Converting units
- 2. We use different metric units to measure :- We can use our knowledge of multiplying and dividing by 10, 100 or 1000 to change or convert measurements in one unit to measurements in another unit.
- 3. We are going to use our knowledge aboutWe are going to use our knowledge about multiplying and dividing by 100 to convertmultiplying and dividing by 100 to convert centimetres to metres and to convert metrescentimetres to metres and to convert metres to centimetres.to centimetres.
- 4. There are 100 centimetres in 1 metre When we change from cm to m we divide by:- Remember! When we divide by 100 the units move two places to the right. H T U th hth th 4 2 7 0 0 0 ÷100 This is how we change 427cm into metres:-
- 5. There are 100 centimetres in 1 metre When we change from cm to m we divide by:- Remember! When we divide by 100 the units move two places to the right. H T U th hth th 4 2 7 0 0 0 ÷100 This is how we change 427cm into metres:-
- 6. There are 100 centimetres in 1 metre When we change from cm to m we divide by:- Remember! When we divide by 100 the units move two places to the right. H T U th hth th 4 2 7 0 0 ÷100 This is how we change 427cm into metres:-
- 7. There are 100 centimetres in 1 metre When we change from cm to m we divide by:- Remember! When we divide by 100 the units move two places to the right. H T U th hth th 4 2 7 0 ÷100 This is how we change 427cm into metres:-
- 8. There are 100 centimetres in 1 metre When we change from cm to m we divide by:- Remember! When we divide by 100 the units move two places to the right. H T U th hth th 4 2 7 0 ÷100 This is how we change 427cm into metres:-
- 9. There are 100 centimetres in 1 metre When we change from cm to m we divide by:- Remember! When we divide by 100 the units move two places to the right. H T U th hth th 4 2 7 0 ÷100 This is how we change 427cm into metres:-
- 10. There are 100 centimetres in 1 metre When we change from cm to m we divide by:- Remember! When we divide by 100 the units move two places to the right. H T U th hth th 4 2 7 0 ÷100 This is how we change 427cm into metres:-
- 11. There are 100 centimetres in 1 metre When we change from cm to m we divide by:- Remember! When we divide by 100 the units move two places to the right. H T U th hth th 4 2 7 0 ÷100 This is how we change 427cm into metres:-
- 12. There are 100 centimetres in 1 metre When we change from cm to m we divide by:- Remember! When we divide by 100 the units move two places to the right. H T U th hth th 4 2 7 0 ÷100 This is how we change 427cm into metres:-
- 13. There are 100 centimetres in 1 metre When we change from cm to m we divide by:- Remember! When we divide by 100 the units move two places to the right. H T U th hth th 4 2 7 0 ÷100 This is how we change 427cm into metres:-
- 14. There are 100 centimetres in 1 metre When we change from cm to m we divide by:- Remember! When we divide by 100 the units move two places to the right. H T U th hth th 4 2 7 0 ÷100 This is how we change 427cm into metres:-
- 15. Therefore:-Therefore:- 427cm = 4.27m427cm = 4.27m H T U t h th 3 2 6 H T U t h th 3 2 6 H T U t h th 4 7 6 H T U t h th 1 6 5 3 H T U t h th 0 4 7 6 H T U t h th 1 6 5 3 ÷100÷100 ÷100÷100 ÷100÷100 cmcm mm
- 16. 354cm354cm 15.4cm15.4cm 779cm779cm 52.4cm52.4cm 939cm939cm 395cm395cm 25.8cm25.8cm 3.54m3.54m 0.154m0.154m 7.79m7.79m 0.524m0.524m 9.39m9.39m 3.95m3.95m 0.258m0.258m ÷100÷100 Convert from centimetres to metresConvert from centimetres to metres
