Count up by 100s
Only the hundreds digit changes.
See worked examples
81, 181, 281, 381, … Write the next three numbers and the rule.
Answer: Next three: 481, 581, 681; Rule: Start at 81; add 100 each time
280, 380, 480, 580, … Write the next three numbers and the rule.
Answer: Next three: 680, 780, 880; Rule: Start at 280; add 100 each time
151, 251, 351, 451, … Write the next three numbers and the rule.
Answer: Next three: 551, 651, 751; Rule: Start at 151; add 100 each time
Tip: Only the hundreds digit changes.
Curriculum
Common Core: 2.NBT.A.2
On paper: this skill is in the printable pack Grade 3 Common Core Math: Number and Operations, with an answer key.
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