Make Numbers Make Sense

A free interactive place value game that helps kids understand how numbers are built.

Play for Free How It Works

Place Value Quest on a laptop and a tablet: a child builds 139 from blocks, and the digits 1, 3 and 9 appear on a hundreds-tens-ones board.

Why can place value be so difficult?

A child can read “139” perfectly and still not know what the 3 means. To them it may look like three unrelated digits — so 1 + 3 + 9 seems as good an answer as anything. The 5 in 50 and the 5 in 500 look identical. Zeros seem to mean “nothing”, and the jump from hundreds to thousands feels like a brand-new kind of number.

None of this is a memory problem. It is a missing mental model: a picture of how a number is built from groups.

What does 139 actually mean?

139 shown three ways: 1 hundred block, 3 ten-rods and 9 one-cubes; then 100 + 30 + 9; then the number 139.

100 + 30 + 9 = 139

The digit tells you how many. The place tells you how much each one is worth.

Read more in what is place value.

Start small. Build bigger.

The times-ten chain: 1 cube, a rod of 10, a flat of 100 and a big cube of 1,000, each made of ten of the one before.

10 ones make 1 ten. 10 tens make 1 hundred. 10 hundreds make 1 thousand. The same rule carries on forever: 1 → 10 → 100 → 1,000 → 10,000. In Place Value Quest, children see each step happen as ten blocks fuse into one bigger block.

More than just answering questions

Build numbers

Drag cubes, rods and flats onto a mat, and trade ten for one when a place fills up.

Break numbers apart

Split numbers into parts: 1,394 = 1,000 + 300 + 90 + 4.

Digit value

Find out what each digit is really worth: the 3 in 3,482 is 3,000.

Tricky zeros

Master numbers like 1,005, 2,040 and 7,090, where zeros hold the places.

Explore thousands

Ride the Number Elevator from ones all the way up to a million.

Number puzzles

Crack mystery numbers from clues and spot the mistakes in Robo-Clerk’s sums.

Four scenes from the game: the Digit Machine, the Number Elevator, a boss challenge and the number line.

Designed to build understanding, not just memorisation

Three panels: real blocks for 139, a place-value board showing 1, 3, 9, and the written number 139 = 100 + 30 + 9.

Every number is shown first as blocks — [1 hundred] [3 tens] [9 ones] — then on a place-value board, and only then as 100 + 30 + 9 = 139. The game draws on the idea of moving from concrete representations to visual models to abstract notation, an approach informed by established ways of teaching mathematics. How Place Value Quest works explains each step.

A 10-level number adventure

The ten worlds of Place Value Quest, from Ones Village to the Number Kingdom, joined by a winding path.
  1. Ones Village — Building numbers
  2. Tens Forest — Ones and tens
  3. Hundreds Castle — Hundreds
  4. Digit Factory — Digit position
  5. Zero Caverns — Three-digit numbers
  6. Thousands City — Thousands
  7. Trading Station — Four-digit numbers
  8. Space Station — Ten thousands and beyond
  9. Number Vault — Number detective
  10. Number Kingdom — The great number quest

Start the adventure at the top of the page ↑

Free to play

Free, with no subscription, no signup and no ads. Open the page and play — progress is saved on your device.

Play Place Value Quest

Built for parents who want more than worksheets

Worksheets check answers; Place Value Quest builds the understanding behind them — what each digit means, how numbers are constructed, why zeros matter, how thousands work, and how to write numbers in expanded form. A parent area shows which skills are strong and which need more practice.

How Place Value Quest works · For parents · Common questions