• 1st Grade
  • Math
  • About 10 minutes

Missing Numbers to 120

Count to 120. Write the missing numbers in the blue boxes.

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This is sheet #13324601.

How to do it

  1. Find a blue box.
  2. Look at the number before it, or the number above it.
  3. Write the missing number.

Teaching tip

Numbers in the same column end in the same digit, and each row down is 10 more. This sheet is aligned with Common Core 1.NBT.B.2.

Missing Numbers to 120 worksheet for 1st grade (tens and ones to 120), free printable
Printable preview

About this worksheet

A 1 to 120 chart with some numbers left out. Matches 1.NBT.A.1.

What kids practice

Place value is knowing that in 34, the 3 means 3 tens (30) and the 4 means 4 ones. It's the idea that makes every bigger math topic work, from adding two-digit numbers to money. In first grade, kids count to 120 and learn to see a number as tens and ones.

Watch for

  • Writing the number the way it sounds, so "forty-two" becomes 402.
  • Mixing up teen numbers, like writing 71 for seventeen.
  • Counting the rods as ones (counting 3 rods as 3 instead of 30).

It's free to print, with an answer key. See the full tens and ones to 120 guide for 1st grade.

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