A guide to doing mental maths questions involving negative numbers that you might find in a KS2 Mental Maths Paper. It includes some practice questions

1. How To Do KS2 Maths SATs
Type Questions
(Mental Maths Paper)
Negative Numbers 1:
Changes In Temperature
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2. In a SATs Mental Maths Paper you might be asked to find out a
change in temperature that involves a negative number of degrees:

3. For example: The temperature was two degrees Celsius. It goes down
by seven degrees. Write down the new temperature.

4. For example: The temperature was two degrees Celsius. It goes down
by seven degrees. Write down the new temperature.
To find out the answer, firstly count back 2 degrees to get to zero.

5. For example: The temperature was two degrees Celsius. It goes down
by seven degrees. Write down the new temperature.
To find out the answer, firstly count back 2 degrees to get to zero.

6. For example: The temperature was two degrees Celsius. It goes down
by seven degrees. Write down the new temperature.
To find out the answer, firstly count back 2 degrees to get to zero.
Then count back another 5 degrees to get to - 5°C

7. For example: The temperature was two degrees Celsius. It goes down
by seven degrees. Write down the new temperature.
To find out the answer, firstly count back 2 degrees to get to zero.
Then count back another 5 degrees to get to - 5°C

8. Example 2: What temperature is 10 degrees lower than 4 degrees
Celsius?

9. Example 2: What temperature is 10 degrees lower than 4 degrees
Celsius?
To find out the answer, firstly count back 4 degrees to get to zero.

10. Example 2: What temperature is 10 degrees lower than 4 degrees
Celsius?
To find out the answer, firstly count back 4 degrees to get to zero.

11. Example 2: What temperature is 10 degrees lower than 4 degrees
Celsius?
To find out the answer, firstly count back 4 degrees to get to zero.
Then count back another 6 degrees to get to - 6°C

12. Example 2: What temperature is 10 degrees lower than 4 degrees
Celsius?
To find out the answer, firstly count back 4 degrees to get to zero.
Then count back another 6 degrees to get to - 6°C

13. Example 3: What temperature is 10 degrees warmer than - 2 degrees
Celsius?

14. Example 3: What temperature is 10 degrees warmer than - 2 degrees
Celsius?
To find out the answer, firstly count up 2 degrees to get to zero.

15. Example 3: What temperature is 10 degrees warmer than - 2 degrees
Celsius?
To find out the answer, firstly count up 2 degrees to get to zero.

16. Example 3: What temperature is 10 degrees warmer than - 2 degrees
Celsius?
To find out the answer, firstly count up 2 degrees to get to zero.
Then count up another 8 degrees to get to 8°C

17. Example 3: What temperature is 10 degrees warmer than - 2 degrees
Celsius?
To find out the answer, firstly count up 2 degrees to get to zero.
Then count up another 8 degrees to get to 8°C

18. Now try some of your own. Click to get the answers:

19. Now try some of your own. Click to get the answers:
a)The temperature was three degrees Celsius. It goes down by ten
degrees. Write down the new temperature.

20. Now try some of your own. Click to get the answers:
a)The temperature was three degrees Celsius. It goes down by ten
degrees. Write down the new temperature.
- 7°C

21. Now try some of your own. Click to get the answers:
a)The temperature was three degrees Celsius. It goes down by ten
degrees. Write down the new temperature.
- 7°C
b)The temperature was two degrees Celsius. It goes down by eleven
degrees. Write down the new temperature.

22. Now try some of your own. Click to get the answers:
a)The temperature was three degrees Celsius. It goes down by ten
degrees. Write down the new temperature.
- 7°C
b)The temperature was two degrees Celsius. It goes down by eleven
degrees. Write down the new temperature. - 9°C

23. Now try some of your own. Click to get the answers:
a)The temperature was three degrees Celsius. It goes down by ten
degrees. Write down the new temperature.
- 7°C
b)The temperature was two degrees Celsius. It goes down by eleven
degrees. Write down the new temperature. - 9°C
c)The temperature was five degrees Celsius. It goes down by fifteen
degrees. Write down the new temperature.

24. Now try some of your own. Click to get the answers:
a)The temperature was three degrees Celsius. It goes down by ten
degrees. Write down the new temperature.
- 7°C
b)The temperature was two degrees Celsius. It goes down by eleven
degrees. Write down the new temperature. - 9°C
c)The temperature was five degrees Celsius. It goes down by fifteen
degrees. Write down the new temperature. - 10°C

25. Now try some of your own. Click to get the answers:
a)The temperature was three degrees Celsius. It goes down by ten
degrees. Write down the new temperature.
- 7°C
b)The temperature was two degrees Celsius. It goes down by eleven
degrees. Write down the new temperature. - 9°C
c)The temperature was five degrees Celsius. It goes down by fifteen
degrees. Write down the new temperature. - 10°C
d)The temperature was three degrees Celsius. It goes down by seven
degrees. Write down the new temperature.

