bubble percentage method - Skills · PDF fileThe Bubble Method ‐ for finding percentages of...
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The Bubble Method ‐ for finding percentages of any number. This resource kindly contributed by John Thompson, Devon Adult & Community Learning. Search for John on www.skillsworkshop.org A separate Smart Notebook version of this template is also available on skillsworkshop.org. N2/L2.8 (L1.9) find (simple) percentage parts of quantities and measurements. L1-2 Functional Maths - understand and use equivalencies between (common) fractions, decimals and percentages. This resource has been adapted from one found on the TES Website (and extra information has been added) http://www.tes.co.uk/teaching-resource/bubble-method-to-work-out-the-percentage-of-different-amounts-6020692/ =100% =5% =50% =25% =10% =1% ÷ 10 ÷ 10 ÷2 ÷ 10 ÷2 ÷2 800 200 400 40 80 8 A Bubble method Find 30% of 800 From the bubbles find: 25% = 200 5% = 40 Therefore 30% = 240 How to use your own percentage bubble (blank provided on next page) 1 Start at bubble A and enter a value 2 Work your way around the bubbles following the arrows and enter the values Note: The ÷ 10 calculations are horizontal and the ÷ 2 calculations are vertical. Traditional method Find 30% of 800 30 x 800 100 = 240 Another method Find 30% of 800 100% = 800 (÷ both by 10) 10% = 80 (x both by 2) 20% = 160 Therefore 30% = 80 + 160 = 240
Transcript of bubble percentage method - Skills · PDF fileThe Bubble Method ‐ for finding percentages of...
The Bubble Method ‐ for finding percentages of any number.
This resource kindly contributed by John Thompson, Devon Adult & Community Learning. Search for John on www.skillsworkshop.org A separate Smart Notebook version of this template is also available on skillsworkshop.org. N2/L2.8 (L1.9) find (simple) percentage parts of quantities and measurements. L1-2 Functional Maths - understand and use equivalencies between (common) fractions, decimals and percentages.
This resource has been adapted from one found on the TES Website (and extra information has been added)
http://www.tes.co.uk/teaching-resource/bubble-method-to-work-out-the-percentage-of-different-amounts-6020692/
=100%
=5% =50%
=25%
=10% =1%
÷ 10 ÷ 10
÷ 2
÷ 10
÷ 2
÷ 2
800
200
400 40
80 8
A
Bubble method
Find 30% of 800
From the bubbles find:
25% = 200
5% = 40
Therefore 30% = 240
How to use your own percentage bubble
(blank provided on next page)
1 Start at bubble A and enter a value 2 Work your way around the
bubbles following the arrows and enter the values
Note:
The ÷ 10 calculations are horizontal and
the ÷ 2 calculations are vertical.
Traditional method
Find 30% of 800
30 x 800
100
= 240
Another method
Find 30% of 800
100% = 800 (÷ both by 10)
10% = 80 (x both by 2)
20% = 160
Therefore 30% = 80 + 160
= 240
The Bubble Method ‐ for finding percentages of any number.
This resource kindly contributed by John Thompson, Devon Adult & Community Learning. Search for John on www.skillsworkshop.org A separate Smart Notebook version of this template is also available on skillsworkshop.org. N2/L2.8 (L1.9) find (simple) percentage parts of quantities and measurements. L1-2 Functional Maths - understand and use equivalencies between (common) fractions, decimals and percentages.
=100%
=5% =50%
=25%
=10% =1%
÷ 10 ÷ 10
÷ 2
÷ 10
÷ 2
÷ 2
