Maths Magic Horseplay - PowerPoint PPT Presentation

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Title:

Maths Magic Horseplay

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Subtract 4 from this answer. You then ask for the answer. You always subtract 21 from this answer and the result will be a two digit number. ... – PowerPoint PPT presentation

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Title: Maths Magic Horseplay


1
Maths Magic Horseplay
2
3 and 7
3 doubled is 6
Double one of these.
Think of two 1 digit numbers.
6 5 11
Add 5 to the answer.
11 X 5 55
Multiply this answer by 5
55 7 62
Add on the second of your original numbers
62 4 58
Subtract 4
3
What is your answer?
58
4
How did you do that?
Let me go and Ill tell you!
The numbers that you first thought of were 3 and 7
5
Ill try this out on my friends
58 21 37
You always subtract 21. The two digits of the
number are the numbers
6
  • Follow these steps
  • Ask someone to think of two 1 digit numbers
  • Double one of these number
  • Add on five to this number
  • Multiply your answer by 5
  • Add on the second number of your original two
    numbers
  • Subtract 4 from this answer
  • You then ask for the answer
  • You always subtract 21 from this answer and the
    result will be a two digit number.
  • The digits of this number are the persons two
    original numbers

7
And they all lived happily ever after!
The running horse on the first slide and duck
with wriggling fish are courtesy of clipart
warehouse www.clipart.co.uk The clever horse and
rider are courtesy of Corel Clipart www.corel.com
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