Place value to 1 000
A clear starting point, worked steps and space to practise.
Start here
Three-digit numbers use hundreds, tens and ones. A zero holds a place when there are none of that group.
Use a place-value chart. Keep the zero in 406: 46 is a different number.
1 Work through these steps
- Read the hundreds digit.
- Read the tens digit, including any zero.
- Read the ones digit.
- Add the place values to check.
2 Follow a worked example
Write 406 in expanded form.
Reduce diagram
Scroll across the diagram if needed. Keyboard users can focus the diagram and use the arrow keys.
- 4 hundreds = 400.
- 0 tens = 0; 6 ones = 6.
- 406 = 400 + 6.
3 Try it yourself
Show each step on paper or open Working out. Then check the answer.
-
Write 730 as hundreds, tens and ones.
Check answer 1
Answer: 7 hundreds, 3 tens and 0 ones
700 + 30 + 0 = 730.
Scratchpad · Not saved
Working out
Draw with a finger, pen or mouse, or type your working below.
Your working stays on this page. It is not submitted or saved, and clears when you leave or reload.
Check your understanding
Explain the worked example in your own words. Say why the method works, not just what the answer is.
Skills and explanation links
Key ideas taught here
- Three-digit numbers use hundreds, tens and ones. A zero holds a place when there are none of that group.
- Use a place-value chart. Keep the zero in 406: 46 is a different number.
Method and checking
For parents and teachers
- Ask your child to explain the method aloud before writing the answer.
- Use a real-life context at home, such as shopping, cooking, sport scores, maps or timetables.
- Praise clear working and checking, not only speed.
- Use counters, blocks, drawings and everyday objects before moving to written symbols.
Practise choosing a method from the information in the question. The examples here are Pi Leo Academy learning activities. Official NAPLAN testing takes place in Years 3, 5, 7 and 9; a topic appearing in these notes does not mean it is tested in NAPLAN.
These notes provide guided examples and practice; they do not certify completion of every curriculum requirement.