Flashcard 2: 4.NBT.1, 4.NBT.2, 4.NBT.3, 4.NBT.4

Front

What is the value of the digit 4 in the number 4,650?

Back

The value of the digit 4 in the number 4,650 is 4,000.

Front

How do you compare two numbers?

Back

To compare two numbers, look at their place values starting from the leftmost digit. The number with the larger digit in the highest place value is greater.

Front

What is rounding, and how is it applied to numbers?

Back

Rounding is the process of adjusting a number to the nearest specified place value (e.g., nearest thousand, hundred). For example, 276,479 rounded to the nearest thousand is 276,000.

Front

What is the difference between two numbers?

Back

The difference between two numbers is found by subtracting the smaller number from the larger number.

Front

How do you calculate the total number of items sold over multiple years?

Back

To calculate the total number of items sold over multiple years, add the number of items sold in each year together.

Front

What is the process for estimating a total when given partial quantities?

Back

To estimate a total when given partial quantities, add the quantities together and round to the nearest specified place value if necessary.

Front

How do you find the number of items still needed to reach a goal?

Back

To find the number of items still needed to reach a goal, subtract the number of items already collected from the goal.

Front

What is the significance of place value in large numbers?

Back

Place value determines the value of each digit in a number based on its position (e.g., thousands, hundreds, tens, units). It is crucial for understanding the magnitude of numbers.

Front

What is the importance of estimating in mathematics?

Back

Estimating helps to quickly assess the size of a number or the result of a calculation, which can be useful for checking the reasonableness of an answer.

Front

How do you express a number in expanded form?

Back

A number in expanded form is expressed as the sum of each digit multiplied by its place value. For example, 4,650 = 4,000 + 600 + 50.