A two-digit number is composed by combining tens and ones, so that, for example, 4 tens and 7 ones make 47, represented as ; the position of each digit determines its value. This understanding includes numbers from 10 through 99, including numbers with zero ones, and distinguishes a digit’s place value from its face value; it does not extend to hundreds, decimals, or more general place-value systems.
To compose a two-digit number, put the tens digit first and the ones digit second.
Example: Compose 4 tens and 7 ones.
So, 4 tens and 7 ones make .
The digit has a face value of 4, but because it is in the tens place, its value is . The digit is in the ones place, so its value is .
Click a topic below to practice the foundational skills you'll need, learn the steps, or master this skill
Earned ?