Download presentation
Presentation is loading. Please wait.
Published byRolf Stewart Modified over 9 years ago
1
Whiteboardmaths.com © 2007 All rights reserved 5 7 2 1
2
Gallons to litres To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1%. Metric/Imperial Measures (Capacity). 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 200 ml 1 Gallon
3
To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1% Metric/Imperial Measures (Capacity). 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 l1 l 1 Gallon
4
2 l2 l To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1% Metric/Imperial Measures (Capacity). 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 l1 l 1 Gallon
5
2 l2 l 1 l1 l 3 l3 l To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1% Metric/Imperial Measures (Capacity). 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 Gallon
6
2 l2 l 1 l1 l 3 l3 l 4 l4 l To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1% Metric/Imperial Measures (Capacity). 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 Gallon
7
2 l2 l 1 l1 l 3 l3 l 4 l To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1% Metric/Imperial Measures (Capacity). 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 4½ l 4½ litres 1 Gallon
8
To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1% Metric/Imperial Measures (Capacity). 4½ litres 1 Gallon Find the number of litres in the following containers; 2 Gallons 2 x 4½ = 9 litres 3 Gallons 3 x 4½ = 13½ litres (a) (b)
9
To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1% Metric/Imperial Measures (Capacity). 4½ litres 1 Gallon Find the number of litres in the following containers; 2.3 x 4½ = 10.35 litres 4.1 Gallons 4.1 x 4½ = 18.45 litres (a) (b) 2.3 Gallons
10
To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1% Metric/Imperial Measures (Capacity). 4½ litres 1 Gallon Find the number of litres in the following containers; 0.5 x 4½ = 2.25 litres 5.4 x 4½ = 24.3 litres (a) (c) 0.5 Gallons 0.8 Gallons 0.8 x 4½ = 3.6 litres (b) 5.4 Gallons
11
To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1% Metric/Imperial Measures (Capacity). Find the number of litres in the following containers; 24 x 4½ = 108 litres 56 x 4½ = 252 litres (a) (b) 24 Gallons 56 Gallons 4½ litres 1 Gallon
12
QuestionGallons Litres 11 24 35 410 5½ 616 720 825 950 10100 Complete the table below. Metric/Imperial Measures (Capacity).
13
QuestionGallons Litres 114.5 2418 3522.5 41045 5½2.25 61672 72090 825112.5 950225 10100450 Complete the table below. Metric/Imperial Measures (Capacity).
14
Litres to gallons To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1% Metric/Imperial Measures (Capacity). 4½ litres 1 Gallon 2 Gallons 2 x 4½ = 9 litres 18 Litres 18 4½ = 4 gallons (a) (b) When we converted gallons to litres we multiplied by 4½, when we convert from litres back to gallons we simply do the opposite and divide by 4½.
15
Metric/Imperial Measures (Capacity). 4½ litres 1 Gallon Find the number of gallons in the following containers; 13.5 4½ = 3 gallons 18.45 Litres 18.45 4½ = 4.1 gallons (a) (b) 13.5 Litres To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1%
16
Metric/Imperial Measures (Capacity). 4½ litres 1 Gallon Find the number of gallons in the following containers; 2.25 4½ = 0.5 gallons 24 4.5 = 5 and 1/3 gallons (a) (c) 2.25 litres 3.15 litres 3.15 4½ = 0.7 gallons (b) 24 litres To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1%
17
Metric/Imperial Measures (Capacity). Find the number of gallons in the following containers; 162 4½ = 36 gallons 315 4½ = 70 gallons (a) (b) 162 litres 315 litres 4½ litres 1 Gallon To convert between gallons and litres we can use the fact that 1 gallon 4½ litres. This is a good approximation with an error of only about 1%
18
QuestionLitres Gallons 14½ 29 313½ 42¼ 527 636 714.4 856.25 945 10100 Complete the table below to 2 dp where appropriate. Metric/Imperial Measures (Capacity).
19
QuestionLitres Gallons 14½1 292 313½3 42¼½ 5276 6368 714.43.2 856.2512.5 94510 10022.2 Complete the table below to 1 dp where appropriate. Metric/Imperial Measures (Capacity).
20
Litres to pints Since 4½ litres 1 gallon = 8 pints then: Metric/Imperial Measures (Capacity). 1 Gallon 1 litre ½ litre 4½ litres 8 pints So 1 litre 8/4½ pints 1¾ pints. This is a good approximation and has an error of less than 1%. 1 litre 1¾ pints
21
Metric/Imperial Measures (Capacity). Since 4½ litres 1 gallon = 8 pints then: 4½ litres 8 pints So 1 litre 8/4.5 pints 1¾ pints. This is a good approximation to the true value and has an error of less than 1%. 1 litre 200 ml 400 ml 600 ml 800 ml 1 pint ¾ ½ ¼ ¾ ½ ¼ 1 litre 1¾ pints To make very rough, rapid mental calculations between litres and pints you could use the much less accurate approximation of 1 litre 2 pints although this gives an answer that is about 14% too big.
