Count back by 100s
Each number is 100 less.
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765, 665, 565, 465, … Write the next three numbers and the rule.
Answer: Next three: 365, 265, 165; Rule: Start at 765; subtract 100 each time
714, 614, 514, 414, … Write the next three numbers and the rule.
Answer: Next three: 314, 214, 114; Rule: Start at 714; subtract 100 each time
800, 700, 600, 500, … Write the next three numbers and the rule.
Answer: Next three: 400, 300, 200; Rule: Start at 800; subtract 100 each time
Tip: Each number is 100 less.
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- Need a warm-up? Count by 5s to 1,000 Year 3
Curriculum
Common Core: 2.NBT.A.2
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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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