Learning goal

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

Sample exercises

20 × □ = 100 Answer: 5
20 × □ = 940 Answer: 47
20 × □ = 960 Answer: 48
20 × □ = 540 Answer: 27
20 × □ = 520 Answer: 26
20 × □ = 800 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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