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L.O. To be able to find the fraction of a quantity

L.O. To be able to find the fraction of a quantity. 3. 5. ‘Whole number ÷ denominator x numerator’. Numerator. 55. of. Denominator. Whole number. 55 boxes. 5. 11. Let’s divide the 55 boxes into 5 parts. We must choose 3 out of these 5 parts. 33 boxes!. 5. 5. Let’s try one. 3.

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L.O. To be able to find the fraction of a quantity

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  1. L.O. To be able to find the fraction of a quantity

  2. 3 5 ‘Whole number ÷ denominator x numerator’ Numerator 55 of Denominator Whole number

  3. 55 boxes 5 11

  4. Let’s divide the 55 boxes into 5 parts

  5. We must choose 3 out of these 5 parts 33 boxes!

  6. 5 5 Let’s try one... 3 of 5 ÷ 33 = x Denominator Numerator Whole number

  7. 5 6 Another one... 4 of 7 ÷ 32 = x Denominator Numerator Whole number

  8. 8 1 Follow the formula and it’s easy... 6 of 9 ÷ 54 = x Denominator Numerator Whole number

  9. 9 6 Last one... 9 of 12 ÷ 72 = x Denominator Numerator Whole number

  10. Important Note • When you are finding a fraction of a whole quantity you are finding a part of that quantity, so: • The UNITS of your answer will be the SAME as the units of the whole quantity • Your answer will ALWAYS be SMALLER than the whole quantity, because it is part of it!

  11. 3 5 Always use this formula for finding fractions of whole numbers: ‘Whole number ÷ denominator x numerator’ Numerator 55kg of Denominator Whole number

  12. 5 5 Let’s try one... 3 of 5 ÷ 33kg = x Denominator Numerator Whole number

  13. 16 9 A B 12 D C Question1 What is ½ of 36 18

  14. B 10 5 A 20 C D Question 2 What is 1/5 of 25? 15

  15. A B 250 20 40 C D Question 3 Calculate 4/5 of 50 15

  16. A B 21 20 7 C D Question 4 Which of the following is 3/5 of 35? 6

  17. Fraction of a Quantity CW Worksheet Let’s work through it together… • Write the Fraction • Write the Quantity • Write the Fraction of the Quantity • Show Working • Write Answer

  18. Early Finishers Play Mathman  http://www.sheppardsoftware.com/mathgames/fractions/mathman_fractions_number.htm Homework: Pg 90 Exericse 6k No.11 and No.12

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