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🔟 Counting in Tenths

Split a whole into ten equal parts and count in tenths — as fractions and as decimals like 0.1.

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

What you’ll learn

  1. One Whole, Ten PartsUnderstand one tenth as one of ten equal parts and place tenths on a number line.When a whole is split into 10 equal parts, each part is one tenth, written 1/10. Tenths appear on rulers, number lines, and measuring jugs, always as ten equal steps from 0 to one whole.
  2. Count the TenthsCount on and back in tenths and connect each tenth to its decimal.Counting in tenths goes up one tenth each step: 1/10, 2/10, 3/10, all the way to 10/10 = one whole. Each tenth also has a decimal name — 1/10 is 0.1, 5/10 is 0.5, 10/10 is 1.0.
  3. Tenths EverywhereRead tenths in real measurements and switch between fraction and decimal names.Tenths show up whenever we measure carefully — a jug in tenths of a litre or a ruler in tenths of a centimetre. Every tenth can be written two ways, as a fraction like 3/10 and as a decimal like 0.3.

Questions this course answers

On a number line from 0 to 1 split into tenths, where is 9/10?

9/10 is the ninth step, almost at the whole.

Grounded in trusted sources

  • Khan Academy Kids
  • PBS Kids — early math
  • Math is Fun
  • Britannica Kids

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

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