Break a number into its place-value parts (342 = 300 + 40 + 2) — or build it back.
Expanded form shows what each digit is really worth: 342 is 300 + 40 + 2. The child breaks a number into its place-value parts, or builds the parts back into the standard number. It cements place value and how digits carry different values by position. Best for Grades 2–4.
A free, no-signup, no-ads math game for Grades 2–4 — practising expanded-form, place-value, standard-form, decomposition. Play in your browser on the KidsDoMath games hub or explore more Arithmetic games.
More like this: Subtract Squad · Place Value Forge · Add Attack.