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Percentages

Percentages. Fractions. Decimal fractions. 100%. 1.00. 1. 10%. 0.1 0. 1 / 10. 50%. 0.5 0. 1 / 2. 1%. 0.01. 1 / 100. 33 1 / 3 %. 0.33. 1 / 3. 30%. 0.3 0. 3 / 10. 25%. 0.25. 1 / 4. 20%. 0.2 0. 1 / 5. 7%. 0.07. 7 / 100. 10% of £73. 10% of £126.50. 12% of £31.

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Percentages

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  1. Percentages Fractions Decimal fractions 100% 1.00 1 10% 0.10 1/10 50% 0.50 1/2 1% 0.01 1/100 331/3% 0.33.. 1/3 30% 0.30 3/10 25% 0.25 1/4 20% 0.20 1/5 7% 0.07 7/100

  2. 10% of £73 10% of £126.50 12% of £31 68% of £144.50 25% of £64 25% of £134.40 17% of £32.40 21% of £34.40 30% of £24 90% of £108.90 47% of £74 93% of £165.40 1% of £247 7% of £304 9% of £24.37 8% of £3548 non-calculator calculator = 0.12 x 31 = £ 3.72 = 0.68 x 144.5 = £ 98.26 = £ 7.30 = £ 12.65 = 0.17 x 32.4 = 5.508 = £ 5.51 = 0.21 x 34.4 = 7.224 = £ 7.22 = £ 16 = £ 33.60 = 0.47 x 74 = £ 34.78 = 0.21 x 34.4 = 153.822 = £ 153.82 108.90 - 10.89 = £ 7.20 = £ 98.01 3.04 x 7 = 0.09 x 24.27 = £ 2.18 = 0.08 x 3548 = £ 283.84 = £ 2.47 = £ 21.28

  3. Interest is 3.2% p a. Calculate the interest on £450 for (i) 1 year (ii) 4 months Discount at 331/3% is offered on items in the Sale. Calculate the (i) discount (ii) sale price on an item priced at £ 56.40 The bank charges interest is 7.8% p a. Calculate the interest on charged on £2250 borrowed for 3 years. Employees are offered a 12% raise. Jim earns £16 450 pa Calculate the (i) increase (ii) new salary earned Jim after the pay rise. VAT on fuel bills is charged at 5%. Calculate the VAT on a gas bill of £75.60. What is the total bill? VAT at 171/2% is charged on items in a clothing warehouse. Calculate the (i) VAT (ii) cost of item at £23.20 excluding VAT.

  4. Interest is 3.2% p a. Calculate the interest on £450 for (i) 1 year (ii) 4 months 14.40 3 Interest = 3.2% of £450 for 1 year Interest = = 0.032 x 450 = £ 14.40 for 12 months = £ 4.80 Discount at 331/3% is offered on items in the Sale. Calculate the (i) discount (ii) sale price on an item priced at £ 56.40 Discount = 331/3% of £56.40 £ 56.40 - 18.80 sale price = £ 37.60 = 56.40 ÷ 3 = £ 18.80 The bank charges interest is 7.8% p a. Calculate the interest on charged on £2250 borrowed for 3 years. Interest = 7.8% of £2250 for 1 year = 0.078 x 2250 for 3 years = 175.50 x 3 = 175.50 = £ 526.50

  5. Employees are offered a 12% raise. Jim earns £16 450 pa Calculate the (i) increase (ii) new salary earned Jim after the pay rise. increase = 12% of £ 16 450 for 1 year 16 450 1 974 So new salary is £ 18 424 = 0.12 x 16 450 = £ 1974 VAT on fuel bills is charged at 5%. Calculate the VAT on a gas bill of £75.60. What is the total bill? VAT = 5% of £ 75.60 75.60 37.80 So total bill is £ 113.40 = 0.05 x 75.60 = £ 37.80 VAT at 171/2% is charged on items in a clothing warehouse. Calculate the (i) VAT (ii) cost of item at £23.20 excluding VAT. VAT = 2.32 1.16 0.58 171/2 % of £ 23.20 23.20 VAT = 4.06 So total bill is £ 27.26 = 0.175 x 23.20 = £ 4.06

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