Free worksheets · Grade 1
Count on in the 100s Worksheet
Read two numbers in the 100s and write the one that comes next.
Free printable
Count on in the 100s
26 questions, one page, US Letter. Print it and do it on paper.
On the sheet: Read the numbers in order. Each number goes up by 1. Write the number that comes next.
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About this worksheet
First graders count to 120 and beyond, starting from any number, not just from 1. Counting on from 147 asks a child to know what comes after it without starting over.
Each number goes up by 1, so the ones digit goes up by 1 too. The interesting moments are the ones that roll over: 109 to 110, and 119 to 120.
A worked example
101, 102, ___
- 101 + 1 = 102.
- So 102 + 1 = 103.
- Write 103 in the box.
Answer: 103
The common mistake
What it looks like: Writing 1010 after 109, or 200 after 119.
Why it happens: The child adds 1 to the ones as if it were a separate number, and doesn't see that 9 + 1 makes a new ten.
How to fix it: Say the numbers aloud: "one hundred nine, one hundred ten." When the ones reach 9, the next number starts a new ten and the ones go back to 0.
Ten minutes a day, on paper. We plan what comes next.
A printed page and a pencil. No screen, no login for your child. Snap a photo when they’re done: AI scores it, and what they missed comes back on the sheets that follow.
- Mon Count on in the 100s
- Tue What they missed, back again
- Wed The next step, when they’re ready
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