fraction(of quantities) - newman school
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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.
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
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
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
Fractions of Quantities
Unit Fractions
Calculate the fractions of the quantities shown.
14
of £2415
of 30 kg16
of 54 mm
13
of 60 cm18
of 40 km1
10of 120 l
19
of £361
12of 72 g
120
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
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
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
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
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
Fractions of Quantities
General Fractions
Calculate the fractions of the quantities shown.
34
of £3645
of 30 kg56
of 48 mm
23
of 90 cm78
of 56 km910
of 120 l
79
of £361112
of 72 g1320
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
Fractions of Quantities
Unit Fractions
Calculate the fractions of the quantities shown.
14
of £2415
of 30 kg16
of 54 mm
13
of 60 cm18
of 40 km1
10of 120 l
19
of £361
12of 72 g
120
of $180
1 2 3
4 5 6
7 8 9
Fractions of Quantities
General Fractions
Calculate the fractions of the quantities shown.
34
of £3645
of 30 kg56
of 48 mm
23
of 90 cm78
of 56 km910
of 120 l
79
of £361112
of 72 g1320
of $180
1 2 3
4 5 6
7 8 9