Counting Within 1,000 Worksheets for 2nd Grade: Missing Numbers

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Grade 2MathCounting & Number SenseCCSS 2.NBT.A.2

Skill: Counting by 1s and 10s within 1,000 across hundreds

Preview of the Counting Within 1,000: Missing Numbers printable worksheet
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Teaching tips and what to try next

Aimed at second graders who count past 100 and read three-digit numbers aloud. A long strip of paper with your own number line, from 190 to 210 for example, makes the hundred jump visible before the worksheet. Strengthen the pattern with Skip Counting by 5s, 10s and 100s and connect it to digits in Writing Three-Digit Numbers in Words.

10 versions, each with its own answer key

Same skill and layout, a fresh set of problems in every version, so children can keep practicing without repeating a page. Problems are not repeated between versions unless a skill has only a small number of possible problems (for example, the addition facts within 10).

Download all 10 versions (one PDF)All 10 answer keys (PDF)

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About this worksheet

Second graders learn to count all the way to 1,000. The hardest moments are the jumps to a new hundred, like going from 199 to 200 or from 390 to 400, where children often write 1,100 or 3,100 by mistake. This second-grade worksheet focuses on exactly those spots.

The page has twelve rows of seven boxes. In the first six rows, children count forward by 1s, and every row crosses into a new hundred, such as 296, 297, 298, 299, 300, 301, 302. In the last six rows, children count forward by 10s, and every row also crosses a hundred, such as 560, 570, 580, 590, 600, 610, 620. The first number in each row is filled in, and three of the other boxes are empty. All numbers stay below 1,000. Each of the ten versions has new rows and its own answer key.

How to use it: count a row out loud together before writing. When the hundreds digit changes, stop and ask, "What comes after nine tens?" Showing the change with base-ten blocks, where ten tens are traded for one hundred, explains why the tens and ones go back to zero. If your child is unsure about a blank in the middle of a row, counting back from the next filled box is a good check.

The answer key shows every missing number. For counting by 5s and 100s, try our Skip Counting by 5s, 10s and 100s worksheet. For the place value behind the patterns, try our Hundreds, Tens, and Ones Place Value worksheet.