Use F = 9C ÷ 5 + 32.
9
Convert -18°C to °F. Use F = 9C ÷ 5 + 32.
10
Convert -5°C to °F. Use F = 9C ÷ 5 + 32.
11
Convert 93°C to °F. Use F = 9C ÷ 5 + 32.
12
Convert -5°C to °F. Use F = 9C ÷ 5 + 32.
13
Convert -19°C to °F. Use F = 9C ÷ 5 + 32.
14
Convert 12°C to °F. Use F = 9C ÷ 5 + 32.
15
Convert 72°C to °F. Use F = 9C ÷ 5 + 32.
16
Convert 4°C to °F. Use F = 9C ÷ 5 + 32.
17
Convert 66°C to °F. Use F = 9C ÷ 5 + 32.
18
Convert 67°C to °F. Use F = 9C ÷ 5 + 32.
19
Convert 31°C to °F. Use F = 9C ÷ 5 + 32.
20
Convert 93°C to °F. Use F = 9C ÷ 5 + 32.

What is in this set

The numbers in this set run from 1 to 100.
81% of them start above freezing.
19% of them start below freezing.
A careful solution takes 3 written steps on average.
The mistake this set invites most often, in 18% of the problems: the 32 was added before the multiplication.
Answers are a whole number.

Drawing 240 problems from this page produced 107 different ones, 45% — so a sheet of 20 will come back to a problem you have seen — there are only so many sensible ones of this kind.

The same skill, harder or easier

We would put this in front of a grade 7 class. That is our judgement, not a standard, and it is printed here so you can disagree with it. Everything else we put in that year.