Place Value: Tens and Ones
Place value tells us what each digit in a number is worth depending on its position. In a two-digit number, the left digit tells us tens and the right digit tells us ones.
What You Need to Know
Place value tells us what each digit in a number is worth depending on its position. In a two-digit number, the left digit tells us tens and the right digit tells us ones.
Key Concept Diagram
The ones place holds digits 0-9 (single units)
The tens place holds groups of 10
In the number 34: 3 is in the tens place (3 tens = 30) and 4 is in the ones place
We can show place value with tens frames, blocks, or bundles of sticks
Key Vocabulary
place value
The value of a digit based on its position in a number
tens
Groups of 10 — the second place from the right
ones
Single units — the first place from the right
digit
A single number symbol: 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9
Knowledge Check
Select the correct answer for each question. Click "Check Answer" to see if you are right.
Question 1
In the number 47, what does the 4 represent?
Question 2
What is the value of the ones digit in 63?
Question 3
Which number has 5 tens and 2 ones?
Question 4
What is 3 tens and 8 ones as a number?
Question 5
How many tens are in the number 70?
Key Concepts Summary
- ●The ones place holds digits 0-9 (single units)
- ●The tens place holds groups of 10
- ●In the number 34: 3 is in the tens place (3 tens = 30) and 4 is in the ones place
- ●We can show place value with tens frames, blocks, or bundles of sticks