Grade 3 math · B.3 · Find the Unknown
Find the missing number: multiplication and division
Think of the fact family. For 6 × □ = 42, ask: what times 6 makes 42?
See worked examples
16 ÷ □ = 2 What number goes in the box?
Answer: 8
16 ÷ □ = 8 What number goes in the box?
Answer: 2
□ × 8 = 40 What number goes in the box?
Answer: 5
Tip: Think of the fact family. For 6 × □ = 42, ask: what times 6 makes 42?
Curriculum
Common Core: 3.OA.A.4
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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