Example 1 · level 1
At night the temperature in Manali was 12 °C. By morning it had fallen by 15 °C. What was the morning temperature (in °C)?
Show solution
- 12 − 15 = −3.
- The morning temperature was −3 °C.
Answer: -3
CLASS 6 MATHS · INTEGERS
Integers in daily life
Use + for up, above, gain or deposit and − for down, below, loss or withdrawal. Then add on a number line.
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Worked examples
Example 2 · level 2
At night the temperature in Leh was 8 °C. By morning it had fallen by 15 °C. What was the morning temperature (in °C)?
Show solution
- 8 − 15 = −7.
- The morning temperature was −7 °C.
Answer: -7
Example 3 · level 3
On a winter day in Leh the highest temperature was 10 °C and the lowest was −9 °C. What is the difference between them (in °C)?
Show solution
- 10 − (−9) = 10 + 9 = 19.
Answer: 19