Today we will be learning

• to read and write whole numbers up to at least 1000.

Mental Activity

We are going to practise adding numbers that are less 20.

Try this calculation.

+9 7

9 10 11 12 13 14 1615

We can do this by counting on.

We have counted on 7.

9 + 7

What strategies would you use to add

2 two-digit numbers quickly?

This is one way to do it.

• Split the tens.

• Split the units.

• Count on.

64 + 32 =Split the tens. Split the units.

60 + 30 + 4 + 2 =Count on.

60 + 30 = 90

90 + 4 = 94

94 + 2 = 96

96

Try these.Work out the answer before the question

disappears.

53 + 41 = 94

44 + 25 = 69

61 + 37 = 98

53 + 36 = 89

How well did you do at counting on?

Main Activity

Today we are going to learn how to write numbers in:

• figures• words.

Now say this number:

eight hundred and forty-seven

What digits do we need for this number?

8 4 7

Say the biggest number that you know.

8 4 7

What is each digit worth?

UTH

Say the number which the red arrow is pointing to.

617 621

626

200 203

Say this one.

199

Try this...

598593

601

Now try this...

403401

399

Group Work

Hundred square work.

Matching words and digits activity.

Hundred square work.