Temperature · Usually met around P3
Temperature
First see how many degrees a small mark is.
How to do it
Method
First see how many degrees a small mark is
3 marks above 20 at 2 degrees each: 20 + 6 = 26 °C
Another way
Count down from above
30 − 2 − 2 = 26
In full
Temperature is measured in degrees Celsius (°C): the bigger the number, the hotter. To read a thermometer, find the nearest numbered mark below the top of the liquid, then work out what each small mark is worth: 5 marks between numbers 10 degrees apart means 2 degrees a mark; count up from that number. To find how much the temperature rose or fell, take the lower temperature from the higher. Or count down from the number above the liquid, or count along a number line from one temperature to the other.
Worked examples
Have a go first, then open each one for the answer and the working.
Example 1
The temperature is 23 °C in the morning and rises to 29 °C by noon. By how many degrees did it rise?
Show the answer and working
Answer: 6 degrees
Higher take away lower: 29 − 23 = 6 degrees.
Example 2
Which is most likely the temperature on a summer afternoon in Hong Kong?
- A. 100 °C
- B. 72 °C
- C. 32 °C
- D. 12 °C
Choose the right answer
Show the answer and working
Answer: C. 32 °C
A Hong Kong summer afternoon is about 30 °C: 32 °C fits best.
Example 3
It was 12 °C in the morning; the picture shows the afternoon temperature. By how many degrees did it rise?
Show the answer and working
Answer: 23 degrees
Read the thermometer first: 35 °C in the afternoon; then take away: 35 − 12 = 23 degrees.
Practise it in the game →Temperature · Free to start, unlimited questions, no download