1. Lowest Common Multiples – Listing – Higher – GCSE Questions
These questions are the same format as previous GCSE exams.
COPY means they use the exact same numbers as the original GCSE question.
Otherwise, they are clone questions using different numbers.
The worksheets are provided in a variety of sizes.

2. Printing To print handouts from slides -
Select the slide from the left. Then click:
File > Print > ‘Print Current Slide’
To print multiple slides -
Click on a section title to highlight all those slides,
or press ‘Ctrl’ at the same time as selecting slides to
highlight more than one. Then click:
File > Print > ‘Print Selection’
To print double-sided handouts -
Highlight both slides before using ‘Print Selection’.
Choose ‘Print on Both Sides’ and ‘Flip on Short Edge’.

3. GCSE GCSE GCSE GCSE Edexcel Higher: June 2018 Paper 3, Q10
Here are three lamps.
Lamp A flashes every 30 seconds.
Lamp B flashes every 75 seconds.
Lamp C flashes every 100 seconds.
The three lamps start flashing at the same time.
How many times in one hour will the three lamps flash at the same time?
Lamp A
Lamp B
Lamp B 1
Here are three lamps.
Lamp A flashes every 30 seconds.
Lamp B flashes every 75 seconds.
Lamp C flashes every 100 seconds.
The three lamps start flashing at the same time.
How many times in one hour will the three lamps flash at the same time?
Lamp A
Lamp B
Lamp B
(Total for Question 1 is 3 marks)
(Total for Question 1 is 3 marks)
GCSE
GCSE
Edexcel Higher: June 2018 Paper 3, Q10
Edexcel Higher: June 2018 Paper 3, Q10 1
Here are three lamps.
Lamp A flashes every 30 seconds.
Lamp B flashes every 75 seconds.
Lamp C flashes every 100 seconds.
The three lamps start flashing at the same time.
How many times in one hour will the three lamps flash at the same time?
Lamp A
Lamp B
Lamp B 1
Here are three lamps.
Lamp A flashes every 30 seconds.
Lamp B flashes every 75 seconds.
Lamp C flashes every 100 seconds.
The three lamps start flashing at the same time.
How many times in one hour will the three lamps flash at the same time?
Lamp A
Lamp B
Lamp B
(Total for Question 1 is 3 marks)
(Total for Question 1 is 3 marks)

5. GCSE Edexcel Higher: June 2018 Paper 3, Q10 1 Here are three lamps.
Lamp A flashes every 30 seconds.
Lamp B flashes every 75 seconds.
Lamp C flashes every 100 seconds.
The three lamps start flashing at the same time.
How many times in one hour will the three lamps flash at the same time?
Lamp A
Lamp B
Lamp B
(Total for Question 1 is 3 marks)

6. GCSE Find LCM of 30, 75, 100 300 seconds = 5 minutes
Edexcel Higher: June 2018 Paper 3, Q10 1
Here are three lamps.
Lamp A flashes every 30 seconds.
Lamp B flashes every 75 seconds.
Lamp C flashes every 100 seconds.
The three lamps start flashing at the same time.
How many times in one hour will the three lamps flash at the same time?
Lamp A
Lamp B
Lamp B
Find LCM of 30, 75, 100
300 seconds
= 5 minutes
100? = NO, 30, 60, 90
200? = NO, 75, 150, 225
300? = works for 30 and 75
60 minutes ÷ 5
= 12 12
(Total for Question 1 is 3 marks)

7. tom@goteachmaths.co.uk Questions? Comments? Suggestions?
…or have you found a mistake!?
Any feedback would be appreciated .
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