Mathematics

Beginner

50 mins

Teacher/Student led

Learning Goals

Learning Outcomes

Lesson Files

+80 XP

What you need:
IWB/Projector/Large Screen

Place Value to 100: Tens and Units

Explore how two-digit numbers are made from tens and units. Use place-value blocks to build numbers, see how a digit's position changes its value, and record your work in columns.

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1 Getting Started
2 Watch and Notice
3 Try It Together
4 Sketch the Columns in Your Copy
5 Class Challenge
6 What Did We Notice?
7 What's Next
Pupil practice

1 - Getting Started ~4 mins

Illustration for Getting Started How many pupils are in our class today? Is that number closer to ten, or closer to a hundred?

Have a think, then put up your hand. We are going to look at how every two-digit number is made from a number of tens and a number of leftover units.

👇 Mark your steps as done as you complete them.

+5 XP

2 - Watch and Notice ~9 mins

The place-value blocks show one number at a time in a tens column and a units column. Watch how many ten-rods and how many single cubes make each number.

👇 Mark your steps as done as you complete them.

+10 XP

3 - Try It Together ~7 mins

Now it's our turn — let's build some numbers together using the T and U columns.

When I call out a number under 100, one of you will come up to the board and build it with ten-rods and single cubes. The rest of us will check — how many tens, how many units?

Build the number

+15 XP

4 - Sketch the Columns in Your Copy ~2 mins

COPYBOOK MOMENT

Illustration for Sketch the Columns in Your Copy In your maths copy, draw two place-value columns and label them T and U.

Then write each of these numbers into the columns, one under the other:

Read each number aloud after you write it.

+10 XP

5 - Class Challenge ~9 mins

Today we build these numbers together at the board: 30, then 47, then 80, then 99.

Key point

For each one, work out how many tens and how many units make the number, build it, and check it.

Build the number

+15 XP

6 - What Did We Notice? ~3 mins

MATHS TALK

Why does where a digit sits — in the tens column or the units column — change what it is worth?

Think about the 4 in 47 and the 4 in 74. Same digit. Is it worth the same amount?

+10 XP

7 - What's Next ~2 mins

Today you built two-digit numbers from tens and units, and you saw that where a digit sits decides what it is worth.

Coming up

Next time we add a new column on the left — the hundreds — and build numbers all the way up to 1,000.

+5 XP

Pupil practice

Module 1 · Place Value: Whole Numbers to 1,000 and Rounding Number

Lesson 1 · Place Value to 100: Tens and Units

Download Activity Book page (PDF)

End of lesson

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Place Value to 100: Tens and Units

Teacher Class Feed

1 - Getting Started ~4 mins

2 - Watch and Notice ~9 mins

3 - Try It Together ~7 mins

Build the number

4 - Sketch the Columns in Your Copy ~2 mins

5 - Class Challenge ~9 mins

Build the number

6 - What Did We Notice? ~3 mins

7 - What's Next ~2 mins

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