 # 1.01 Read and write numbers

Lesson

## Ideas

Before continuing on in this lesson, check that you know how to read and write 5 digit numbers. Remember we use a zero place holder when our number has no digits in one or more places.

Do you remember the names of the place value columns?

## Read and write numbers to millions

In this video, we use a place value table to show how we can represent numbers in the hundreds of thousands. Expanded notation, or partitioning, is also used to show how we can break up large numbers by place value components.

### Exploration

Use the applet to write the numerals of the number using the sliders.

The sliders serve as the place value columns where we can write the digits of the given numeral.

### Examples

#### Example 1

Fill in the digits in the table to express the number five million, twenty six thousand and eighty five.

Worked Solution
Create a strategy

We can use a place value table to help us write the numeral.

Apply the idea

Five million means we have 5 millions.

Twenty six thousand means we have 2 ten thousands and 6 thousands.

Eighty five means we have 8 tens and 5 ones.

We can use 0 as a place holder for any place values we do not have.

In numerals, it is 5\,026\,085.

#### Example 2

How do we write 7\,200\,009 in words?

A
Seven million, two hundred thousand and nine
B
Seven million, nine hundred thousand and two
C
Seven hundred and twenty thousand and nine
D
Seven million, two hundred and nine
Worked Solution
Create a strategy

Use a place value table and read the number out loud.

Apply the idea

In words, it is "Seven million, two hundred thousand and nine".

So the correct answer is A.

Idea summary

In 6 digit numbers, the largest place value represents the hundreds of thousands column. 100\,000 is read as "one hundred thousand".

### Outcomes

#### VCMNA186

Recognise, represent and order numbers to at least hundreds of thousands