Checking and securing understanding of negative numbers in context | Maths

Starter quiz

Numbers which are greater than zero are called __________ numbers.
- decimal
- fraction
- integer
- negative
- positive ✓
Select all the correct statements.
- 6 < 7 ✓
- 6 > 7
- 3.2 > 2.4 ✓
- 3.2 < 2.4
Alex thinks of a number. It is 4 away from 10. Select the numbers which Alex could be thinking of.
- 4
- 6 ✓
- 10
- 14 ✓
- 18
Laura borrows £27 from her mum. She pays her mum back £15. How much does Laura still owe her mum? £______
- '12' ✓
15 is halfway between two numbers. What could the two numbers be?
- 10 and 20 ✓
- 8 and 23
- 12 and 19
- 0 and 30 ✓
Complete the statement. ______ is halfway between 8 and 18.
- '13' ✓

Select all the integers.
- -3 ✓
- -3.3
- 0 ✓
- 0.33
- 33 ✓
Select all of the correct statements.
- -3 < -5
- -5 > - 3
- -3 > -5 ✓
- -4 > -1
- -4 < -1 ✓
Starting with the lowest temperature, put these temperatures in order from coldest to warmest.
- 1
  
  ⇔
  
  -5 $^\circ$ C
- 2
  
  ⇔
  
  -2 $^\circ$ C
- 3
  
  ⇔
  
  -1 $^\circ$ C
- 4
  
  ⇔
  
  0 $^\circ$ C
- 5
  
  ⇔
  
  2 $^\circ$ C
- 6
  
  ⇔
  
  7 $^\circ$ C
The temperature in Quebec is -12 $^\circ$ C. It is 5 $^\circ$ C warmer in Manchester. What is the temperature in Manchester?
- -17 $^\circ$ C
- -7 $^\circ$ C ✓
- -5 $^\circ$ C
- 5 $^\circ$ C
- 7 $^\circ$ C
Andeep has a balance of £2.50 at the school canteen. He buys a sandwich for £1.95, some grapes for 85p and some fruit juice for £1.05. What is Andeep's new balance?
- -£3.85
- -£1.35 ✓
- £1.35
- £3.85
A submarine is 250 metres below sea level. The submarine rises 120 metres and then dives down 330 metres. The submarine is now ______ metres below sea level.
- '460' ✓

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That the difference between 3 & -9 is 6 and not 12.

In the early stages of the negative numbers work the use of number lines to highlight misconceptions can be very powerful.

Integer - An integer is any positive or negative whole number or zero. E.g. -2, 0, 153 are all examples of integers.