# Approximation - PowerPoint PPT Presentation

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Approximation. Objectives for the lesson : Rounding to 10 / 100 / 1000 Using decimal places and significant figures. Rounding to 10 / 100 / 1000. Round each of these numbers to the nearest 10 / 100 / 1000 101001000 246 1251 96 5 879 10045. Rounding to 10 / 100 / 1000.

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Approximation

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## Approximation

Objectives for the lesson :

Rounding to 10 / 100 / 1000

Using decimal places and significant figures

## Rounding to 10 / 100 / 1000

Round each of these numbers to the nearest 10 / 100 / 1000

101001000

246

1251

96

5

879

10045

## Rounding to 10 / 100 / 1000

Round each of these numbers to the nearest 10 / 100 / 1000

101001000

2462502000

1251

96

5

879

10045

## Rounding to 10 / 100 / 1000

Round each of these numbers to the nearest 10 / 100 / 1000

101001000

2462502000

1251126013001000

96

5

879

10045

## Rounding to 10 / 100 / 1000

Round each of these numbers to the nearest 10 / 100 / 1000

101001000

2462502000

1251126013001000

961001000

5

879

10045

## Rounding to 10 / 100 / 1000

Round each of these numbers to the nearest 10 / 100 / 1000

101001000

2462502000

1251126013001000

961001000

51000

8798809001000

10045100501000010000

## Decimal places and significant figures

Decimal places

Write the following numbers to 1 d.p and 2 d.p:

a.) 23.438

b.) 2.871

c.) 9.456

d.) 0.678

e.) 4.556

## Decimal places and significant figures

Decimal places

Write the following numbers to 1 d.p and 2 d.p:

a.) 23.438a.) 23.4b.) 23.44

b.) 2.871

c.) 9.456

d.) 0.678

e.) 4.556

## Decimal places and significant figures

Decimal places

Write the following numbers to 1 d.p and 2 d.p:

a.) 23.438a.) 23.4b.) 23.44

b.) 2.871a.) 2.9b.) 2.87

c.) 9.456

d.) 0.678

e.) 4.556

## Decimal places and significant figures

Decimal places

Write the following numbers to 1 d.p and 2 d.p:

a.) 23.438a.) 23.4b.) 23.44

b.) 2.871a.) 2.9b.) 2.87

c.) 9.456a.) 9.5b.) 9.46

d.) 0.678

e.) 4.556

## Decimal places and significant figures

Decimal places

Write the following numbers to 1 d.p and 2 d.p:

a.) 23.438a.) 23.4b.) 23.44

b.) 2.871a.) 2.9b.) 2.87

c.) 9.456a.) 9.5b.) 9.46

d.) 0.678a.) 0.7b.) 0.68

e.) 4.556

## Decimal places and significant figures

Decimal places

Write the following numbers to 1 d.p and 2 d.p:

a.) 23.438a.) 23.4b.) 23.44

b.) 2.871a.) 2.9b.) 2.87

c.) 9.456a.) 9.5b.) 9.46

d.) 0.678a.) 0.7b.) 0.68

e.) 4.556 a.) 4.6b.) 4.56

Significant figures

Write the following numbers to 1 s.f and 2 s.f:

a.) 3215

b.) 587

c.) 1.034

d.) 0.00559

e.) 293512

## Decimal places and significant figures

Decimal places

Write the following numbers to 1 d.p and 2 d.p:

a.) 23.438a.) 23.4b.) 23.44

b.) 2.871a.) 2.9b.) 2.87

c.) 9.456a.) 9.5b.) 9.46

d.) 0.678a.) 0.7b.) 0.68

e.) 4.556 a.) 4.6b.) 4.56

Significant figures

Write the following numbers to 1 s.f and 2 s.f:

a.) 3215a.) 3000b.) 3200

b.) 587

c.) 1.034

d.) 0.00559

e.) 293512

## Decimal places and significant figures

Decimal places

Write the following numbers to 1 d.p and 2 d.p:

a.) 23.438a.) 23.4b.) 23.44

b.) 2.871a.) 2.9b.) 2.87

c.) 9.456a.) 9.5b.) 9.46

d.) 0.678a.) 0.7b.) 0.68

e.) 4.556 a.) 4.6b.) 4.56

Significant figures

Write the following numbers to 1 s.f and 2 s.f:

a.) 3215a.) 3000b.) 3200

b.) 587a.) 600b.) 590

c.) 1.034

d.) 0.00559

e.) 293512

## Decimal places and significant figures

Decimal places

Write the following numbers to 1 d.p and 2 d.p:

a.) 23.438a.) 23.4b.) 23.44

b.) 2.871a.) 2.9b.) 2.87

c.) 9.456a.) 9.5b.) 9.46

d.) 0.678a.) 0.7b.) 0.68

e.) 4.556 a.) 4.6b.) 4.56

Significant figures

Write the following numbers to 1 s.f and 2 s.f:

a.) 3215a.) 3000b.) 3200

b.) 587a.) 600b.) 590

c.) 1.034a.) 1b.) 1.03

d.) 0.00559

e.) 293512

## Decimal places and significant figures

Decimal places

Write the following numbers to 1 d.p and 2 d.p:

a.) 23.438a.) 23.4b.) 23.44

b.) 2.871a.) 2.9b.) 2.87

c.) 9.456a.) 9.5b.) 9.46

d.) 0.678a.) 0.7b.) 0.68

e.) 4.556 a.) 4.6b.) 4.56

Significant figures

Write the following numbers to 1 s.f and 2 s.f:

a.) 3215a.) 3000b.) 3200

b.) 587a.) 600b.) 590

c.) 1.034a.) 1b.) 1.03

d.) 0.00559a.) 0.006b.) 0.0056

e.) 293512

## Decimal places and significant figures

Decimal places

Write the following numbers to 1 d.p and 2 d.p:

a.) 23.438a.) 23.4b.) 23.44

b.) 2.871a.) 2.9b.) 2.87

c.) 9.456a.) 9.5b.) 9.46

d.) 0.678a.) 0.7b.) 0.68

e.) 4.556 a.) 4.6b.) 4.56

Significant figures

Write the following numbers to 1 s.f and 2 s.f:

a.) 3215a.) 3000b.) 3200

b.) 587a.) 600b.) 590

c.) 1.034a.) 1b.) 1.03

d.) 0.00559a.) 0.006b.) 0.0056

e.) 29351a.) 30000b.) 29000

## Decimal places and significant figures

Decimal places

Write the following numbers to 1 d.p and 2 d.p:

a.) 23.438a.) 23.4b.) 23.44

b.) 2.871a.) 2.9b.) 2.87

c.) 9.456a.) 9.5b.) 9.46

d.) 0.678a.) 0.7b.) 0.68

e.) 4.556 a.) 4.6b.) 4.56

## To finish

Suggest pairs of numbers which are the same when rounded to :

2 dps and 2 sfs

1dp and 8 sfs

3dps and 5sfs

4dps and 2 sfs