FREE DEMO & PRACTICE GUIDE
P&G Digit Challenge practice.
Practise the calculation game: fill the empty slots, use each digit once and make the equation equal the target. Start with a free three-question demo.
No account required. The demo always uses the same questions.
Practice screen · calculation game
How the Digit Challenge works
Aon's digitChallenge practice guide describes equations built from addition, subtraction and multiplication. Digits run from 1 to 9, with no repeats within one equation. More than one arrangement can be valid, and difficulty changes with your answers.
In our game, select a gap and then a number on the yellow keypad. Fill every gap before confirming. Multiply before adding or subtracting; the number 0 is not an available digit.
Three worked equation examples
These original examples explain a method. The interactive demo uses its own fixed set.
Start with addition
□ + □ = 13
One solution is 9 + 4 = 13. Another is 8 + 5. Both use different digits, so both satisfy the rule.
Separate the product from the remainder
□ × □ − □ = 29
Look for a nearby product: 4 × 8 = 32. The remaining gap is 3, giving 4 × 8 − 3 = 29. Check that 4, 8 and 3 are all different.
Handle three factors
□ × □ × □ − □ = 209
Try a product slightly above the target: 9 × 6 × 4 = 216. Subtract 7 to get 9 × 6 × 4 − 7 = 209. Calculate the product first and then verify the last operation.
How our practice gets harder
Full practice starts with short equations and moves through longer addition/subtraction chains, mixed multiplication and finally three factors with a final addition or subtraction. In an error-free run, that last family first appears on question 12. Correct answers raise the training tier by one; errors lower it by two.
These transitions are calibrated against a practice reference we tested, not presented as an official P&G scoring formula. See how we build and check the exercises.
What to check before you confirm
- Repeated digits: a correct total is not enough if a digit appears twice.
- Order of operations: 4 + 3 × 2 is 10, not 14.
- Target size: three factors do not always mean a three-digit answer. A factor of 1 can be useful.
- Alternative answers: you do not need to find our example solution. Any arrangement that follows the rules and reaches the target is accepted.
Common questions
Is the Digit Challenge the P&G math test?
Digit Challenge is a common preparation name for the calculation game. P&G labels the equation activity Assessment #1 in its public interactive guide.
Is the demo free?
Yes. It contains three fixed questions, with no account required. A subscription unlocks new practice questions and saved results.
Can I practise without a timer?
Yes. Our full untimed calculation session has 30 questions. Timed practice lasts six minutes.
Sources and review
Rules were checked against the following public sources. Worked examples and practice advice are our own.
Independent preparation. Not affiliated with P&G or Aon.