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Learning Intention

Ratios. Learning Intention. To understand how to simplify ratios. ÷ 2. ÷ 2. Ratios. Simplifying a ratio ?. Ratios can be simplified like fractions by dividing each part by the same highest number. Highest Common Factor. Fraction :. =. 6 : 8. Ratio :. 3 : 4. ÷ 3. ÷ 3. Ratios.

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Learning Intention

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  1. Ratios Learning Intention • To understand how to simplify ratios

  2. ÷ 2 ÷ 2 Ratios Simplifying a ratio ? Ratios can be simplified like fractions by dividing each part by the same highest number. Highest Common Factor Fraction : = 6: 8 Ratio : 3 : 4

  3. ÷ 3 ÷ 3 Ratios Simplifying a ratio ? For a three-part ratio all three parts must be divided by the same number. For example, 6 : 12 : 9 = 2 : 4 : 3

  4. What is the ratio of red counters to blue counters? ÷ 3 ÷ 3 Ratios Simplifying a ratio ? For example, red : blue = 9 : 3 = 3 : 1 For every three red counters there is one blue counter.

  5. For example, What is the ratio of blue counters to red counters? ÷ 3 ÷ 3 Ratios Simplifying a ratio ? The ratio of blue counters to red counters is not the same as the ratio of red counters to blue counters. blue : red = 3 : 9 = 1 : 3 For every blue counter there are three red counters.

  6. What is the ratio of red counters to yellow counters to blue counters? ÷ 4 ÷ 4 Ratios Simplifying a ratio ? red : yellow : blue = 12 : 4 : 8 = 3 : 1 : 2 For every three red counters there is one yellow counter and two blue counters.

  7. Ratios Simplifying a ratio ? Now try Ex 2 Ch15 Page 177

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