- 17. To change from metres to centimetres weTo change from metres to centimetres we MULTIPLY BY 100.MULTIPLY BY 100. REMEMBERREMEMBER When we multiply by 100 we move eachWhen we multiply by 100 we move each digit two places to the left:-digit two places to the left:- H T U t h th 3 5 1 3.51m =3.51m =
- 18. To change from metres to centimetres weTo change from metres to centimetres we MULTIPLY BY 100.MULTIPLY BY 100. REMEMBERREMEMBER When we multiply by 100 we move eachWhen we multiply by 100 we move each digit two places to the left:-digit two places to the left:- H T U t h th 3 5 1 3.51m =3.51m =
- 19. To change from metres to centimetres weTo change from metres to centimetres we MULTIPLY BY 100.MULTIPLY BY 100. REMEMBERREMEMBER When we multiply by 100 we move eachWhen we multiply by 100 we move each digit two places to the left:-digit two places to the left:- H T U t h th 3 5 1 3.51m =3.51m =
- 20. To change from metres to centimetres weTo change from metres to centimetres we MULTIPLY BY 100.MULTIPLY BY 100. REMEMBERREMEMBER When we multiply by 100 we move eachWhen we multiply by 100 we move each digit two places to the left:-digit two places to the left:- H T U t h th 3 5 1 3.51m =3.51m =
- 21. To change from metres to centimetres weTo change from metres to centimetres we MULTIPLY BY 100.MULTIPLY BY 100. REMEMBERREMEMBER When we multiply by 100 we move eachWhen we multiply by 100 we move each digit two places to the left:-digit two places to the left:- H T U t h th 3 5 1 3.51m =3.51m =
- 22. To change from metres to centimetres weTo change from metres to centimetres we MULTIPLY BY 100.MULTIPLY BY 100. REMEMBERREMEMBER When we multiply by 100 we move eachWhen we multiply by 100 we move each digit two places to the left:-digit two places to the left:- H T U t h th 3 5 1 3.51m =3.51m =
- 23. To change from metres to centimetres weTo change from metres to centimetres we MULTIPLY BY 100.MULTIPLY BY 100. REMEMBERREMEMBER When we multiply by 100 we move eachWhen we multiply by 100 we move each digit two places to the left:-digit two places to the left:- H T U t h th 3 5 1 3.51m =3.51m =
- 24. To change from metres to centimetres weTo change from metres to centimetres we MULTIPLY BY 100.MULTIPLY BY 100. REMEMBERREMEMBER When we multiply by 100 we move eachWhen we multiply by 100 we move each digit two places to the left:-digit two places to the left:- H T U t h th 3 5 1 3.51m =3.51m =
- 25. To change from metres to centimetres weTo change from metres to centimetres we MULTIPLY BY 100.MULTIPLY BY 100. REMEMBERREMEMBER When we multiply by 100 we move eachWhen we multiply by 100 we move each digit two places to the left:-digit two places to the left:- H T U t h th 3 5 1 3.51m =3.51m =
- 26. To change from metres to centimetres weTo change from metres to centimetres we MULTIPLY BY 100.MULTIPLY BY 100. REMEMBERREMEMBER When we multiply by 100 we move eachWhen we multiply by 100 we move each digit two places to the left:-digit two places to the left:- H T U t h th 3 5 1 3.51m =3.51m =
- 27. To change from metres to centimetres weTo change from metres to centimetres we MULTIPLY BY 100.MULTIPLY BY 100. REMEMBERREMEMBER When we multiply by 100 we move eachWhen we multiply by 100 we move each digit two places to the left:-digit two places to the left:- H T U t h th 3 5 1 3.51m = 351cm3.51m = 351cm
- 28. 5.4m5.4m 6.2m6.2m 12.7m12.7m 3m3m 7.6m7.6m 0.54m0.54m 0.3m0.3m 540cm540cm 620cm620cm 1270cm1270cm 300cm300cm 760cm760cm 54cm54cm 30cm30cm x100x100 Try changing these measurements in metres into centimetresTry changing these measurements in metres into centimetres