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Fractions - Multiples, Factors and Primes

The trick here is picking out the important bits from the sentences and translating them into numbers. It takes practice.
Answer these without using your calculator:

1 - Fractions

What fraction of 1 hour are these?
  1. 5 minutes ____________
  2. 15 minutes ____________
  3. 40 minutes? ____________

2 - Fractions

If a TV programme lasts 40 minutes, what fraction of the programme is left after:
  1. 10 minutes ____________
  2. 15 minutes ____________
  3. 35 minutes? ____________

3 - Fractions

A café employs eighteen girls and twelve boys to wait at tables. Another six boys and nine girls work in the kitchen.
  1. What fraction of the kitchen staff are girls? ____________
  2. What fraction of the employees are boys? ____________
In a survey, people were asked if they liked a new cola drink. One in five thought it was great, four out of fifteen felt there was no difference in taste, three in ten disliked it and the rest offered no opinion.
Forget all about cola drinks — just write it all as a sum, then do the calculation. Easy
What fraction of people offered no opinion?

4 - Fractions

Neil wore red trousers on a total of 12 days in November.
  1. On what fraction of the total number of days in November did Neil wear red trousers? ____________
  2. For 1/5 of the days in November Neil wore a blue shirt. How many days is this? ____________

5 - Fractions

The Sandwich Club of Great Britain are going on their annual picnic. The boxes they use to transport their sandwiches are 10 inches high and are the width and length of a single sandwich. Each sandwich is 5/8 inch thick.

  1. How many boxes will they need for 80 sandwiches? ____________
  2. How tall would the box need to be if 40 sandwiches were to be stacked inside? ____________

What do you think?

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