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🪜 Counting by 6s, 7s, and 9s

Count in multiples of 6, 7, 9, 25, and 1,000 — the stepping stones that make times tables and big-number work feel easy.

3
lessons
~15 min
to learn
🔢 Math
subject
Ages 6–12
level
Start the course →

What you’ll learn

  1. Counting in 6s and 7sSkip count by 6s to at least 72 and by 7s to at least 84.Counting by 6s and 7s makes bigger hops: 6, 12, 18, 24 and 7, 14, 21, 28. Everyday groups like six-packs of eggs and seven-day weeks make these patterns easier to picture, and they build the six and seven times tables.
  2. Counting in 9sSkip count by 9s and use the digit-sum pattern to check answers.Counting by 9s makes hops of nine: 9, 18, 27, 36, 45. A magic pattern helps: the tens digit climbs while the ones digit falls, and the two digits of every multiple of 9 always add up to 9.
  3. Counting in 25s and 1,000sSkip count by 25s and by 1,000s.Counting by 25s lands on 25, 50, 75, 00 and repeats, and four hops make 100 — just like four quarters make a dollar. Counting by 1,000s takes the biggest strides of all: 1,000, 2,000, 3,000.

Questions this course answers

For every multiple of 9, the two digits add up to…

9, 18, 27, 36… the digits always sum to 9.

Grounded in trusted sources

  • Khan Academy Kids
  • National Council of Teachers of Mathematics (NCTM)
  • NRICH — University of Cambridge
  • Britannica Kids

Every Wunder lesson is built from real, reputable sources — never invented.

Related Math courses

👣Counting by 2s, 5s, and 10s🧮Counting by 4s, 8s, 50s, and 100s🔢Counting in Hundredths🔟Counting in Tenths🪙Counting Money and Making Change🧮Counting Objects to 20☝️Counting One by One💯Counting to 100

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