Lexy teaches kids how to find the hundreds, tens and ones in a number, one step at a time. Kids practice with friendly hints, then show what they know in a 5-question quiz. Quiz scores go to HFT Classroom automatically.
A breaking apart thousands hundreds tens ones worksheet that has 3rd graders build four-digit numbers from their parts and then split them back into place value boxes. Answer key included for fast, no-prep practice.
Students use this expanding numbers worksheet to write 3- and 4-digit numbers in expanded form, switch back to standard form, and fix a mistake. Made for 3rd grade with an answer key included.
This Thousands Hundreds Tens Ones Worksheet asks 3rd graders to chart four-digit numbers, rebuild numbers from their parts, and explain a place value mistake. An answer key is included for fast, no-prep practice.
The Place Value Party Place Value Activity lets 1st to 3rd Grade students spin numbers, build them with base-ten cards and write expanded form. Answer key included.
This tens place value worksheet helps 3rd grade students name what a tens digit is worth, with number items, write-your-own challenges, word problems and an answer key.
This 3.NBT.1 Common Core Activity lets 3rd Grade students round numbers to the nearest 10 or 100 by sorting 24 cards into Round Up and Round Down, with an answer key included.
In this Blast Off With Numbers Base Ten Words Expanded Form Activity, students will read and write numbers to 1000 using base-ten numerals, number names, and expanded form.
The Let's Make a Number Hundreds Tens One Activity has 1st to 3rd grade students build and compare three-digit numbers with cards and a place value mat. Answer key included for quick checking.
This round it up or down ice cream activity has 3rd and 4th grade students match number scoops to cones by rounding to the nearest ten and hundred. Answer key included for quick checking.
In this Scooping Up Hundreds Rounding Activity, students use place value understanding to round whole numbers to the nearest 100.
Hundreds, tens and ones to the rescue!
In 3rd grade, base ten turns into a problem-solving tool. Students use place value to round numbers to the nearest 10 or 100, to add and subtract within 1,000, and to multiply one-digit numbers by multiples of 10, like 4 × 60 = 240. They break numbers apart into expanded form, such as 2,563 = 2,000 + 500 + 60 + 3, so big numbers feel manageable. The click comes when a student rounds 487 to 500, estimates an answer first, and catches their own mistake because the real answer was way off.
Base ten is the foundation for all the big-number math ahead. These moves build it strong.
Have kids build a number with base ten blocks, then write it in expanded form underneath. Next, change one digit and ask what happened to the total. Building and rewriting the same number connects the blocks to the digits.
Why it works: going from real objects to pictures to symbols is a core recommendation of the U.S. Department of Education's elementary math guide.
Try it withBreaking Apart Thousands Hundreds Tens Ones WorksheetWorksheetsOpen it →Use a short on-screen lesson to walk through finding the value of each digit, then pause and have kids try a few on whiteboards. A clear model followed by quick practice keeps everyone on track.
Why it works: showing first, practicing together, then letting kids try alone is the "gradual release" model teachers have relied on for decades (Pearson and Gallagher, 1983).
Try it withDetermining Place Value Micro LessonMicro LessonsOpen it →Rounding fades fast if it only lives in one unit. Put two rounding problems on the board every morning for a few weeks, nearest 10 and nearest 100. A minute a day keeps it sharp for estimating later.
Why it works: short practice spread over several days beats one long session, according to a large review of learning research (Dunlosky and colleagues, 2013).
Try it withRound it Up or Down Ice Cream ActivityActivitiesOpen it →Numbers are more fun when there is a party, a rocket or an ice cream cone involved.
ActivitiesPass party cards and build numbers together, then read them out loud in hundreds, tens and ones.
Open Place Value Party Place Value Activity →
ActivitiesMatch numbers in standard form, word form and expanded form before the rocket launches.
Open Blast Off With Numbers Base Ten Words Expanded Form Activity →
ActivitiesRound each number on a scoop to the nearest hundred and stack the cone that matches.
Open Scooping Up Hundreds Rounding Activity →Teacher favorites right now: Determining Place Value Micro Lesson, Breaking Apart Thousands Hundreds Tens Ones Worksheet and Expanding Numbers Worksheet.
Base ten means our number system is built on groups of ten: ten ones make a ten, ten tens make a hundred and ten hundreds make a thousand. Third graders use this to round, add, subtract and multiply by tens.
Use a number line and ask which ten or hundred the number is closer to. If the digit to the right is 5 or more, round up; if it is less than 5, round down.
Expanded form shows a number as the sum of the value of each digit. For example, 732 is 700 + 30 + 2.
Use coins (pennies, dimes and dollars) or bundles of straws. Ask your child to build a number, then round it to the nearest ten or hundred and explain how they decided.
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