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What this sheet practices
Three related numbers are given, and students write the two addition and two subtraction facts they make. This is where addition and subtraction stop being separate topics.
Errors worth watching for
- Using the same two numbers twice in a fact family.
- Writing a subtraction fact that produces a negative number.
How to use it
- Set the difficulty. Easy narrows the range; challenge adds missing values or extra steps.
- Choose how many questions and how many fit on a page. Ten per page is the most readable default.
- Print, or save as PDF. Replace any single question with the circular arrow if it does not fit your group.
At a glance
About this generator
What is a fact family?
A set of facts using the same three numbers, such as 3, 5 and 8: 3 + 5 = 8, 5 + 3 = 8, 8 − 3 = 5, 8 − 5 = 3.
Does order matter?
No. All four correct facts count, in any order.
Can I print this worksheet on A4 paper?
Yes. Switch Paper to A4 in the settings panel. The layout recalculates the page height and keeps 0.5-inch margins, so nothing is cut off.
Is an answer key included?
The generator always produces an answer key and worked solutions. They are part of the pass; the student sheet can be previewed and printed for free.