SME
Grade 4 Science · Problem type
How much a solar oven warmed up
Use this for “How many degrees did the solar oven warm up in the sun?”
Diagram
Temperature at the start: 70 °F
Temperature after 30 minutes: 130 °F.
Temperature after 30 minutes is 60 °F warmer than temperature at the start.
This is an example. Type your own values to start a new problem.
Temperature after 30 minutes (°F)
−
Temperature at the start (°F)
=
Rise (°F)
Formulas
130 − 70 = 60
Temperature after 30 minutes − temperature at the start = rise
Assumptions
•
A solar oven is a box with a clear lid. Light from the sun goes in and becomes heat.
•
Read the thermometer at the start and again after 30 minutes in the sun.
•
The rise is the temperature after, minus the temperature at the start.
Step-by-step
WE KNOW
Temperature at the start: 70 °F
Temperature after 30 minutes: 130 °F
FIND
rise
Step 1 · Find rise
130 − 70 = ?
Temperature after 30 minutes − temperature at the start = rise
Take the start temperature away from the temperature after 30 minutes.
0
13
1
3
0
−
7
0
6
0
Rise = 60 °F
Check
Put the numbers back in. Both sides should match.
130 − 70 = 60 ✓
Topic check
See what you know: 5 questions on this topic
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