 # 1.04 Read and write 3 digit numbers

Lesson

## Ideas

Can you recognise, read, model and write numbers to 100?

### Examples

#### Example 1

Write the amount shown with the blocks as a numeral.

Worked Solution
Create a strategy

Complete a place value table when counting the blocks.

Apply the idea

There is 1 hundreds block, 0 tens blocks, and 4 ones blocks.

So the amount shown is 104.

Idea summary

We can use a place value table to write the values of the given blocks.

## Read and write numbers up to 10 000

### Examples

#### Example 2

State the number one hundred and seventy two.

Worked Solution
Create a strategy

Think about how to use the numerals from 1 to 9 to fill out this place value table:

Apply the idea

"one hundred" means we have 1 hundred.

"seventy" means we have 7 tens.

"two" means we have 2 ones.

So the number is 172.

#### Example 3

What number is one hundred more than two hundred and ninety?

Worked Solution
Create a strategy

Write the number two hundred and ninety in the place value table:

Apply the idea

Two hundred and ninety is made up of 2 hundreds, 9 tens, and 0 ones.

Here is the complete table for two hundred and ninety:

To add one hundred we need to add a 1 in the hundreds place to become:

The number is 390.

Idea summary
• Think about the place value table when writing out numbers.

• Use 0 as a placeholder if a column is empty.

• When reading or writing a number in words, use the word "and" when you see a 0 placeholder.

### Outcomes

#### MA2-4NA

applies place value to order, read and represent numbers of up to five digits