Learn-Apply-Practise
Num eracy Worksheet
Name …………….….…..……..…..
Negative Temperatures
Date ………………………….…..…
Negative Numbers Practise
Remember
The boiling point of water is 100oC. The freezing point of water is 0oC.
A temperature below freezing is written as a negative number. For example, on a cold night the
temperature might drop as low as -5oC.
Now Try These Problems
1.
The freezer cabinet in Tesco's was supposed to be set at-18oC but after a power cut the
temperature had risen by 9 degrees. Which of these two temperatures show how cold the
freezer is now.
a.
2.
-9oC or -27oC
______________________________________
What would the thermometer on the right read if:
a.
the temperature dropped by 6oC ________________________
b.
and then rose by 3 oC _________________________________
3.
If the temperature starts at 4oC and drops by 15oC. What is the final
temperature? ___________________________________________
4.
Here are the minimum and maximum daily temperatures in January
in some European cities.
o
5.
6.
C
Min
Max
Oslo
-9
3
Moscow
-18
-1
Paris
-1
12
London
-2
11
Madrid
0
17
Athens
-2
18
ooC
C
10
0
-10
-20
a.
Where was it coldest? ___________________________________________________
b.
In which city or cities did the temperature not fall below zero? ___________________
c.
Was it colder in Paris or London? __________________________________________
Put these temperatures in order coldest first
a.
5oC, -11oC, 7oC, -10oC, -5oC, 0oC __________________________________________
b.
-18oC, -32oC, 37oC, -1oC, 0oC, -20oC _______________________________________
Put these temperatures in order hottest first
a.
20oC, -15oC, 7oC, -20oC, -3oC, 60oC ________________________________________
b.
-38oC, -32oC, 22oC, -4oC, 7oC, 15oC ________________________________________
n1.2 negative temperatures.doc/Nov 2003
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N1/L1.2
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Learn-Apply-Practise
8
These are the temperatures in York and Rome on
a7.day in winter.
Belfast
Madrid
How many degrees colder is it in Belfast than Madrid?
How many degrees colder is it in York than in Rome?
8.
8a
On another day the temperature in Belfast is 4°c. Madrid is 7
1 mark
degrees colder than Belfast.
On another day, the temperature in York is 4OC
What is the temperature in Madrid? ______________° C
Rome is 7 degrees colder than York.
What is the temperature in Rome?
8b
1 mark
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13
Learn-Apply-Practise
Here are two thermometers.
They show two different temperatures.
9. Here are two thermometers.
°C
20
0
–5
5
10
10
–10
–15
0
°C
15
What is the difference between the two?
What is the difference between the two temperatures?
degrees
13
1 mark
10. Jack’s freezer is faulty. It is constantly misreading the
temperature by 15°C. The temperature is reading 5°C, but Jack
knows that is actually much colder. What is the correct
temperature?
13
37 36 35 34 33
KS2 MathsTestA_275355.indd
13 32
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31 30 29 28 27 26 25 24 23 22 21 20
Total out of 4
18 17 16 15 14 13 12 11 10
9
8
7
36
5
4
3 6/2/07
2
15:19:41 pm
Remember
Learn-Apply-Practise
o
o
The boiling point of water is 100 C. The freezing point of water is 0 C.
Answers A temperature below freezing is written as a negative number. For example, on a cold night the
temperature might drop as low as -5oC.
Now Try These Problems
1.
The freezer cabinet in Tesco's was supposed to be set at-18oC but after a power cut the
temperature had risen by 9 degrees. Which of these two temperatures show how cold the
freezer is now.
a.
2.
ooC
C
-9oC or -27oC -9oC
What would the thermometer on the right read if:
o
a.
the temperature dropped by 6 C -10 C
b.
and then rose by 3 oC -7oC
0
3.
If the temperature starts at 4oC and drops by 15oC. What is the final
temperature? -11oC
4.
Here are the minimum and maximum daily temperatures in January
in some European cities.
o
5.
6.
10
o
C
Min
Max
Oslo
-9
3
Moscow
-18
-1
Paris
-1
12
London
-2
11
Madrid
0
17
Athens
-2
18
a.
Where was it coldest? Moscow
b.
In which city or cities did the temperature not fall below zero? Madrid
c.
Was it colder in Paris or London? London
-10
-20
Put these temperatures in order coldest first
a.
5oC, -11oC, 7oC, -10oC, -5oC, 0oC -11oC, -10oC, -5oC, 0oC, 50C, 7oC
b.
-18oC, -32oC, 37oC, -1oC, 0oC, -20oC -32oC, -20oC, -18oC, -1oC, 0oC, 37oC
Put these temperatures in order hottest first
a.
20oC, -15oC, 7oC, -20oC, -3oC, 60oC 60oC, 20oC, 7oC, -3oC, -15oC, -20oC
b.
-38oC, -32oC, 22oC, -4oC, 7oC, 15oC 22oC, 15oC, 7oC, -4oC, -32oC, -38oC
n1.2 negative temperatures - answers.doc/Nov 2003
N1/L1.2
7. 5°c
8. -3°c
9.18°c
10.-10
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