Percentages
term 2 week 8
What is a percentage?
a percent is a ratio whose second term 100. Percent means parts per hundred. The word comes from the Latin phase per centum, which means per hudred. In mathematics, we use the symbol % for percentage.
Where could you find a percentage in an everyday life?
VAT and other such as sales tax. Calculating how much tip to give at a restaurant.
Percent eg.
25% = 25/100 = 1/4 = 0.25
Remaining 75%
5% = 5/100 = 1/20 = 0.05
Remaining 70%
24% = 24/100 = 0.24
Remaining 46%
23% = 23/100 = 0.23
Remaining 23%
3% = 3/100 = 0.03
Remaining 20%
20% = 20/100 = 0.2
Remaining 0%
Tuesday Big maths
What I did today.
The connections i found between fractions, decimals and percentages. The six things I had written down, eg. 35% = 35/100 = 0.35
Plus we got six different colours and coloured in different percentages in the 1 hundred grid and write the key down below which would look something like, 5% = 5/100 = 1/20 = 0.05
Wednesday maths
We learnt where to find simple percentages and accuarately find percentages with or without using technology. eg.
How to find 50%
1/2
0.5 x 36 = 18
2÷
How to find 25%
1/4
0.25 x 36 = 9
4÷
How to find 10%
1/10
0.1 x 36 = 3.6
10÷
How to find 5%
5/100
0.05 x 36 = 1.8
How to find 2%
0.02 x 36 = 0.72
How to find 1%
0.01 x 36 = 0.36