S3_Fractions_and_Percentages

S3_Fractions_and_Percentages - S3 Starter Questions Q1....

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Unformatted text preview: S3 Starter Questions Q1. 34.5 + 0.6 + 5 Tidyup the expression St. Andrew's Secondary Q2. 6 w 4 r +4 w+9 r Find y wh e n y + 6 = 2 5 Q3. Q4. I f p = 4 , q = 5 , r = 3 Find pq - r 2 Created by Mr. Lafferty Maths Dept S3 Recap Put over 100 0.3 3 10 3.0 St. Andrew's Secondary 30% Put over 100 30 3 = 100 10 0.7 7 10 7.0 0. 3 70% 70 7 = 100 10 Created by Mr. Lafferty Maths Dept 0.7 S3 How to find % of a quantity using a calculator example 50 1 = = 0. 5 100 2 Find 50% of 300 St. Andrew's Secondary Step 1 : Convert % to a decimal 0. 5 of 300 Step 2 : 0. 5 300 of means x Step 3 : Do sum 0. 5 300 = 150 Calculator Keys 5 0 1 0 0 x 3 0 0 = 150 Created by Mr. Lafferty Maths Dept S3 How to find % of a quantity using a calculator example 40 4 = = 0. 4 100 10 Find 40% of 480 St. Andrew's Secondary Step 1 : Convert % to a decimal 0. 4 of 480 Step 2 : 0. 4 480 of means x Step 3 : Do sum 0. 4 480 = 192 Calculator Keys 4 0 1 0 0 x 4 8 0 = 192 Created by Mr. Lafferty Maths Dept S3 How to find % of a quantity using a calculator St. Andrew's Secondary Your turn Try Q4 onwards Exercise 3 Page 62 4 Created by Mr. Lafferty Maths Dept ...
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S3_Fractions_and_Percentages - S3 Starter Questions Q1....

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