Numbers to 1,000: Hundreds, Tens and Ones

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What this lesson covers

  • The numbers from 0 to 1,000 go in order, each one more than the last.
  • Each digit's place tells you what it is worth.
  • Ten ones make a ten, ten tens make a hundred, and ten hundreds make a thousand.
  • To compare two numbers, look at the biggest place first.
Key idea

Counting all the way to 1,000

  • The numbers from 0 to 1,000 go in order.
  • Each number is one more than the number before it.
  • After 99 comes 100. After 999 comes 1,000.
  • 1,000 is the first number with four digits.
Key idea

Hundreds, tens and ones

  • A three-digit number has a hundreds place, a tens place and a ones place.
  • In 347, the 3 is worth 300, the 4 is worth 40 and the 7 is worth 7.
  • 300 + 40 + 7 = 347.
  • 1,000 needs a fourth place: thousands. Ten hundreds make one thousand.
347 and 1,000 in place value columns
ThousandsHundredsTensOnes
347
1000
Key idea

Try it: build a number

Worked example

Read it, write it, build it

  • Say the hundreds first, then the tens and ones together.
  • A zero holds a place when there are none of that size.
NumberIn wordsBase 10 blocks
347three hundred and forty-seven3 hundreds, 4 tens, 7 ones
509five hundred and nine5 hundreds, 0 tens, 9 ones
860eight hundred and sixty8 hundreds, 6 tens, 0 ones
1,000one thousand10 hundreds
Key idea

Try it: build it with blocks

Key idea

Which number is bigger?

  • Start with the hundreds. More hundreds means a bigger number.
  • If the hundreds are the same, look at the tens.
  • If the tens are the same too, look at the ones.
CompareLook atBigger
625 and 571hundreds: 6 and 5625
438 and 483tens: 3 and 8483
752 and 759ones: 2 and 9759
Key idea

Try it: hop along to 1,000

Worked example

Putting numbers in order

  • Order 412, 98, 421 and 400 from smallest to largest.
  • 98 has no hundreds, so it is the smallest.
  • The others all have 4 hundreds. Look at the tens: 400 has 0, 412 has 1, 421 has 2.
  • Smallest to largest: 98, 400, 412, 421.

Common mistakes

  • In 352, the 5 is worth 5.
    The 5 is in the tens place, so it is worth 50.
  • Three hundred and six is written 3006.
    It is written 306. The 0 holds the tens place.
  • 98 is bigger than 412 because 9 is bigger than 4.
    98 has no hundreds. 412 has 4 hundreds, so 412 is bigger.

Your turn

1

What is the 6 worth in 462?

2

Write six hundred and four in numbers.

3

Which is the biggest: 739, 793, 379 or 397?

4

How many hundreds, tens and ones are in 850?

5

Put 506, 560 and 56 in order from smallest to largest.

Show answer

1. 60 2. 604 3. 793 4. 8 hundreds, 5 tens, 0 ones 5. 56, 506, 560

Summary

What to take away

  • Read the hundreds first, then the tens and ones.
  • A digit's place tells you what it is worth.
  • Compare from the biggest place.
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More in Number

Numbers to 1,000: Hundreds, Tens and OnesNotesCounting in Groups, Rounding and EstimatingNotesSkip Counting, Odd and Even NumbersNotesAdding and Subtracting up to 1,000NotesMultiplying and Dividing with GroupsNotesUnit Fractions: One Equal PartNotesComparing Fractions and Finding Equal OnesNotesAdding Fractions and Finding Fractions of NumbersNotesDollars, Cents and Giving ChangeNotes

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