Number, NAPX-L4-CA05

Question

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Worked Solution

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Variant 0

DifficultyLevel

483

Question

At midday, the temperature is 30°C.

At midnight, the temperature is 6°C.

Which calculation below can be used to work out how many degrees cooler it is at midnight than at midday?

Worked Solution

Degrees cooler = 30 −- 6

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
At midday, the temperature is 30°C. At midnight, the temperature is 6°C. Which calculation below can be used to work out how many degrees cooler it is at midnight than at midday?
workedsolution
Degrees cooler = 30 $-$ 6
correctAnswer
30 $-$ 6

Answers

Is Correct?Answer
x

30 ÷\div 6

x

6 −- 30

x

30 + 6

✓

30 −- 6

Variant 1

DifficultyLevel

485

Question

At 6 am the temperature is 3°C.

At 2 pm the temperature is 27°C.

Which calculation below can be used to work out how many degrees warmer it is at 2 pm than at 6 am?

Worked Solution

Degrees warmer = 27 −− 3

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
At 6 am the temperature is 3°C. At 2 pm the temperature is 27°C. Which calculation below can be used to work out how many degrees warmer it is at 2 pm than at 6 am?
workedsolution
Degrees warmer = 27 $−$ 3
correctAnswer
27 $-$ 3

Answers

Is Correct?Answer
x

3 + 27

x

3 −- 27

x

27 ÷\div 3

✓

27 −- 3

Variant 2

DifficultyLevel

503

Question

At 6 am the temperature in San Diego was 12.7°C.

At 2 pm it was 7.5°C warmer.

At 8 pm it was 9.6°C cooler than at 2 pm.

What was the temperature at 8 pm?

Worked Solution
Temperature at 8 pm = 12.7 + 7.5 −- 9.6
= 10.6°\degreeC

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
At 6 am the temperature in San Diego was 12.7°C. At 2 pm it was 7.5°C warmer. At 8 pm it was 9.6°C cooler than at 2 pm. What was the temperature at 8 pm?
workedsolution
>| | | | --------------------: | -------------- | | Temperature at 8 pm| = 12.7 + 7.5 $-$ 9.6 | | |= 10.6$\degree$C |
correctAnswer
10.6$\degree$C

Answers

Is Correct?Answer
x

9°\degreeC

✓

10.6°\degreeC

x

14.8°\degreeC

x

29.8°\degreeC

Variant 3

DifficultyLevel

489

Question

Karen arrived home and turned on the heater.

Before turning on the heater, the temperature in the room was –5°C.

After fifteen minutes, the temperature in the room was 12°C.

What was the change in temperature in the room?

Worked Solution
Change in temperature = 12 − (−5)−\ (−5)
= 17°C (increase)

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
question
Karen arrived home and turned on the heater. Before turning on the heater, the temperature in the room was –5°C. After fifteen minutes, the temperature in the room was 12°C. What was the change in temperature in the room?
workedsolution
>| | | | --------------------: | -------------- | | Change in temperature | = 12 $−\ (−5)$ | | | = 17°C (increase) |
correctAnswer
increase of 17°C

Answers

Is Correct?Answer
✓

increase of 17°C

x

decrease of 17°C

x

increase of 7°C

x

decrease of 7°C

Tags

  • nap_ca