Calculate a fraction of a whole number

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• Calculate a fraction of a whole number
• What, for example, is ¾ of 20?
• or
• What is 28 of 78?

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How to work out a fraction of a whole number.
What is ¾ of 8? Divide the amount by the bottom
? 8 4 2 then multiply this answer by the top
? 2 x 3 6
Divide by the bottom then times by the top
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Calculate a percentages of a number
What is 28 of 78? Change 28 into a decimal ?
28 100 0.28 Change of into Re-write 28
of 78 as 0.28 78 21.84 and workout the answer
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TEST YOURSELF

• 23 of 32
• 77 of 36
• 80 of 35
• 13 of 142
• 22 of 60
• 35 of 70
• 6 of 220
• 17 of 150
• 12 of 20
• 10.  27 of 30

• 7.36
• 27.72
• 28
• 18.46
• 13.2
• 24.5
• 13.2
• 25.5
• 2.4
• 10.  8.1