Order numbers to 100

Ordering numbers to 100 means determining their relative magnitude and arranging a set of whole numbers from least to greatest or greatest to least, including numbers with different numbers of digits and numbers that share a tens digit. This understanding relies on the base-ten structure—comparing tens first and ones when the tens are equal—and can be represented on a number line; it supports later work with place value, comparison symbols, and computation.

Detailed Explanation: Order numbers to 100

To order numbers from least to greatest, find the number with the smallest value first and the largest value last.

A one-digit number is less than any two-digit number.
For two-digit numbers, compare the tens first.
If the tens are the same, compare the ones.

Example: Order $24,\ 7,\ 42,\ 29$ from least to greatest.

$7$ has only one digit, so it is less than all the two-digit numbers.
Compare $24,\ 42,\ 29$ $24, 42, 29$ by their tens:
- $24$ has $2$ ten.
- $42$ has $4$ tens.
- $29$ has $2$ tens.
Numbers with $2$ $2$ tens come before the number with $4$ $4$ tens.
Compare $24$ $24$ and $29$ $29$ . They both have $2$ $2$ tens, so compare the ones:
- $4$ ones is less than $9$ ones, so $24<29$ .

The numbers from least to greatest are:

7,\ 24,\ 29,\ 42

Learn by doing: Order numbers to 100

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Number Sense - Ordering 4 Integers (both)

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Order numbers to 100

Detailed Explanation: Order numbers to 100

Learn by doing: Order numbers to 100

Practice with unlimited practice problems

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Number Sense - Ordering 4 Integers (both)