Place value (T1 W2)
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Place value is the value of where a digit is in a number. In a two-digit number, the first digit represents the 'tens' place, and the second digit represents the 'ones' place. For example, in the number 34, the '3' is in the tens place and represents 30, while the '4' is in the ones place and represents 4. Together, they make 34.
Let's look at the number 57. The '5' is in the tens place, so it represents 50. The '7' is in the ones place, so it represents 7. If we add these together, we get 50 + 7 = 57. This shows how each digit contributes to the overall value of the number.
Now, let's practice together. I will say a number, and you will tell me the value of each digit. For example, if I say 82, you will tell me that the '8' is worth 80 and the '2' is worth 2. Let's try with the number 46. What is the value of the '4'? What is the value of the '6'?
Now it's your turn! Solve the following problems on your own. Write down the value of each digit in the numbers below: 73, 29, and 51. Then, create your own two-digit number and write down the values of each digit.
Answer: 60
In the number 36, the '3' is in the tens place (30), and the '6' is in the ones place, but since it's in the tens place, it represents 60.
Answer: 24
In the number 24, the '2' is in the tens place, representing 20, while the '4' is in the ones place.
Answer: 50
The '5' in 58 is in the tens place, which means it represents 50.
Answer: 2
In the number 72, the '2' is in the ones place, so it represents 2.
Answer: Example: 45 - '4' is 40, '5' is 5.
The student should provide a two-digit number and explain the place value of each digit.
Answer: 90
The '9' in 91 is in the tens place, which means it represents 90.
Answer: 23
In the number 23, the '3' is in the ones place.
Answer: 70
The '7' in 87 is in the tens place, representing 70.