Place value (T3 W8)
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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, which means it represents 30, and the '4' is in the ones place, which means it represents 4. Together, they make 34.
Let's take the number 56. The '5' is in the tens place, so it represents 50. The '6' is in the ones place, so it represents 6. If we add these together, we get 50 + 6 = 56. We can also use blocks or drawings to show this: draw 5 groups of ten blocks for the '5' and 6 single blocks for the '6'. This visual representation helps us understand how the digits contribute to the total value.
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 72, what is the value of the '7'? Yes, it is 70! And what about the '2'? Correct, it is 2! Let's try a few more numbers: 45, 81, and 29. Remember to think about the tens and ones places.
Now it's your turn to work on a worksheet. You will see different two-digit numbers. For each number, write down the value of the tens digit and the ones digit. For example, for the number 63, you would write '60' for the tens and '3' for the ones. After completing the worksheet, we will review your answers together.
Answer: 40
In the number 47, the '4' is in the tens place, which means it represents 40.
Answer: 32
In the number 32, the '3' is in the tens place, representing 30.
Answer: 50
The '5' in 85 is in the tens place, so it represents 50.
Answer: 2
The '2' in 72 is in the ones place, so it represents 2.
Answer: 50
The tens digit '5' in 54 represents 50.
Answer: 30
In the number 30, the '0' is in the ones place.
Answer: 60 + 1
The number 61 consists of 60 (from the '6' in the tens place) and 1 (from the '1' in the ones place).
Answer: 70
In the number 87, the '7' is in the tens place, which means it represents 70.