Growing and shrinking number patterns
Determine the rule of a growing or shrinking number pattern to 1000, extend it, and find a missing term. Unlimited questions, five difficulty levels, and a full worked solution every time — free.
Try one
What number is missing in the pattern?
551, 561, 571, 581, ___
Answer: 591
See one solved, step by step
What number is missing in the pattern?
445, 465, 485, 505, ___
📘 Worked solution
1The rule is add 20 each time.Look at how the numbers change from one to the next.
2505 + 20 = 525Apply the rule to the number right before the blank.
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