22
Metric/Imperial Measures (Capacity). 1 litre 1¾ pints To make very rough, rapid mental calculations between litres and pints you could use the much less accurate approximation of 1 litre 2 pints although this is about 14% too big. Find the number of pints in each case. 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 3 x 1¾ = 5¼ pints (good) 3 x 2 = 6 pints (very rough)
23
Metric/Imperial Measures (Capacity). 1 litre 1¾ pints To make very rough, rapid mental calculations between litres and pints you could use the much less accurate approximation of 1 litre 2 pints although this is about 14% too big. Find the number of pints in each case. 4 x 1¾ = 7 pints (good) 4 x 2 = 8 pints (very rough) 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml
24
Metric/Imperial Measures (Capacity). 1 litre 1¾ pints To make very rough, rapid mental calculations between litres and pints you could use the much less accurate approximation of 1 litre 2 pints although this is about 14% too big. Find the number of pints in each case. 1.6 x 1.75 = 2.8 pints (good) 1.6 x 2 = 3.2 pints (very rough) 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml
25
Metric/Imperial Measures (Capacity). 1 litre 1¾ pints To make very rough, rapid mental calculations between litres and pints you could use the much less accurate approximation of 1 litre 2 pints although this is about 14% too big. Find the number of pints in each case. 2.8 x 1.75 = 4.9 pints (good) 2.8 x 2 = 5.6 pints (very rough) 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml
26
Metric/Imperial Measures (Capacity). 1 litre 1¾ pints To make very rough, rapid mental calculations between litres and pints you could use the much less accurate approximation of 1 litre 2 pints although this is about 14% too big. Find the number of pints in each case. 9 x 1.75 = 15.75 pints (good) 15.4 Litres 9 Litres 9 x 2 = 18 pints (very rough) 15.4 x 1.75 = 26.95 pints (good) 15.4 x 2 = 30.8 pints (very rough)
27
QuestionLitresPints (good) Pints (very rough) 11 22 34 48 510 6½ 7¾ 816 956 10100 Complete the table below. Metric/Imperial Measures (Capacity).
28
QuestionLitresPints (good) Pints (very rough) 111¾2 223½4 3478 481416 51017.520 6½0.8751 7¾1.31251½ 8162832 95698112 10100175200 Complete the table below. Metric/Imperial Measures (Capacity).
29
Pints to litres Metric/Imperial Measures (Capacity). 1 litre 1¾ pints 1 litre 200 ml 400 ml 600 ml 800 ml 1 pint ¾ ½ ¼ ¾ ½ ¼ 1 litre 200 ml 400 ml 600 ml 800 ml 1 litre 200 ml 400 ml 600 ml 800 ml 2 x 1¾ = 3½ pints (good) When we converted litres to pints we multiplied by 1¾, when we convert from pints back to litres we simply do the opposite and divide by 1¾. (Again dividing by 2 would give only a very rough estimate) 7 1¾ = 4 litres (good) 2 x 2 = 4 pints (very rough) 7 2 = 3½ litres (very rough)
30
Metric/Imperial Measures (Capacity). 1 litre 1¾ pints 14 1¾ = 8 litres (good) 14 2 = 7 litres (very rough) Find the number of litres in each case. 1 litre 200 ml 400 ml 600 ml 800 ml 1 pint ¾ ½ ¼ ¾ ½ ¼
31
Metric/Imperial Measures (Capacity). 1 litre 1¾ pints 56 1¾ = 32 litres (good) 56 2 = 28 litres (very rough) Find the number of litres in each case. 1 litre 200 ml 400 ml 600 ml 800 ml 1 pint ¾ ½ ¼ ¾ ½ ¼
32
Metric/Imperial Measures (Capacity). 1 litre 1¾ pints 3½ 1¾ = 2 litres (good) 3½ 2 = 1¾ litres (very rough) Find the number of litres in each case. 1 litre 200 ml 400 ml 600 ml 800 ml 1 pint ¾ ½ ¼ ¾ ½ ¼ ¾ ½ ¼ ¾ ½ ¼ ¾ ½ ¼ ¾ ½ ¼
33
Metric/Imperial Measures (Capacity). 1 litre 1¾ pints 5¼ 1¾ = 3 litres (good) 5¼ 2 = 2.625 litres (very rough) Find the number of litres in each case. 1 litre 200 ml 400 ml 600 ml 800 ml 1 pint ¾ ½ ¼ ¾ ½ ¼ ¾ ½ ¼ ¾ ½ ¼ ¾ ½ ¼ ¾ ½ ¼ ¾ ½ ¼ ¾ ½ ¼
34
Metric/Imperial Measures (Capacity). 72 1¾ = 41.1 litres (good) 72 2 = 36 litres (very rough) 1 litre 1¾ pints 72 Pints Find the number of litres in each case. (1 dp). 1 litre 200 ml 400 ml 600 ml 800 ml 1 pint ¾ ½ ¼ ¾ ½ ¼
35
Questionpintslitres (good) litres (very rough) 11 23.5 37 4½ 510 614 721 835 956 10100 Complete the table below to 2 dp where appropriate. Metric/Imperial Measures (Capacity).
36
Questionpintslitres (good) litres (very rough) 110.57½ 23.521¾ 3743½ 4½0.29¼ 5105.715 61487 7211210½ 8352017½ 9563228 1010057.1450 Complete the table below to 2 dp where appropriate. Metric/Imperial Measures (Capacity).
37
Worksheets QuestionGallons Litres 11 24 35 410 5½ 616 720 825 950 10100 Complete the table below. Metric/Imperial Measures (Capacity). Worksheet 1
38
QuestionLitres Gallons 14½ 29 313½ 42¼ 527 636 714.4 856.25 945 10100 Complete the table below. Metric/Imperial Measures (Capacity). Worksheet 2
39
QuestionLitresPints (good) Pints (very rough) 11 22 34 48 510 6½ 7¾ 816 956 10100 Complete the table below. Metric/Imperial Measures (Capacity). Worksheet 3
40
Questionpintslitres (good) litres (very rough) 11 23.5 37 4½ 510 614 721 835 956 10100 Complete the table below to 2 dp where appropriate. Metric/Imperial Measures (Capacity). Worksheet 4
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.