Ordering Numbers to 1000
Compare and order numbers up to 1000 using >, =, and < symbols, based on place-value understanding
What a learner can do afterwards
- Compare two three-digit numbers by examining hundreds first, then tens, then ones
- Use >, =, and < correctly to record comparisons of three-digit numbers
- Order a set of numbers up to 1000 from smallest to largest
The lesson
To compare two three-digit numbers, look at the hundreds digit first. Whichever number has more hundreds is the bigger number. If the hundreds match, compare the tens next. If the tens match too, compare the ones.
Compare 456 and 231. Both numbers have three digits, so start with the hundreds: 4 and 2. Since 4 is more than 2, 456 is bigger. We write this as 456 > 231.
The pointy end of > and < always faces the smaller number, like a mouth eating the bigger pile of food. If the hundreds tie and the tens tie too, the ones digit breaks the tie.
Compare hundreds first, then tens, then ones, and use >, <, or = to show which number wins.
Watch it
Where it sits
Where this leads
Jobs that lean on this skill. Follow one to see everything it is built on.
8 questions wait behind this lesson, each with its answer explained. Every answer feeds the sky: stars light as they are learned, and dim when it is time to come back.