Thousands to trillions
Choose a house size for numbers in the thousands, millions, billions or trillions.
Free maths tool
Place value houses tool
A free place value houses tool for reading large whole numbers by thousands, millions, billions and trillions.
Groups of three
Break each large number into three-digit groups so students can see the house structure.
Read aloud support
Press Read Number to hear the number spoken one house at a time.
Highlight each house
The tool highlights the active house while the number is being read.
What the tool does
The place value houses tool helps students break large whole numbers into readable groups instead of trying to decode every digit at once.
- type numbers up to thousands, millions, billions or trillions
- show each group of three digits in its place value house
- display the full number with commas
- read the number aloud by house name
- highlight each house as it is read
How teachers use it
Open it on a classroom screen, type a number, then ask students to name the houses before pressing Read Number.
- start with thousands before moving to millions or billions
- ask students to read the left-most group first
- pause on zero groups and discuss why some house names are skipped
- use the highlighted house to connect spoken words with digit groups
Why it is useful
Large numbers become easier to read when students treat them as house groups rather than a long string of digits.
- supports place-value language for large numbers
- connects comma grouping with spoken number names
- works as a model before students move to independent place-value practice
Frequently Asked Questions
Is the place value houses tool free?
Yes. Teachers, students and families can open the place value houses tool in a browser for free.
What number sizes does it support?
The tool has separate sections for thousands, millions, billions and trillions.
Does it read numbers aloud?
Yes. After a number is entered, the tool can speak each group with its house name and highlight the matching house.
Does it record student work?
No. It is an open modelling tool, not a scored practice activity or student-tracking page.