Grade 5 problem

Patterns · Grade 5

In the sequence 7, 12, 17, 22, each next number is 5 more. What is the twentieth term?

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Between the first and twentieth term there are 19 steps.
Add 19 × 5 to 7.

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Answer: 102

After the first term to the twentieth there are 19 additions of 5: 7 + 95 = 102.

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