HCF & LCM – Prime Factorisation – Card Complete & Match In this activity students work individually or in groups to match questions and answers. ‘Quick Cut’ – Choose the questions/slides you wish to use and delete others. Sets of questions can then be easily guillotined to save time. One-sheet sets of cards are also included for students to cut out themselves.

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 Match each Venn diagram with a Highest Common Factor or Lowest Common Multiple. Complete each diagram with a number in every box. 3

Half Answers

LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120 K 24 30 LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120 LCM = 120

LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240 J 80 48 3 LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240 LCM = 240

LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600 150 120 2 2 LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600 LCM = 600

LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162 I 81 LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162 LCM = 162

HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 L 36 7 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9 HCF = 9

HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10 D 30 50 HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10 HCF = 10

HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12 A 48 36 HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12 HCF = 12

HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15 G 60 5 3 HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15 HCF = 15

LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96 F 24 2 3 2 LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96 LCM = 96

LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140 E 2 2 5 LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140 LCM = 140

HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14 B 42 28 HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14 HCF = 14

HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35 105 5 2 HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35 HCF = 35

tom@goteachmaths.co.uk Questions? Comments? Suggestions? …or have you found a mistake!? Any feedback would be appreciated . Please feel free to email: tom@goteachmaths.co.uk