Expanded Form With Tens and Ones Worksheets for 1st Grade

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Grade 1MathPlace Value & RoundingCCSS 1.NBT.B.2

Skill: Writing two-digit numbers as tens and ones and in expanded form, and regrouping ones

Preview of the Expanded Form With Tens and Ones printable worksheet
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Teaching tips and what to try next

Right for first graders who can count to 100 and are starting to say what each digit in a two-digit number means. Children who write 314 for 3 tens 14 ones are copying digits, so build that problem with sticks and count again. Move on to comparing with Comparing Two-Digit Numbers (>, <, =) or add tens in Adding Multiples of 10.

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

First graders learn that the two digits of a number like 47 stand for different amounts: 4 tens and 7 ones. Writing a number several ways, such as 4 tens 7 ones and 40 + 7, helps children understand place value instead of just reading digits. This first-grade worksheet practices tens and ones in four short parts.

In Part A, children see a two-digit number and write how many tens and ones it has. In Part B, they do the reverse: they read tens and ones and write the number. Part C asks for expanded form, such as 63 = 60 + 3. Part D is the tricky one: it gives more than 9 ones, like 3 tens 14 ones, so children have to trade 10 ones for 1 ten before writing the number. Each part has six problems, and every number stays below 100. Each of the ten versions has new numbers and its own answer key.

How to use it: bundles of ten straws or craft sticks, plus a few loose ones, are perfect for this page. Build each number before writing it. For Part D, have your child count out the loose ones, wrap ten of them into a new bundle, and then count the tens and ones again. Saying the number both ways out loud, "34 is 3 tens and 4 ones," builds the habit.

The answer key gives every answer. For tens and ones with pictures, try our Place Value: Tens and Ones worksheet. For three-digit numbers, try our Hundreds, Tens, and Ones Place Value worksheet.