Adding Decimals

Maths
- Addition - The next step

Multiple Choice

Which of these best describes what we were learning about yesterday?

• Mental Addition of large numbers

• Column addition of 5 digit numbers

• Working with negative numbers

• Additions With no carrying

Today we are moving on...

Here is an example of one of yesterday's questions: 54 376 + 21 982 =

Using yesterday's technique, work out the answer to this on your board and show me

Multiple Choice

What answer did you get?

• 23 912

• 21 982

• 29 829

• Something completely different

So what could make additions more difficult?

​Let's do this on the board together... can we do it mentally?

Multiple Choice

Which of these facts is true about the decimal point?

• We keep it on the same place

• It doesn't matter if we miss it out

• It does the same job as a full stop

• You have to put them in your book in pen

Let's look at another

No hands up... everyone get ready with an answer in your head.

Fill in the Blanks

4.5 + 8.8 =

How is this different?

Let's work this out together on the board

Same or different?

Fill in the Blanks

3.63+4.99 =

Was there a way you could have done this mentally?

Now... here's a stinker

What do you notice about this question?

Let me show you how to do it on the board

and now it's your turn.

Write this on your board and work the answer out

OK... ready for some questions?

Work these out on your board and then put the answer in using your device. Check carefully before you enter your answer.

Fill in the Blanks

1.04 + 6.2 =

Fill in the Blanks

4.05 + 4.56 =

Fill in the Blanks

12.12 + 21.2 =

Fill in the Blanks

2.891 + 6.123 =

Fill in the Blanks

Stretch and Challenge:

2.316 +

= 3.956

Poll

What do you think a good lesson objective for today is?

• Column addition of 2 digit numbers

• The same as yesterday

• Column addition with decimal numbers

• Subtracting decimals

Thursday 27th September

LO: Column addition with Decimal Numbers

Page 20-21 - Set your work out neatly. Please ask if you need any help.