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Num
21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.
Fractions Decimals Fractions Decimals PercentagesPercentages
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.com Conversion between % Fractions and Decimals
Finding a Percentage with a Calculator
Percentage Rising
Percentage Fall
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21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.
Starter QuestionsStarter Questionsw
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14
1. Calculate 45.6 x 7
2. Write the fraction as a percentage
3. Calculate 2 + 3 4
4. 4 jars of sweets cost £2.40.
How much for 3 jars.
Num
21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.
Percentagesw
ww
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srevis
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.com Learning IntentionLearning Intention Success CriteriaSuccess Criteria
1.1. To know how to convert a To know how to convert a fraction / decimal to a fraction / decimal to a percentage.percentage.
1. We are learning to convert a fraction / decimal to a percentage and use them in context.
2.2. Be able to compare Be able to compare percentages in context.percentages in context.
Comparing Percentages
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21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.ww
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PercentagesPercentagesComparing Percentages
Fraction Decimal Percentage
Do the division x 100
3
40.75 75%
Do the division x 100
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21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.
Convert these percentages to fraction and simply
PercentagesPercentages
15
20100
20%
34
75100
75%
35
60100
60%
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21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.ww
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.com Write the following percentages as a fraction.
17% =
81% =
PercentagesPercentagesComparing Percentages
17100
81100
40 2100 5
40% =
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21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.
Covert these fractions to percentages
PercentagesPercentages
110
1 10 100 10%
320
3 20 100 15%
45
4 5 100 80%
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21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.ww
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.com Write the following fractions as percentages.
= 27%
= 29%
= 15%
58 200 100
27 100 100
3÷20 100
PercentagesPercentagesComparing Percentages
27100
320
58200
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21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.ww
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Paul scored :24 out of 30 in English and 36 out of 40 in Maths.
By finding the percentage score for each, which is his
best subject ?
24
30 100 =
PercentagesPercentages
36
40 100 =
English Maths
80% 90%
Comparing Percentages
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21 Apr 202321 Apr 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Now try Lifeskills
Ex 1Ch3 (page 23)
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PercentagesPercentagesComparing Percentages
Num
21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.
Starter Questionsw
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.com 1. Find the area and perimeter of a square
with length 3 cm.
2. 4.56 + 2.36 - 1.2
3. Find an equivalent fraction
with denominator 100 for .1
20
Num
21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.
Percentagesw
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.com Learning IntentionLearning Intention Success CriteriaSuccess Criteria
1.1. To know how to calculate a To know how to calculate a percentage using a percentage using a calculator.calculator.
1. We are learning to calculate a percentage of a quantity using a calculator.
2.2. Show working.Show working.
With a Calculator
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21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.
Remember money
2 decimal places
Find 17% of £450
PercentagesPercentagesof
means multiple
17 450100
17 100 450
£ 76.50
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With a Calculator
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21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.
Remember !! money
2 decimal places
Find 4% of £70
PercentagesPercentages
4 70100
4 100 70
£ 2.80
With a Calculator
Num
21 Apr 202321 Apr 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Now try Lifeskills
Ex 2Ch3 (page 24)
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PercentagesPercentagesWith a Calculator
21 Apr 202321 Apr 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Starter Starter QuestionsQuestions
Q1. Write these perecentages as decimals.
(a) 75% (b) 12.5% (c) 60%
Q2. Find 30% of £ 400.
Q3. Find the area of the shape.
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8cm
10cm
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21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.ww
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1.1. Understand term Understand term percentages rise.percentages rise.
1. We are learning percentages rise using context.
2.2. Calculate percentage rise.Calculate percentage rise.
Percentage RisePercentage Rise
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Created by Mr. LaffertyCreated by Mr. LaffertyMaths DeptMaths Dept
Percentage RisePercentage Risew
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5 260 = 13
100
260 13 = 273July Total Hours =
ExampleExample Total hours of sunshine in June was 260.otal hours of sunshine in June was 260.The total for July was 5% higher than June..The total for July was 5% higher than June..What is the total hours of sunshine in July.What is the total hours of sunshine in July.
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Created by Mr. LaffertyCreated by Mr. LaffertyMaths DeptMaths Dept
Percentage RisePercentage Risew
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15 40 =
100
40 6 = 46Total Points =
ExampleExample Last year a football team got 40 points in the League. This year they got 15% more.How many points did they get.How many points did they get.
6
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21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.
Now try Lifeskills
Ex 3Ch4 (page 26)
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Percentage RisePercentage Rise
21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.
Starter Questionsw
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35
100
1. Calculate 88.37x 9
2. Write the fraction as a percentage
3. Find 60% of 900
4. 5 jars of sweets cost £6.50.
How much for 4 jars.
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21 Apr 202321 Apr 2023 Compiled by Mr. Lafferty Maths Dept.Compiled by Mr. Lafferty Maths Dept.
Percentage Fall (Decrease)
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1.1. Understand terms Understand terms percentage fall.percentage fall.
1. We are learning percentage fall in context.
2.2. Calculate percentages fall.Calculate percentages fall.
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Created by Mr. LaffertyCreated by Mr. LaffertyMaths DeptMaths Dept
Percentage Fall (decrease)
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ExampleExample
In a sale the cost of a jumper is reduced by 10%.In a sale the cost of a jumper is reduced by 10%.What is the sale price of the jumper.What is the sale price of the jumper.
10 100 35 =
Original Price£3535 3 50 = £31.50.Sale Price =
£3.50
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Created by Mr. LaffertyCreated by Mr. LaffertyMaths DeptMaths Dept
Percentage Fall (decrease)
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ExampleExampleLast year a house was valued at £90000.Last year a house was valued at £90000.This year the price dropped by 15%.This year the price dropped by 15%.What was the price this year ?What was the price this year ?
9 90000 =
100
90000 8100 = £81900Price =
£8100
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21 Apr 202321 Apr 2023 Created by Mr. Lafferty Maths Dept.Created by Mr. Lafferty Maths Dept.
Now try lifeskills
Ex 4Ch3 (page 29)
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PercentagesPercentagesComparing Percentages
Have you updated your Learning
Log ?
Are you on Target ?I can ?