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# BIRKDALE HIGH SCHOOL Converting between Metric units - PowerPoint PPT Presentation

Ma 2 Level 6. Aim of the lesson: To teach a method for converting between metric units. BIRKDALE HIGH SCHOOL Converting between Metric units. Here is the metric table. Metres m. Length. The length of a lorry is about 20 m. The distance to London is about 50 Km.

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Presentation Transcript

Aim of the lesson: To teach a method for converting between metric units

BIRKDALE HIGH SCHOOL

Converting between Metric units

Metres m

Length

The length of a lorry is about 20 m

The distance to London is about 50 Km

The height of a man is 176 cm

The length of the needle is 21 mm

Mass

The mass of a sheet of paper is about 1 gramme

The mass of the man is 67 Kg

The mass of the drug in the medicine is 4 mg

Capacity

A large bottle of coke is 1 l

The oil lorry holds about 3 Kl

The thimble holds about 1 ml

Are a

Area

The class room is about 1 are

The football field is about ½ Hectare

An desk top in class is about 4 centiares

= 420 cm

Change 4·2 metres (m) to centimetres (cm)

4 . 2 0 0 0

Change 0·75 grammes (m) to milligrammes (mg)

0 . 7 5 0 0

• Change:

• 45·2 m → cm

• 7·9 ares → milliares

• 0·07 g → cg

• 0·123 m → mm

• 2 litres → centilitres

4520

7900

7

123

200

Change 42·7 Ares (a) to Hectares (Ha)

= 0·427 km

4 2 . 7

• Change:

• 45·2 m → km

• 7900 ares → hectares

• 73·4 g → kg

• 123 m → km

• 20000 litres → kilolitres

0·0452

79

0·0734

0·123

20

You can use this table to convert between any of these metric units as long as you remember:

• Count the number and direction from the starting unit to the finishing unit

• Move the decimal in the same way

= 0 metric units as long as you remember:·01425 km

Change 1425·2 cm to Km

1 4 2 5 . 2

0

0

= 6,000 cg metric units as long as you remember:

Change 0·06 Kg to cg

0 . 0 6 0 0 0 0

• Change: metric units as long as you remember:

• 45·2 hm → km

• 7900 milliares → centiares

• 73·4 mg → g

• 123 km → hm

• 20 millilitres → litres

0·452

790

0·0734

1230

0·02