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Comparing 2-Digit Numbers
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What you will learn from this videoWhat you will learn
- How to compare 2-digit numbers using place value
- How to use the greater than, less than, and equal to symbols to compare numbers.
- How this knowledge can help us win games, collect stickers, and even have a snowball fight!
- Discussion Questions
Before Video
[Show a row of 8 pens with a row of 4 crayons under it. Spread out the 4 crayons so the row of crayons looks longer than the row of 8 pens.] How does the number of crayons compare to the number of pens?
ANSWERThere are more pens than crayons or there are fewer crayons than pens.
ANSWERThere are more blue counters than red counters or there are fewer red counters than blue counters.
ANSWERThere are more bird puppets than fish puppets or there are fewer fish puppets than bird puppets.
There are 2 tens and 7 ones. The number is 27.
3 tens blocks and 2 ones blocks
After Video
Use <, =, or > to compare 37 and 42. Explain how you compared.ANSWER37 has 3 tens. 42 has 4 tens. 42 has more tens. 42 > 37 or 37 < 42
25 has two tens. 29 has two tens. The digits in tens place are the same. So, we compare the ones place. 25 has 5 ones. 29 has 9 ones. 9 is greater than 5, so 29 > 25. Onawa read more books.
The number of red marbles, 53, has 5 tens and 3 ones. The number of blue marbles, 53, also has 5 tens and 3 ones. 53 = 53
ANSWERTyree is not correct. You have to look at which place each digit is in. 65 has 6 tens. 56 has 5 tens. 6 is greater than 5. 65 > 56
It is true that 23 is greater than 19. It is also true that 19 is less than 23. 19 < 23
- Vocabulary
- Compare numbers DEFINE
Look at a number to see if it is greater than, equal to, or less than another number.
- 2-digit number DEFINE
A number that has two digits, one in the tens place and one in the ones place.
- Place value DEFINE
The value of a digit based on its position in a number.
- Greater than sign (>) DEFINE
Sign used to show one number is more/greater than another number.
- Less than sign (<) DEFINE
Sign used to show one number is less than another number.
- Equal sign (=) DEFINE
Sign used to show that one number has the same value as another number.
- Base 10 blocks DEFINE
Blocks used to help students understand place value.
- Tens place DEFINE
The place in a number where the digit that tells the number of tens goes.
- Ones place DEFINE
The place in a number where the digit that tells the number of ones goes.
- Greatest place DEFINE
The place in a number that has the highest value. In a 2-digit number, the tens place is the greatest place.
- Compare numbers DEFINE
- Reading Material
- Practice Word Problems
- Practice Number Problems
- Lesson Plan
- Teacher Guide