Count up by 50s
Look at the tens digit. It flips between two digits.
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89, 139, 189, 239, … Write the next three numbers and the rule.
Answer: Next three: 289, 339, 389; Rule: Start at 89; add 50 each time
102, 152, 202, 252, … Write the next three numbers and the rule.
Answer: Next three: 302, 352, 402; Rule: Start at 102; add 50 each time
195, 245, 295, 345, … Write the next three numbers and the rule.
Answer: Next three: 395, 445, 495; Rule: Start at 195; add 50 each time
Tip: Look at the tens digit. It flips between two digits.
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- Next in this topic Count up by 100s Third Class
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Curriculum
Common Core: 2.NBT.A.2
Print a free worksheet with answers (20 questions).
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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