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Naxi’s Notes
Naxi’s Notes
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Page 1
Naxi’s Notes
What is HCF?
HCF stands for Highest Common Factor
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HCF means the highest number which is a factor of 2 different numbers
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15: 1, 3, 5, 15
75: 1, 3, 5, 15, 25, 75
3 and 5 are common factors, but 15 is the highest common factor
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They have to divide up the sweets into small trays with equal number of sweets; each tray
containing either orange-flavoured or grape-flavoured sweets only
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Find the HCF of 25 and 60
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Find the HCF of 35 and 80
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Martin is pasting pieces of square coloured paper of equal size onto a board measuring
72 cm by 90 cm
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(2
marks)
Answers are at the bottom of the booklet
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5
2
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18 cm
Answers are at the bottom of the booklet