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Early Learners
Place Value: Hundreds, Tens, and Ones
Place Value: Hundreds, Tens, and Ones
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Place value helps us understand what each digit in a number means. In the number 342, the 3 is not just 3, it means 3 hundreds. The 4 means 4 tens, and the 2 means 2 ones. Learning hundreds, tens, and ones makes reading, writing, adding, and comparing numbers much easier.
Key Facts
- 1 hundred = 100 ones
- 1 ten = 10 ones
- 10 tens = 1 hundred
- 342 = 3 hundreds + 4 tens + 2 ones
- Place value goes from left to right as hundreds, tens, ones
- The value of a digit depends on its place in the number
Vocabulary
- Digit
- A digit is one symbol used to write numbers, such as 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9.
- Ones
- Ones are single units that count by 1.
- Tens
- Tens are groups of 10 ones.
- Hundreds
- Hundreds are groups of 100 ones or 10 tens.
- Place Value
- Place value is the value a digit has because of its position in a number.
Common Mistakes to Avoid
- Reading 305 as 35, which is wrong because the 0 holds the tens place and shows there are no tens.
- Thinking the 4 in 412 means 4 ones, which is wrong because the 4 is in the hundreds place and means 400.
- Forgetting to bundle 10 ones into 1 ten, which is wrong because place value groups numbers by tens.
- Writing digits in the wrong order, such as writing 624 for 462, which is wrong because each place changes the value of the digit.
Practice Questions
- 1 Write the number that has 5 hundreds, 3 tens, and 8 ones.
- 2 In the number 274, what is the value of the 7?
- 3 Lena has 2 hundreds blocks, 4 tens rods, and 6 ones cubes. Her friend has 2 hundreds blocks, 6 tens rods, and 4 ones cubes. Who has the larger number, and how do you know?