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Place Value: Ones, Tens & Hundreds
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What you will learn from this videoWhat you will learn
- About place value with Ones, Tens and Hundreds.
- That any 3-digit number can be broken down into groups of hundreds, tens and ones.
- How this knowledge can help us have a bake sale, make fruit juice, and even make our very own ball pit!
- Discussion Questions
Before Video
Show students 4 tens blocks. Ask students to write the number that is represented by the blocks.ANSWER40.
52.
4 tens blocks and 7 ones blocks.
8 tens or 80; 8 is in the tens place, so its value is 8 tens or 80.
When I add 1 to 79, I add 1 to the 9 in the ones place and get 10. I write a 0 in the ones column and regroup 10 ones as 1 ten. Now I have 8 tens or 80. So when I add 1 to 79, I get 80.
After Video
What is the value of each digit in 378? How do you know?ANSWERThe digit 3 has a value of 3 hundreds, or 300, because it is in the hundreds place. The digit 7 has a value of 7 tens, or 70, because it is in the tens place. The digit 8 has a value of 8 ones, or 8, because it is in the ones place.
2 hundreds blocks, 5 tens blocks, 6 ones blocks.
405.
425; there are 12 tens. I can’t write a 2-digit number like 12 in the tens place, so I write 2 in the tens place and regroup 10 tens to be 1 hundred. Now I have 1 more hundred in the hundreds place.
When I add 1 to 399, I add 1 to the 9 in the ones place and get 10. I write a 0 in the ones column and regroup 10 ones as 1 ten. Now I have 10 tens, so I write a 0 in the tens column and regroup 10 tens as 1 hundred. Now I have 4 hundreds. So when I add 1 to 399, I get 400.
- Vocabulary
- Place value DEFINE
The value of a digit is based on its position in a number.
- Ones DEFINE
A place in the place-value system that has a value of 1.
- Tens DEFINE
A place in the place-value system that has a value of 10.
- Hundreds DEFINE
A place in the place-value system that has a value of 100.
- Digit DEFINE
A numeral from 0 to 9 that forms part of a number.
- More DEFINE
A greater number has more. When you have 10 more than a number, you are adding 10 to that number.
- Fewer DEFINE
A lesser number has fewer. When you have 10 fewer than a number, you are subtracting 10 from that number.
- Place value DEFINE
- Practice Word Problems
- Practice Number Problems
- Lesson Plan
- Teacher Guide
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Level 1
Represent 125 with base-ten blocks. Draw a picture.
Level 2
Draw 2 hundreds blocks and 3 ones blocks. Ask students to write the number that is represented by the blocks.
Level 3
Draw 3 hundreds blocks, 15 tens blocks, and 7 ones blocks. Ask students to write the number that is represented by the blocks and explain their answer.
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