Count by 2s
Look at how each number changes. Write the next three numbers and the rule.
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15, 17, 19, 21, 23, … Write the next three numbers and the rule.
Answer: Next three: 25, 27, 29; Rule: Start at 15; add 2 each time
27, 29, 31, 33, 35, … Write the next three numbers and the rule.
Answer: Next three: 37, 39, 41; Rule: Start at 27; add 2 each time
51, 53, 55, 57, 59, … Write the next three numbers and the rule.
Answer: Next three: 61, 63, 65; Rule: Start at 51; add 2 each time
Tip: Look at how each number changes. Write the next three numbers and the rule.
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Curriculum
Common Core: 1.NBT.A.1
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