Starter A litre of water weighs 1 kg

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Starter: A litre of water weighs 1 kg, what is the density of water

Starter: A litre of water weighs 1 kg, what is the density of water in SI units?

Converting Between Units Outcomes: To be able to convert between different units eg. from

Converting Between Units Outcomes: To be able to convert between different units eg. from imperial to metric when given the conversion factor how to leave an answer to the correct decimal place or significant figure

In your assignment, you will be asked to show the workings of your calculations

In your assignment, you will be asked to show the workings of your calculations You will lose marks if you do not show your workings Write out the question Show all your workings

1 litre is equal to 1. 76 pints. How many pints is 3½ litres

1 litre is equal to 1. 76 pints. How many pints is 3½ litres 1 litre of milk 1 pint of milk

How many pints is 3½ litre? 1 litre = 1. 76 pints 3½ litres

How many pints is 3½ litre? 1 litre = 1. 76 pints 3½ litres = 3. 5 x 1. 76 3½ litres = 6. 16 pints

Problem: 1 litre is equal to 1. 76 pints. A restaurant requires 30 pints

Problem: 1 litre is equal to 1. 76 pints. A restaurant requires 30 pints of milk, how many litres of milk should they order? Show your workings. Use conversion factor 1 litre = 1. 76 pints

How to round your number using decimal places

How to round your number using decimal places

Rather then write out all these numbers we sometimes approximate the answer By rounding

Rather then write out all these numbers we sometimes approximate the answer By rounding it off to a certain number of decimal places

Round the following numbers to 2 decimal places: 3. 14159 15360 12. 446 0.

Round the following numbers to 2 decimal places: 3. 14159 15360 12. 446 0. 0197 0. 00067 3. 005

Round the following numbers to 3 decimal places: 3. 14159 15360 12. 446 0.

Round the following numbers to 3 decimal places: 3. 14159 15360 12. 446 0. 0197 0. 00067 3. 005 Which is the better approximation?

How to round your Answer using Significant Figures

How to round your Answer using Significant Figures

Consider the number 368249 significant means: having meaning. the 3 is the first significant

Consider the number 368249 significant means: having meaning. the 3 is the first significant digit, because it tells us that the number is 3 hundred thousand something. What is the third significant figure?

the rules for rounding up are: • If the next number is 5 or

the rules for rounding up are: • If the next number is 5 or more, we round up. • If the next number is less than 5 we do not round up.

Round the number 368249 to 1 sf 2 sf 3 sf 4 sf 5

Round the number 368249 to 1 sf 2 sf 3 sf 4 sf 5 sf

For numbers less then zero eg 0. 0058763, the 5 is the first significant

For numbers less then zero eg 0. 0058763, the 5 is the first significant digit What is the third significant figure?

Round the number 0. 0058763, to: 1 sf 2 sf 3 sf 4 sf

Round the number 0. 0058763, to: 1 sf 2 sf 3 sf 4 sf 5 sf

Write the number 3. 14159 to 3 s. f. and to 3 d. p.

Write the number 3. 14159 to 3 s. f. and to 3 d. p.

3 significant figures are usually adequate for the calculations we are doing Don’t round

3 significant figures are usually adequate for the calculations we are doing Don’t round off any numbers until the final answer State how many significant figures you have rounded the answer to eg: 30 pints = 30 X 0. 56818 30 pints = 17. 0454 litres 30 pints = 17. 0 litres (3 s. f)