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Finding Fractional Wholes

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Finding Fractional Wholes

To find a whole from a fractional part, divide the part by the fraction, or multiply by the fraction’s reciprocal. Show your working and include units where needed.

Find the Whole

1.Three-quarters of a quantity is 54. What is the whole quantity?
2.A tray has 7/8 of its muffins left. There are 42 muffins on the tray. How many muffins were there before any were taken?
3.At a community event, 4/5 of the registered volunteers arrive. If 160 volunteers arrive, how many were registered?
4.Five-thirds of a number is 95. Find the number.

Model and Apply

5.Three-fifths of a group is 21 people. Draw a fraction bar divided into fifths to show the known part, then calculate the size of the whole group.
6.A baker uses 2.4 kg of oats, which is 3/4 of the amount needed for a large batch. How many kilograms of oats are needed for the whole batch?
7.Seven-fourths of a number is 84. What is the number?
  • 48
  • 96
  • 120
  • 147

Challenge Problems

8.A club spends $315 on a venue, which is 3/5 of its budget. It uses 1/4 of the money left for refreshments. How much does it spend on refreshments?
9.A water tank is 5/6 full and contains 250 litres. What is the tank’s full capacity?
10.Let x be the whole amount. Write an equation and solve it if 7/4 of x is 126.

3 printable pages

  • Finding Fractional Wholes, page 1 of 3: Find the Whole

    Page 1

  • Finding Fractional Wholes, page 2 of 3: Model and Apply, Challenge Problems

    Page 2

  • Finding Fractional Wholes, page 3 of 3: 10. Let x be the whole amount. Write an equation and solve it if 7/4 of x is 126.

    Page 3

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