Ratio Table Builder Game
Fill blank cells in ratio tables while keeping the same proportions.
Math puzzle challenges
Loading Ratio Table Builder…
Instructions, device progress and accessibility
Choose Easy, Normal or Hard; use Practice or the shared UTC Daily seed. Enter answers on a keyboard or touchscreen, use Hint or Undo if needed, and press Check answer. Results save on your device when browser storage is available. Hints and Undo mark assisted rounds.
Local progress is checked when play begins.
How to play Ratio Table Builder
Fill blank cells in ratio tables while keeping the same proportions. Start with Easy to learn the rules, then choose Normal or Hard for more steps. Work through every displayed value before pressing Check answer. Hints and Undo are available, but assisted rounds do not replace an unaided best score.
Math explained: Ratios & Proportions
If A:B = 2:3 and one row shows A = 8, the multiplier is 8 ÷ 2 = 4. Therefore B = 3 × 4 = 12.
Use the related calculators to practise calculations separately or verify the underlying mathematical method. The daily puzzle is deterministic for each UTC calendar day and difficulty; Practice creates new puzzles.
Worked example
If A:B = 2:3 and one row shows A = 8, the multiplier is 8 ÷ 2 = 4. Therefore B = 3 × 4 = 12.
Tips for improving accuracy
Look for the scale multiplier in the known column first. Apply that same multiplier to the missing column. Check dimensions and units as well as the number itself. The game works on desktops, tablets and phones without installing an application.
Frequently asked questions
What makes a ratio table proportional?
Each row is formed by multiplying both parts of the base ratio by the same number.
Are decimal answers required?
No. The puzzles use whole-number ratios and expect exact whole-number answers.