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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.

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Approximation

Approximation

Objectives for the lesson :

Rounding to 10 / 100 / 1000

Using decimal places and significant figures


Rounding to 10 100 1000

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 10001

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 10002

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 10003

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 10004

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 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 figures1

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 figures2

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 figures3

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 figures4

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 figures5

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


Decimal places and significant figures6

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.) 23.438 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


Decimal places and significant figures7

Significant figures

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


Decimal places and significant figures8

Significant figures

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


Decimal places and significant figures9

Significant figures

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


Decimal places and significant figures10

Significant figures

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


Decimal places and significant figures11

Significant figures

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

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


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