1.22 Metric units, time and money
9 exam questions worth 20 marks. Write your answer, open the mark scheme, then give yourself the marks you earned. Your answers are saved on this device.
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What is 2.5 kg in grams?
Choose one answer.
Correct Not quite: the answer is 2500 g
Mark scheme
B: 2500 g
Model answer
2500 g (B). Multiply by 1000: 2.5 × 1000 = 2500 g.
(a) Convert 450 cm to metres. (b) Convert 0.6 km to metres.
Mark scheme
B1: 4.5 m; B1: 600 m
Model answer
(a) 450 ÷ 100 = 4.5 m. (b) 0.6 × 1000 = 600 m.
(a) Convert 750 ml to litres. (b) Convert 3.2 litres to millilitres.
Mark scheme
B1: 0.75 litres; B1: 3200 ml
Model answer
(a) 750 ÷ 1000 = 0.75 litres. (b) 3.2 × 1000 = 3200 ml.
(a) Write 3:45 pm using the 24-hour clock. (b) Write 00:30 using the 12-hour clock.
Mark scheme
B1: 15:45; B1: 12:30 am
Model answer
(a) 15:45. (b) 12:30 am.
Work out the length of time from 09:50 to 14:25.
Mark scheme
M1: counts 10 minutes + 4 hours + 25 minutes; A1: 4 hours 35 minutes
Model answer
09:50 to 10:00 is 10 min; 10:00 to 14:00 is 4 hours; 14:00 to 14:25 is 25 min. Total 4 hours 35 minutes.
A film starts at 18:35 and lasts for 2 hours 40 minutes. At what time does it finish?
Mark scheme
M1: adds 2 hours and 40 minutes; A1: 21:15
Model answer
18:35 + 2 hours = 20:35. 20:35 + 40 minutes = 21:15.
The exchange rate is £1 = €1.15. Convert £80 into euros.
Mark scheme
M1: 80 × 1.15; A1: €92
Model answer
80 × 1.15 = €92.
A recipe needs 0.35 kg of butter. Butter is sold in packs of 125 g. How many packs are needed?
Mark scheme
B1: 0.35 kg = 350 g; M1: 350 ÷ 125 = 2.8; A1: 3 packs
Model answer
0.35 kg = 350 g. 350 ÷ 125 = 2.8, so 3 whole packs are needed.
A train leaves at 09:48 and arrives at 11:17. (a) Work out the time the journey takes. (b) The return train takes the same time and leaves at 14:50. At what time does it arrive?
Mark scheme
M1: counts 12 min + 1 h + 17 min; A1: 1 hour 29 minutes; M1: 14:50 + 1 h 29 min; A1: 16:19
Model answer
(a) 12 + 17 = 29 minutes and 1 hour: 1 hour 29 minutes. (b) 14:50 + 1 h 29 min = 16:19.
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