Skip Counting & Constant-Step Patterns (Grade 4)
A constant-step pattern grows (or shrinks) by the same amount each time — 3, 6, 9, 12 steps by 3.
Understanding skip counting & constant-step patterns
To extend it, find the step by subtracting one term from the next, then keep adding that step. Spotting the step is the whole game.
Seeing it in action
Worked example
Continue: 4, 8, 12, __.
Step = 8 − 4 = 4. Next = 12 + 4 = 16.
Find the constant step, then keep adding it.
A common mistake, and the fix
Guessing the rule from the first jump only.
4 → 8 could be “add 4” or “double”, but doubling 8 gives 16, not 12, so the rule is “add 4” and the next term is 12 + 4 = 16. Check the step between every pair of terms.
Try a few
5, 10, 15, __
7, 14, 21, __
30, 25, 20, __
step −5.
Number Current
A calm number-line game for placing whole numbers and extending patterns.
Try it in Numeris.
A short lesson, then practice with feedback on every answer.
Put the reasoning on paper.
Try six fraction, angle, perimeter and area questions with explained answers, for grades 4–6.
Free printable · 3 pagesText version (screen-reader friendly): Draw it. Explain it. Math sample
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