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Grade 3 Math · World 4: Sharing Station · Level 41
A Letter for the Unknown
Solve n × 6 = 42 and 35 ÷ n = 5.
Warm-up, learn, try it together, practice, then a quick check. About 15 minutes.
What children learn in Level 41
- A letter can stand for the unknown number. In n × 6 = 42, what is n?
- What times 6 is 42? 7 times 6 is 42, so n = 7. Check: 7 × 6 = 42.
- In 35 ÷ n = 5, think: 35 divided by what is 5? 5 times 7 is 35, so n = 7.
Georgia's K-12 Mathematics Standards:
- 3.PAR.3.7 — Use multiplication and division to solve problems involving whole numbers to 100. Represent these problems using equations with a letter standing for the unknown quantity. Justify solutions.