3rd grade Rounding and Place Value

What is the place value of the digit 2 in the number 2,345?

• 200

• 20

• 2000

• 20000

What is rounding in mathematics?

• Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was.

• Rounding is the method of increasing the value of a number to the nearest whole number.

• Rounding is the technique of removing all decimal points from a number.

• Rounding is the process of estimating a number by multiplying it by ten.

How do you 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.

• Always round up regardless of the ones place digit.

• Round down if the ones place digit is 4 or less, and round up if it is 6 or greater.

• Ignore the ones place and round to the nearest hundred.

How do you write the number 7,284 in word form?

• Seven thousand two hundred eighty-four.

• Seven thousand two hundred eighty-five.

• Seven thousand two hundred seventy-four.

• Seven thousand three hundred eighty-four.

What is the nearest ten for the number 448?

• 440

• 445

• 450

• 455

What is the significance of rounding in real-life applications?

• Rounding helps simplify numbers for easier calculations and estimations in everyday situations.

• Rounding is used to make numbers larger for better visibility.

• Rounding eliminates the need for calculations altogether.

• Rounding is primarily used in scientific research to increase accuracy.

What is the nearest hundred for the number 1,234?

• 1,100

• 1,200

• 1,300

• 1,400

What is the nearest ten for the number 523?

• 510

• 520

• 530

• 540

What is the nearest thousand for the number 84,502?

• 84,000

• 85,000

• 86,000

• 83,000

How do you round a number to the nearest hundred?

• Look at the digit in the tens place. If it is 5 or greater, round up. If it is less than 5, round down.

• Always round up regardless of the digit in the tens place.

• Round down if the digit in the tens place is 4 or less, and round up if it is 6 or greater.

• Ignore the tens place and round based on the hundreds place only.