Each problem shows a fact family triangle with three numbers and four equations where some numbers are missing. Students use the triangle to determine each missing value, building early algebraic thinking skills.
Use after students have practiced writing all four facts. The missing-number format challenges students to think more deeply about fact family relationships. Great for differentiated instruction - pair with the "Write All" version for struggling learners.
Cover one of the three numbers in the triangle and ask your child to figure out which number is missing. Then have them complete the equations. This builds problem-solving skills in a structured way.
This worksheet supports the following Common Core State Standards for Mathematics:
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Fill in the missing numbers in fact family equations with sums within 10. Students use the triangle diagram to find each unknown value.
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