Aon games / Digit Challenge

Aon Digit Challenge practice

Only the answer is shown. Fill the blanks with digits 1 to 9, each used once, to make the sum right.

One full free game, then a Aon pass ($4.99 for 30 days, paid once) for unlimited practice. Built from Aon's own candidate practice sheet for this challenge and the screenshots in Aon's P&G case study. Screens, shapes and colours are ours.

How Digit Challenge works

• A sum such as _ + _ - _ = 15 appears with its blanks empty. Tap digits to fill the blanks from left to right, then submit.
• Each digit from 1 to 9 can be used once per sum. The sums use adding, subtracting and multiplying; brackets are worked out first.
• Many sums have more than one right answer. Any that works counts.
• Right answers bring longer sums with brackets and multiplying; misses bring shorter ones.

Time and scoring

5 minutes. Aon says the challenge adapts: right answers bring harder items, misses easier ones. It does not publish how this becomes your score. Practice moves one level up for a right answer and one down for a miss.

Tips

• Start with the biggest part: with (_ × _) - _ - _ = 55, find two digits whose product is just above 55, then make up the gap.
• For a subtraction, the first digit must be larger than the answer; that narrows it straight away.
• Use the clear button rather than fighting a wrong start.

Questions

Other Aon challenges