1 Adding and Subtracting with Decimals.notebook · January 09, 2015 Oct 3011:40 Reintroduction to...

1 Adding and Subtracting with Decimals.notebook

1

January 09, 2015

Oct 30­11:40

Reintroduction to Decimals

L.O.• all pupils can remember what a decimal is

• all pupils can add decimals• most pupils can subtract decimals

• some pupils can predict what will happen when multiplying with decimals

Oct 30­11:40

What is a decimal?

Main 1: what a decimal is

Oct 30­11:41

Tell me 5 facts about this number

10.71304

Main 1: what a decimal is

Oct 30­11:40

Which of these numbers is bigger?0.1 or 0.30.01 or 0.0030.72 or 0.80.5 or 0.40

Put the numbers on a number line to check your answers

Main 1: what a decimal is

Oct 30­11:40

Reintroduction to Decimals

L.O.• all pupils can remember what a decimal is

• all pupils can add decimals• most pupils can subtract decimals

• some pupils can predict what will happen when multiplying with decimals

Oct 30­11:41

Main 2: add decimals

How would you add the numbers 3491 and 442?

1 Adding and Subtracting with Decimals.notebook

2

January 09, 2015

Oct 30­11:41

Main 2: add decimals

So how do you think you would add the numbers 3.491 and

4.42?

Oct 30­11:41

Main 2: add decimals

Using the same method add these decimal numbers together:

Oct 30­11:41

Main 2: add decimals

Using the same method add these decimal numbers together:

Oct 30­11:41

Main 2: add decimals

Using the same method add these decimal numbers together:

Oct 30­11:41

Main 2: add decimals

On you IWB, answer these decimal addition questions...

Oct 30­11:40

Reintroduction to Decimals

L.O.• all pupils can remember what a decimal is

• all pupils can add decimals• most pupils can subtract decimals

• some pupils can predict what will happen when multiplying with decimals

1 Adding and Subtracting with Decimals.notebook

3

January 09, 2015

Oct 30­11:41

Main 3: subtract decimals

How would you subtract the numbers 3491 and 442?

Oct 30­11:41

Main 3: subtract decimals

So how do you think you would subtract the numbers 3.491 and

4.42?

Oct 30­11:41

Using the same method subtract these decimal numbers:

Main 3: subtract decimals

Oct 30­11:41

Using the same method subtract these decimal numbers:

Main 3: subtract decimals

Oct 30­11:41

Using the same method subtract these decimal numbers:

Main 3: subtract decimals

Oct 30­11:41

Main 3: subtract decimals

On you IWB, answer these decimal subtraction questions...

1 Adding and Subtracting with Decimals.notebook

4

January 09, 2015

Oct 30­11:40

Reintroduction to Decimals

L.O.• all pupils can remember what a decimal is

• all pupils can add decimals• most pupils can subtract decimals

• some pupils can predict what will happen when multiplying with decimals

Oct 30­11:41

Main 4: multiplying with decimals

What do you think will happen when 5 is multiplied by 0.5?

What do you think will happen when 5 is divided by 0.5?

What is 5 + 0.5?

What is 5 - 0.5?

Oct 30­11:41