Reading & Writing Large Numbers

Split into periods, then read group by group

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About This Practice

The trick to reading big numbers is to split them into periods first, then read group by group. Tap “Change Number” to see different twelve-digit numbers broken into groups — and pay attention to how zeros inside each group are handled.

See how large numbers are read period by period, with special rules for zeros inside and at the end of each group.

EasyEstimated Time: 12minreadingwritingperiods

How to Play

  1. Look at the number on screen and split it into groups from the right.
  2. Read the highest period first, saying its period name after it.
  3. Read the next period the same way.
  4. Continue down to the plain ones group and read everything together.
  5. Tap “Change Number” and watch how zeros in different positions are read.

Learning Objectives

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