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Measuring devices 1 Below is a selection of measuring devices. Can you name them? What other measuring devices can you name? 1.2.3. 4.5.6.7.

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Measuring devices 2 Which tool would you use to measure each of the following: waist size height of a door 5 g of sugar 80 g of pasta length of a jotter length of the school corridor 500 ml of water?

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Measuring length 1 When measuring length, the main units we use are millimetres (mm), centimetres (cm) and metres (m). 0 1 2 3 4 cm 0.5 cm2 cm2.8 cm3.5 cm 4 cm4.6 cm

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Measuring length 2 What length are these arrows pointing to? 0 1 2 3 4 cm abc defg

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Measuring length 3 If you are measuring something that is very small, it can be useful to measure in millimetres. There are 10 millimetres in a centimetre and they are usually written as mm. Most rulers have centimetres and millimetres on them. 0 10 20 30 40 mm 5 mm20 mm28 mm32 mm 38 mm44 mm

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Measuring length 4 What lengths are these arrows pointing to? 0 10 20 30 40 mm abc defg

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Measuring length 5 If you are measuring longer distances you might use metres. 1 metre is made up of 100 cm and is often written as m for short. There are different devices that you can use to measure metres depending on how big an object is. You could use: metre stick measuring tapetrundle wheel metre

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Measuring weight 1 When measuring weight, the main units we use are grams (g) and kilograms (kg). You use grams to measure lighter things and kilograms for heavier things. We use scales to measure weight. These scales are pointing to 550 g 200 100 300400 500 0 600 g You can also use ounces, pounds and stones to measure weight. 200 100 300400 500 0 600 kg These scales are pointing to 200 kg

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Measuring weight 2 200 100 300400 500 0 600 g 200 100 300400 500 0 600 g 200 100 300400 500 0 600 g 200 100 300400 500 0 600 g What weights do these scales show? 1. 2. 3. 4.

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Measuring weight 3 200 100 300400 500 0 600 kg 200 100 300400 500 0 600 kg 200 100 300400 500 0 600 kg 200 100 300400 500 0 600 kg What weights do these scales show? 1. 2. 3. 4.

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Measuring weight 4 These weighing scales shows a weight of 66 kg. 60 70 80 kg

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Measuring weight 5 80 85 9055 60 65 40 50 6070 80 90 What weight do these scales show in kilograms? 1.2. 3. 4. kg

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Measuring volume 1 When measuring volume, the main units we use are millilitres (ml) and litres (l). We can use a measuring jug to measure volume. This jug has 300 ml of liquid in it. 100 ml 150 ml 200 ml 300 ml 400 ml 500 ml 250 ml 350 ml 450 ml For smaller amounts of liquid we use millilitres (ml) and for larger amounts we use litres (l). 1 l 2 l 3 l 4 l 5 l This jug has 4 l of liquid in it.

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Measuring volume 2 100 ml 150 ml 200 ml 300 ml 400 ml 500 ml 250 ml 350 ml 450 ml 100 ml 150 ml 200 ml 300 ml 400 ml 500 ml 250 ml 350 ml 450 ml 100 ml 150 ml 200 ml 300 ml 400 ml 500 ml 250 ml 350 ml 450 ml 100 ml 150 ml 200 ml 300 ml 400 ml 500 ml 250 ml 350 ml 450 ml What volume of liquid is in each jug? 1.2. 3. 4.

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Measuring volume 3 What volume of liquid is in each jug? 1.2. 3. 4. 1 l 2 l 3 l 4 l 5 l 1 l 2 l 3 l 4 l 5 l 1 l 2 l 3 l 4 l 5 l 1 l 2 l 3 l 4 l 5 l

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Measuring quantities 1 When measuring it is not always whole values that you measure. To work out half of something, it is divided into 2 parts that are each the exact same. Half of 2 metres is 1 metre because 1 + 1 metres gives you 2 metres. Half of 4 litres is 2 litres because 2 + 2 litres gives you 4 litres. Half of 6 metres is 3 metres because 3 + 3 metres gives you 6 metres. Half of 6 kg is 3 kg because 3 + 3 kilograms gives you 6 kilograms.

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Measuring quantities 2 To work out how long half a metre is, you have to work in centimetres. There are 100 cm in a metre, so half a metre is 50 cm because 50 cam + 50 cm = 100 cm or 1 metre. There are 1000 ml in a litre, so half a litre is 500 ml because 500 ml + 500 ml = 1000 ml or 1 litre. To work out how much half a litre is, you have to work in millilitres. To work out how heavy half a kilogram is, you have to work in grams. There are 1000 g in a kilogram, so half a kilogram is 500 g because 500 g + 500 g = 1000 g or 1 kg.

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Measuring quantities 3 Work out half of the following values: 1.12 cm 2.8 kg 3.6 mm 4.10 l 5.14 m 6.4 l 7.16 cm 8.1 m 9.1 kg 10.1 l

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Measuring quantities 4 You may also want to work out a quarter of something. To do this, you divide it into 4 parts that are exactly the same. A quarter of 4 metres is 1 metre because 1 + 1 + 1 + 1 metres gives you 4 metres. A quarter of 8 metres is 2 metres because 2 + 2 + 2 + 2 metres gives you 8 metres. A quarter of 16 metres is 4 metres because 4 + 4 + 4 + 4 metres gives you 16 metres.

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Measuring quantities 5 To work out how long a quarter of a metre is, you have to work in centimetres. There are 100 cm in a metre, so a quarter of a metre is 25 cm because 25 + 25 + 25 + 25 cm = 100 cm or 1 metre. There are 1000 ml in a litre, so a quarter of a litre is 250 ml because 250 + 250 + 250 + 250 ml = 1000 ml or 1 litre. To work out how much a quarter of a litre is, you have to work in millilitres. To work out how heavy a quarter of a kilogram is, you have to work in grams. There are 1000 g in a kilogram, so a quarter of a kilogram is 250 g because 250 + 250 + 250 + 250 g = 1000 g or 1 kg.

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Measuring quantities 6 Work out what a quarter of the following values would be: 1.12 cm 2.8 m 3.4 kg 4.16 m 5.20 l 6.40 mm 7.100 cm 8.24 g 9.1 l 10.1 kg

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Measuring quantities 7 You may also want to work out what double something is. To do this, you add the number to itself. To double 1 metre, you add 1 + 1 = 2 metres. To double 2 litres, you add 2 + 2 = 4 litres. To double 3 metres you add 3 + 3 = 6 metres. To double 4 kilograms you add 4 + 4 = 8 kilograms. To double 100 millilitres you add 100 + 100 = 200 millilitres.

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Measuring quantities 8 Work out what double the following values would be: 1.12 g 2.8 m 3.6 mm 4.10 m 5.14 l 6.4 mm 7.16 cm 8.1 m. 9.9 kg 10. 7 ml