26. Now try some of your own. Click to get the answers:
a)The temperature was three degrees Celsius. It goes down by ten
degrees. Write down the new temperature.
- 7°C
b)The temperature was two degrees Celsius. It goes down by eleven
degrees. Write down the new temperature. - 9°C
c)The temperature was five degrees Celsius. It goes down by fifteen
degrees. Write down the new temperature. - 10°C
d)The temperature was three degrees Celsius. It goes down by seven
degrees. Write down the new temperature. - 4°C

27. Now try some of your own. Click to get the answers:
a)The temperature was three degrees Celsius. It goes down by ten
degrees. Write down the new temperature.
- 7°C
b)The temperature was two degrees Celsius. It goes down by eleven
degrees. Write down the new temperature. - 9°C
c)The temperature was five degrees Celsius. It goes down by fifteen
degrees. Write down the new temperature. - 10°C
d)The temperature was three degrees Celsius. It goes down by seven
degrees. Write down the new temperature. - 4°C
d)The temperature was seven degrees Celsius. It goes down by twenty
degrees. Write down the new temperature.

28. Now try some of your own. Click to get the answers:
a)The temperature was three degrees Celsius. It goes down by ten
degrees. Write down the new temperature.
- 7°C
b)The temperature was two degrees Celsius. It goes down by eleven
degrees. Write down the new temperature. - 9°C
c)The temperature was five degrees Celsius. It goes down by fifteen
degrees. Write down the new temperature. - 10°C
d)The temperature was three degrees Celsius. It goes down by seven
degrees. Write down the new temperature. - 4°C
d)The temperature was seven degrees Celsius. It goes down by twenty
degrees. Write down the new temperature. - 13°C

29. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?
16°C
-
b)What temperature is 15 degrees lower than 1 degree Celsius?
- 14°C
c)
What temperature is 5 degrees lower than - 3 degrees Celsius?
- 8°C
d)What temperature is nine degrees warmer than -6 degrees Celsius?
3°C
e)What temperature is ten degrees warmer than -4 degrees Celsius?
6°C
e)What temperature is six degrees warmer than -2 degrees Celsius?
4°C

30. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?

31. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?
16°C
-

32. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?
16°C
b)What temperature is 15 degrees lower than 1 degree Celsius?
-

33. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?
16°C
b)What temperature is 15 degrees lower than 1 degree Celsius?
- 14°C
-

34. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?
16°C
b)What temperature is 15 degrees lower than 1 degree Celsius?
- 14°C
c)
What temperature is 5 degrees lower than - 3 degrees Celsius?
-

35. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?
16°C
b)What temperature is 15 degrees lower than 1 degree Celsius?
- 14°C
c)
What temperature is 5 degrees lower than - 3 degrees Celsius?
- 8°C
-

36. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?
16°C
-
b)What temperature is 15 degrees lower than 1 degree Celsius?
- 14°C
c)
What temperature is 5 degrees lower than - 3 degrees Celsius?
- 8°C
d)What temperature is nine degrees warmer than -6 degrees Celsius?

37. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?
16°C
-
b)What temperature is 15 degrees lower than 1 degree Celsius?
- 14°C
c)
What temperature is 5 degrees lower than - 3 degrees Celsius?
- 8°C
d)What temperature is nine degrees warmer than -6 degrees Celsius?
3°C

38. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?
16°C
-
b)What temperature is 15 degrees lower than 1 degree Celsius?
- 14°C
c)
What temperature is 5 degrees lower than - 3 degrees Celsius?
- 8°C
d)What temperature is nine degrees warmer than -6 degrees Celsius?
3°C
e)What temperature is ten degrees warmer than -4 degrees Celsius?

39. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?
16°C
-
b)What temperature is 15 degrees lower than 1 degree Celsius?
- 14°C
c)
What temperature is 5 degrees lower than - 3 degrees Celsius?
- 8°C
d)What temperature is nine degrees warmer than -6 degrees Celsius?
3°C
e)What temperature is ten degrees warmer than -4 degrees Celsius?
6°C

40. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?
16°C
-
b)What temperature is 15 degrees lower than 1 degree Celsius?
- 14°C
c)
What temperature is 5 degrees lower than - 3 degrees Celsius?
- 8°C
d)What temperature is nine degrees warmer than -6 degrees Celsius?
3°C
e)What temperature is ten degrees warmer than -4 degrees Celsius?
6°C
f)
What temperature is six degrees warmer than -2 degrees Celsius?

41. Now try some of your own. Click to get the answers:
a)What temperature is 20 degrees lower than 4 degrees Celsius?
16°C
-
b)What temperature is 15 degrees lower than 1 degree Celsius?
- 14°C
c)
What temperature is 5 degrees lower than - 3 degrees Celsius?
- 8°C
d)What temperature is nine degrees warmer than -6 degrees Celsius?
3°C
e)What temperature is ten degrees warmer than -4 degrees Celsius?
6°C
f)
What temperature is six degrees warmer than -2 degrees Celsius?
4°C

42. That’s it for now......
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