120 Chart

Give each child a copy for the math folder and post a big one on the wall. Start the day with a choral count that crosses 100, since that is where children hesitate. Point to a number near the top of the chart and have kids say the next ten. Use a transparent counter to build a path. Laminate for markers. The answer key shows the full chart when you switch to a practice mode.

The extra rows teach that the pattern does not break at 100. After the last cell of the tenth row comes 100, the next row starts a new hundred, and the shaded cells at row ends keep marking the tens. Children often say 'one hundred ten' wrong, or write extra zeros. Before this chart comes counting to 100. After it come 3-digit place value and skip counting by tens across 100.

Stay on 120 for first grade, since it covers the counting range many classes are expected to reach. Filled works as a reference and wall chart. Switch to Blank when a child is ready to write 101 to 120. Missing numbers is a fast check. For a variation, color 100 in red so the new row stands out.

Why do some classes count to 120 instead of 100?

Many first grade programs ask children to count, read and write to 120, so the chart keeps going two rows past 100. Check what your class or district asks for.

What do children get wrong after 100?

They write numbers by sound, so 'one hundred five' becomes a string of extra digits. Show that it is 100 plus 5 and read the row slowly with a finger.

Is this the same as the standard hundreds chart?

The layout is identical up to 100. It adds two rows below, so everything children learned about columns and rows still applies, and the tens column stays shaded.