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# Approximation - PowerPoint PPT Presentation

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 10 100 1000 246 1251 96 5 879 10045. Rounding to 10 / 100 / 1000.

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## PowerPoint Slideshow about 'Approximation' - shawn

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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

10 100 1000

246

1251

96

5

879

10045

### Rounding to 10 / 100 / 1000

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

10 100 1000

246 250 200 0

1251

96

5

879

10045

### Rounding to 10 / 100 / 1000

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

10 100 1000

246 250 200 0

1251 1260 1300 1000

96

5

879

10045

### Rounding to 10 / 100 / 1000

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

10 100 1000

246 250 200 0

1251 1260 1300 1000

96 100 100 0

5

879

10045

### Rounding to 10 / 100 / 1000

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

10 100 1000

246 250 200 0

1251 1260 1300 1000

96 100 100 0

5 10 0 0

879 880 900 1000

10045 10050 10000 10000

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

b.) 2.871 a.) 2.9 b.) 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.) 23.438 a.) 23.4 b.) 23.44

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

c.) 9.456 a.) 9.5 b.) 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.) 23.438 a.) 23.4 b.) 23.44

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

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

d.) 0.678 a.) 0.7 b.) 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.) 23.438 a.) 23.4 b.) 23.44

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

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

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

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

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.) 23.438 a.) 23.4 b.) 23.44

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

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

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

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

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

a.) 3215 a.) 3000 b.) 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.) 23.438 a.) 23.4 b.) 23.44

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

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

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

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

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

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

b.) 587 a.) 600 b.) 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.) 23.438 a.) 23.4 b.) 23.44

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

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

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

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

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

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

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

c.) 1.034 a.) 1 b.) 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.) 23.438 a.) 23.4 b.) 23.44

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

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

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

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

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

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

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

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

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

e.) 293512

### Decimal places and significant figures

Decimal places

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

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

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

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

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

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

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

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

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

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

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

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

### Decimal places and significant figures

Decimal places

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

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

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

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

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

e.) 4.556 a.) 4.6 b.) 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