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Whiteboardmaths.com © 2004 All rights reserved 5 7 2 1.

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Presentation on theme: "Whiteboardmaths.com © 2004 All rights reserved 5 7 2 1."— Presentation transcript:

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2 Whiteboardmaths.com © 2004 All rights reserved 5 7 2 1

3 http://www.microsoft.com/downloads/en/details.aspx?FamilyID=cb9bf144-1076-4615-9951-294eeb832823 PROBLEMS VIEWING PRESENTATION PowerPoint XP PowerPoint 2007  PowerPoint 2010 PowerPoint Viewer Slides (4 and 10) show various shapes as shown below. For some unknown reason, some of these shapes are only partly visible when viewed with PowerPoint 2007. It is hoped that service pack 3 may fix the problem when it becomes available. In the meantime it is suggested that you do one of the following if you are using PowerPoint 2007: 1.Use the two “screen shots” slides that have been added (5 and 11) instead. 2.Download the free PowerPoint Viewer using the first link below. If you require further information on the problem, you can visit Microsoft Support at http://support.microsoft.com/kb/941878 where they supply a “HOT FIX” for this problem, should you wish to use it.http://support.microsoft.com/kb/941878

4 Fractions of Quantities Example 1. Find 1/3 of £12 1/3 of £12 = 12  3 = £4 Unit Fractions Example 2. Find 1/4 of £20 1/4 of £20 = 20  4 = £5 To calculate a unit fraction of a quantity, simply divide the quantity by the denominator.

5 Fractions of Quantities 1/5 of 45 = 45  5 = 9 mm Unit Fractions 1/6 of 42 = 42  6 = 7 km To calculate a unit fraction of a quantity, simply divide the quantity by the denominator. Example 3. Find 1/5 of 45 mm Example 4. Find 1/6 of 42 km

6 1/5 of 45 = 45  5 = 9 mm 1/6 of 42 = 42  6 = 7 km

7 Fractions of Quantities 1/8 of 56 = 56  8 = 7 cm Unit Fractions 1/9 of 72 = 72  9 = £8 To calculate a unit fraction of a quantity, simply divide the quantity by the denominator. Example 5. Find 1/8 of 56 cm Example 6. Find 1/9 of £72

8 Fractions of Quantities 1/10 of 90 = 90  10 = 9 kg Unit Fractions 1/15 of 75 = 75  15 = 5 g To calculate a unit fraction of a quantity, simply divide the quantity by the denominator. Example 7. Find 1/10 of 90 kg Example 8. Find 1/15 of 75 g

9 Fractions of Quantities Unit Fractions Calculate the fractions of the quantities shown. 1 4 of £24 1 5 of 30 kg 1 6 of 54 mm 1 3 of 60 cm 1 8 of 40 km 1 10 of 120 l 1 9 of £36 1 12 of 72 g 1 20 of $180 1 2 3 4 5 6 7 8 9 £6 6 kg 9 mm 20 cm 5 km 12 l £4 6 g $9

10 Fractions of Quantities Example 1. Find 2/3 of £12 1/3 of 12 = 12  3 = 4 2 x 4 = £8 Example 2. Find 3/4 of £20 1/4 of 20 = 20  4 = 5 3 x 5 = £15 To calculate a general fraction of a quantity, simply divide the quantity by the denominator then multiply by the numerator. General Fractions

11 Fractions of Quantities 1/5 of 35 = 35  5 = 7 3 x 7 = 21 m 1/6 of 54 = 54  6 = 9 5 x 9 = 45 kg To calculate a general fraction of a quantity, simply divide the quantity by the denominator then multiply by the numerator. Example 3. Find 3/5 of 35 m Example. 4 Find 5/6 of 54 kg General Fractions

12 1/5 of 35 = 35  5 = 7 3 x 7 = 21 m 1/6 of 54 = 54  6 = 9 5 x 9 = 45 kg

13 Fractions of Quantities 1/8 of 96 = 96  8 = 12 5 x 12 = 60 kg 1/9 of 81 = 81  9 = 9 4 x 9 = 36 mm To calculate a general fraction of a quantity, simply divide the quantity by the denominator then multiply by the numerator. Example 5. Find 5/8 of 96 kg Example. 6 Find 4/9 of 81 mm General Fractions

14 Fractions of Quantities 1/10 of 180 = 180  10 = 18 7 x 18 = 136 kg 1/15 of 105 = 105  15 = 7 7 x 7 = 49 mm To calculate a general fraction of a quantity, simply divide the quantity by the denominator then multiply by the numerator. General Fractions Example 7. Find 7/10 of 180 kg Example. 8 Find 7/15 of 105 mm

15 Fractions of Quantities General Fractions Calculate the fractions of the quantities shown. 3 4 of £36 4 5 of 30 kg 5 6 of 48 mm 2 3 of 90 cm 7 8 of 56 km 9 10 of 120 l 7 9 of £36 11 12 of 72 g 13 20 of $180 1 2 3 4 5 6 7 8 9 £27 24 kg 40 mm 60 cm 49 km 108 l £28 66 g $117

16 Fractions of Quantities Unit Fractions Calculate the fractions of the quantities shown. 1 4 of £24 1 5 of 30 kg 1 6 of 54 mm 1 3 of 60 cm 1 8 of 40 km 1 10 of 120 l 1 9 of £36 1 12 of 72 g 1 20 of $180 1 2 3 4 5 6 7 8 9

17 Fractions of Quantities General Fractions Calculate the fractions of the quantities shown. 3 4 of £36 4 5 of 30 kg 5 6 of 48 mm 2 3 of 90 cm 7 8 of 56 km 9 10 of 120 l 7 9 of £36 11 12 of 72 g 13 20 of $180 1 2 3 4 5 6 7 8 9


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