Three Ways to Show a Number

Grade 2·2.NBT.A.3

Match the cards that show the same number — the numeral (like 305), the number in words (three hundred five), and the expanded form (300 + 5). Tap one card, then its match, and watch the pair link. Each round has three numbers to find. Aligned to Common Core 2.NBT.A.3 — reading and writing numbers to 1000 as base-ten numerals, number names, and expanded form.

About this activity

This free, interactive place-value activity helps children see how our number system is built around groups of ten, using numbers up to . It runs in any modern browser — on a tablet, a phone, or the classroom whiteboard — with nothing to download.

It is aligned to Common Core 2.NBT.A.3 in the Number & Operations in Base Ten strand. Children work at their own pace with warm, instant feedback, and there is no timer or score to rush them.

What's inside this activity

  • Designed for Grade 2 learners (ages about 5 to 9)
  • Common Core strand: Number & Operations in Base Ten
  • Aligned to Common Core standard 2.NBT.A.3

How to play

Children read the prompt and look at the ten-frames or blocks on the screen.

They fill, build, or choose to match the number being asked for.

A gentle check confirms a correct answer and invites another try when needed — calm, low-pressure practice throughout.

What your child practices

  • Seeing a two-digit number as a group of tens plus some extra ones
  • Building numbers up to from tens and ones
  • Reading and writing numbers and connecting them to a picture of the quantity
  • Noticing the patterns that make bigger numbers easier to understand

Learning goals

Understand a teen or two-digit number as some tens and some ones.

Compose and read numbers up to with confidence — the heart of Common Core 2.NBT.A.3.

Lay the base-ten foundation that multi-digit addition and subtraction depend on.

Frequently asked questions

What does the Three Ways to Show a Number activity teach?
Three Ways to Show a Number is a free interactive activity for Grade 2, focused on Number & Operations in Base Ten. Children play it right in the browser — no printing, login, or setup required.
Is Three Ways to Show a Number free to use?
Yes. Three Ways to Show a Number is completely free, with no signup and no paywall, on any tablet, laptop, or classroom whiteboard.
Which ages is this activity for?
It is designed for Grade 2 (Number & Operations in Base Ten) and works well for whole-class, small-group, or independent practice.