Each problem presents a fact family triangle with sums up to 20 and equations with missing values. Students must determine each unknown number, combining fact family knowledge with computation skills for larger numbers.
This is the most challenging fact family printable in the series. Use for students who have demonstrated fluency with "Write All" formats and "Missing Numbers Within 10." Great for early finishers or enrichment.
Work through the first problem together. Show your child how to use the triangle numbers to figure out the missing values. If they get stuck, have them try the addition facts first, then use those to help with the subtraction facts.
This worksheet supports the following Common Core State Standards for Mathematics:
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Find the missing numbers in fact family equations with sums within 20. Challenges students to apply inverse operations with larger numbers.
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