Grade 3 Think Up Unit 2 & 3

Front

What is value?

Back

Value refers to how much something is worth.

Front

What is the base ten place-value system?

Back

The base ten place-value system is a numerical system used to represent numbers based on the powers of ten.

Front

What does rounding mean?

Back

Rounding means to approximate a number to the nearest ten, hundred, thousand, etc.

Front

What is the place value of hundred thousands?

Back

The place value of hundred thousands is the position to the left of the ten thousands.

Front

What is the place value of ten thousand?

Back

The place value of ten thousand is the position to the left of the one thousands.

Front

What is the significance of place value in mathematics?

Back

Place value is significant because it determines the value of a digit based on its position in a number.

Front

How do you round a number to the nearest ten?

Back

To round a number to the nearest ten, look at the digit in the ones place. If it is 5 or greater, round up; if it is less than 5, round down.

Front

What is the difference between the value of a digit and its place value?

Back

The value of a digit is the actual worth of the digit in a number, while its place value is the position it holds in the number that determines its worth.

Front

How do you identify the place value of a digit in a large number?

Back

To identify the place value of a digit, count the positions from right to left, starting with ones, tens, hundreds, and so on.

Front

What is the role of zero in the base ten place-value system?

Back

Zero acts as a placeholder in the base ten place-value system, indicating the absence of a value in a particular position.