Sunday, 19 June 2011

Tues June 21st – Fractions Problems and Expressing one quantity as a fraction of another

LEARNING OBJECTVIE: To apply skills in Multiplying and dividing fractions to solve problems and Learn how to express one quantity as a fraction of another quantity

SUCCESS CRITERIA: You will be able to solve fractions problems involving multiplying, dividing and reciprocals and also be able to express one quantity as a fraction of another.

STARTER: You have 10/12 mins to solve these problems , Check answers with Students

8.

4 x 2/3 = 2 2/3

  

9.

3 x 2 ¾ = 6 9/4 = 8 ¼

   

10.

6 x 2 1/4 =12 6/4 = 13 ½

   

11.

6 ÷ 1 ¾ = 6 x 4 /7 = 24/7 = 3 3/7, 3 tops and 3/7 yards left

   

12.

a. 2

b. ½

c. 4 ÷ 2 ½ = 4 x 2/5 = 8/5 = 1 3/5

d. 6 x ¾ = 18/4 = 4 ½

   

   
 

LESSON: Show examples on IWB of how to express one quantity as a fraction of another

Eg. 35/40 in a test,

45 mins of an hour,

6 hours of a day

6 hours of a week

15 mm of a metre

45, 000 voters in a town of 80,000

REMEMBER: If values are in different units change the larger units to the smaller units

Work through these questions

PLENARY: Which is the bigger fraction 12 mins of one hour or 18 hours of 1 week, SHOW ALL YOUR WORKING

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