Learning goal

Find the missing factor by dividing the product by the known factor. Every answer is a whole number.

Sample exercises

18 × □ = 90 Answer: 5
18 × □ = 846 Answer: 47
18 × □ = 864 Answer: 48
18 × □ = 486 Answer: 27
18 × □ = 468 Answer: 26
18 × □ = 720 Answer: 40

How it works

Choose a title and 1–12 sheets. Each sheet uses the next edition number. Print the puzzle first, then reveal the answers for a separate teaching copy.

Print the question sheet before revealing answers. A new edition changes the exercise selection and order, while keeping the same learning goal.

Updated 23 October 2026 · Denny Lim

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