The temperature was -2 degrees Celsius in the early morning. By noon it fell by 5 degrees. Work out the temperature at noon.
(Total for Question 3 is 1 mark)
4
Aisha has £12 in her bank account. She withdraws £30. What is her new balance?
(Total for Question 4 is 1 mark)
5
What is the difference between -4 and 6? (Give the distance between the numbers.)
(Total for Question 5 is 1 mark)
6
Order these numbers from smallest to largest: -2, -11, 3, 0, -1
(Total for Question 6 is 2 marks)
7
The temperature in a town is -3 degrees. It rises by 9 degrees, then falls by 15 degrees. Work out the final temperature.
(Total for Question 7 is 2 marks)
8
Sam's bank balance is -£12.
(a)He pays in £20. What is his new balance?(1)
(b)He then withdraws £5. What is the balance now?(1)
(Total for Question 8 is 2 marks)
9
Calculate -3 - (-8).
(Total for Question 9 is 1 mark)
10
What is the difference in temperature between -6 degrees and -14 degrees?
(Total for Question 10 is 1 mark)
11
A weather station records -10 degrees. During the day it warms by 4 degrees and then by a further 7 degrees. What is the temperature at the end of the day?
(Total for Question 11 is 2 marks)
12
A pond's temperature is reduced by 5 degrees and becomes -2 degrees. What was the temperature before the reduction?
(Total for Question 12 is 2 marks)
13
Which number is larger: -0.5 or -1.0?
A) -1.0
B) -0.5
C) they are equal
D) cannot be compared
E) 0
(Total for Question 13 is 1 mark)
14
Order these numbers from smallest to largest: -1.2, -0.03, 0, 0.5, -0.99
(Total for Question 14 is 2 marks)
15
Mia owes £4 and Noah has £7. What is their combined balance?
(Total for Question 15 is 1 mark)
16
The highest recorded temperature one day was -2 degrees and the lowest was -9 degrees. What is the temperature range that day?
(Total for Question 16 is 1 mark)
17
Complete the sequence: -3, -1, 1, 3, ____.
(Total for Question 17 is 1 mark)
18
A car thermometer shows 5 degrees. It falls by 12 degrees, then rises by 6 degrees. Work out the final temperature.
(Total for Question 18 is 2 marks)
Mark scheme · EP.M107 Negative Numbers in Context
Question 1
B1 correct option C (-7) cao
Answer: C) -7 (smallest number on the list).
Question 2
B1 -2 cao
Answer: -2
Question 3
B1 -7 degrees C cao
Answer: -7 degrees C
Question 4
B1 -£18 cao
Answer: -£18 (an overdraft of £18)
Question 5
B1 10 cao
Answer: 10
Question 6
M1 identify smallest and largest correctly oe (smallest = -11, largest = 3)
A1 fully correct order: -11, -2, -1, 0, 3 cao
Answer: -11, -2, -1, 0, 3
Question 7
M1 correct intermediate step seen ( -3 + 9 = 6 or equivalent)
A1 final answer -9 cao
Answer: -9 degrees C
Question 8
(a) B1 £8 cao
(a) Answer: £8
(b) B1 £3 cao
(b) Answer: £3
Question 9
B1 5 cao
Answer: 5
Question 10
B1 8 cao
Answer: 8
Question 11
M1 correct intermediate step seen ( -10 + 4 = -6)
A1 final answer 1 degree C cao
Answer: 1 degree C
Question 12
M1 correct equation or method seen (x - 5 = -2 or x + (-5) = -2)
A1 3 degrees C cao
Answer: 3 degrees C
Question 13
B1 correct option B (-0.5) cao
Answer: B) -0.5
Question 14
M1 identify smallest and largest correctly oe (smallest = -1.2, largest = 0.5)
A1 fully correct order: -1.2, -0.99, -0.03, 0, 0.5 cao
Answer: -1.2, -0.99, -0.03, 0, 0.5
Question 15
B1 £3 cao
Answer: £3
Question 16
B1 7 degrees cao
Answer: 7 degrees
Question 17
B1 5 cao
Answer: 5
Question 18
M1 correct intermediate step seen (5 - 12 = -7 or equivalent)