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1st Grade Math
8. 1.OA.D.8
8.5 Complete the subtraction statement up to 10
Complete the Subtraction Statement Up to 10
Practice finding the missing number in subtraction statements up to 10 using pictures, ten-frames, and simple counting strategies.
What You'll Learn
Recognize the three parts of a subtraction statement, the starting number, the number taken away, and what is left.
Use pictures and counters to find a missing number in a statement like \( 8 - \Box = 3 \).
Count backward or forward on a number line to figure out the missing part of a subtraction fact.
Use a ten-frame to see how many counters are left after some are crossed out.
Check an answer by adding the missing number back to confirm the full statement is true.
What You'll Practice
1
Filling in missing minuends in subtraction equations
2
Completing subtraction statements with missing subtrahends
3
Solving for missing differences in equations up to 10
Why This Matters
Completing subtraction statements builds your number sense and helps you understand how numbers relate to each other. This skill is essential for mental math, checking your work, and solving word problems throughout elementary math.
This Unit Includes
1 Video lesson
Practice exercises
Learning resources
Skills
Subtraction
Number Sense
Missing Numbers
Mental Math
Fact Families
OH Curriculum Aligned