# Decimals and Rounding

Ermm yeah this powerpoint just contains some essential info such as:

Converting recurring decimals into fractions (A grade topic i think)

Long multiplication with decimals (i'm guessing it's C grade)

AND much much more

- Created by: gogos
- Created on: 20-06-10 18:52

## Slides in this set

### Slide 1

KS4 Mathematics

N4 Decimals and

rounding

* of 53 © Boardworks Ltd 2005…read more

### Slide 2

Contents

N4 Decimals and rounding

· AN4.1 Decimals and place value

· AN4.2 Terminating and recurring decimals

· AN4.3 Calculating with decimals

· AN4.4 Rounding

· AN4.5 Upper and lower bounds

* of 53 © Boardworks Ltd 2005…read more

### Slide 3

The decimal number system

The decimal number system allows us to use the digits 0 to 9

and the place value system to represent numbers of any size.

To represent whole numbers we label columns using

increasing powers of 10:

×10 ×10 ×10 ×10

s

nd

s

ds

nd

sa

its

ns

re

sa

ou

nd

Un

Te

ou

th

Hu

Th

n

Te

104 103 102 101 100

For example, 5 7 4 0 6

* of 53 © Boardworks Ltd 2005…read more

### Slide 4

The decimal number system

To represent fractions of whole numbers in our place value

system we extend the column headings in the other direction

by dividing by 10.

Starting with the tens column we have:

÷10 ÷10 ÷10 ÷10

s

hs

th

dt

nd

hs

its

ns

re

sa

nt

nd

Un

Te

Te

ou

Hu

Th

101 100 10-1 10-2 10-3

For example, 4 8 0 3 5

The decimal point

* of 53 © Boardworks Ltd 2005…read more

### Slide 5

The decimal number system

s

s

th

th

ds

nd

d

hs

re

its

ns

re

sa

nt

nd

nd

Un

Te

Te

ou

Hu

Hu

Th

102 101 100 10-1 10-2 10-3

2 4 3 5 7 4

WHOLE NUMBER PART DECIMAL PART

The decimal point separates the whole number part from the

fractional part.

We can think of the number in this example as:

5 7 4

243.574 = 200 + 40 + 3 + 10 + 100 + 1000

* of 53 © Boardworks Ltd 2005…read more

### Slide 6

Contents

N4 Decimals and rounding

· AN4.1 Decimals and place value

· AN4.2 Terminating and recurring decimals

· AN4.3 Calculating with decimals

· AN4.4 Rounding

· AN4.5 Upper and lower bounds

* of 53 © Boardworks Ltd 2005…read more

### Slide 7

### Slide 8

### Slide 9

### Slide 10

## Related discussions on The Student Room

- How to round decimals to the nearest 10, 100 and 1000? »
- Rounding »
- Need Help With Decimals »
- MathsWatch recurring decimals »
- a level maths rounding nos.! pls reply! »
- Calculator and issues with decimals »
- Uni rounding up system »
- Edexcel Mathematics A (Linear) from 2010 Specification »
- Mathematics GCSE Edexcel A - Topics »
- What's difference between significant figures and decimal ... »

## Similar Mathematics resources:

# Decimals and Rounding

Ermm yeah this powerpoint just contains some essential info such as:

Converting recurring decimals into fractions (A grade topic i think)

Long multiplication with decimals (i'm guessing it's C grade)

AND much much more

- Created by: gogos
- Created on: 20-06-10 18:52

## Slides in this set

### Slide 1

KS4 Mathematics

N4 Decimals and

rounding

* of 53 © Boardworks Ltd 2005…read more

### Slide 2

Contents

N4 Decimals and rounding

· AN4.1 Decimals and place value

· AN4.2 Terminating and recurring decimals

· AN4.3 Calculating with decimals

· AN4.4 Rounding

· AN4.5 Upper and lower bounds

* of 53 © Boardworks Ltd 2005…read more

### Slide 3

The decimal number system

The decimal number system allows us to use the digits 0 to 9

and the place value system to represent numbers of any size.

To represent whole numbers we label columns using

increasing powers of 10:

×10 ×10 ×10 ×10

s

nd

s

ds

nd

sa

its

ns

re

sa

ou

nd

Un

Te

ou

th

Hu

Th

n

Te

104 103 102 101 100

For example, 5 7 4 0 6

* of 53 © Boardworks Ltd 2005…read more

### Slide 4

The decimal number system

To represent fractions of whole numbers in our place value

system we extend the column headings in the other direction

by dividing by 10.

Starting with the tens column we have:

÷10 ÷10 ÷10 ÷10

s

hs

th

dt

nd

hs

its

ns

re

sa

nt

nd

Un

Te

Te

ou

Hu

Th

101 100 10-1 10-2 10-3

For example, 4 8 0 3 5

The decimal point

* of 53 © Boardworks Ltd 2005…read more

### Slide 5

The decimal number system

s

s

th

th

ds

nd

d

hs

re

its

ns

re

sa

nt

nd

nd

Un

Te

Te

ou

Hu

Hu

Th

102 101 100 10-1 10-2 10-3

2 4 3 5 7 4

WHOLE NUMBER PART DECIMAL PART

The decimal point separates the whole number part from the

fractional part.

We can think of the number in this example as:

5 7 4

243.574 = 200 + 40 + 3 + 10 + 100 + 1000

* of 53 © Boardworks Ltd 2005…read more

### Slide 6

N4 Decimals and rounding

· AN4.1 Decimals and place value

· AN4.2 Terminating and recurring decimals

· AN4.3 Calculating with decimals

· AN4.4 Rounding

· AN4.5 Upper and lower bounds

* of 53 © Boardworks Ltd 2005…read more

### Slide 7

### Slide 8

### Slide 9

### Slide 10

## Comments

No comments have yet been made

## Similar Mathematics resources:

## Related discussions on The Student Room

- How to round decimals to the nearest 10, 100 and 1000? »
- Rounding »
- Need Help With Decimals »
- MathsWatch recurring decimals »
- a level maths rounding nos.! pls reply! »
- Calculator and issues with decimals »
- Uni rounding up system »
- Edexcel Mathematics A (Linear) from 2010 Specification »
- Mathematics GCSE Edexcel A - Topics »
- What's difference between significant figures and decimal ... »

## Comments

No comments have yet been made