Find the missing number: addition to 100
Every number is 100 or less.
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□ + 16 = 18 What number goes in the box?
Answer: 2
17 + □ = 20 What number goes in the box?
Answer: 3
16 + □ = 18 What number goes in the box?
Answer: 2
Tip: Every number is 100 or less.
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Up next
- Next in this topic Find the missing number: subtraction to 100 Year 4
- Ready for more Find the missing number: addition to 50 Year 5
Curriculum
Common Core: 3.OA.A.4
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On paper: this skill is in the printable pack Grade 3 Common Core Math: Patterns and Algebraic Thinking, with an answer key.
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