Rounding Numbers to Nearest Hundred

This video tutorial explains how to round the number 159 to the nearest 100 using two methods: digit analysis and a number line. The digit analysis method focuses on the digits in the hundreds and tens places to determine whether to round up or down. The number line method visually demonstrates the rounding process by showing where 159 falls between 100 and 200, confirming that it is closer to 200. Both methods conclude that 159 rounds up to 200.

What is the main focus when rounding the number 159 to the nearest 100?

• The units and tens places

• The hundreds and tens places

• The tens and thousands places

• The hundreds and units places

In the first method of rounding, what happens if the digit in the tens place is 5 or more?

• The hundreds digit is rounded down

• The tens digit is rounded down

• The hundreds digit is rounded up

• The hundreds digit remains the same

What is the result of rounding 159 to the nearest 100 using the first method?

• 100

• 200

• 150

• 250

Which number would 159 be rounded to if the tens digit was 4?

• 100

• 150

• 250

• 200

What is the significance of the tens digit in rounding to the nearest 100?

• It determines if the thousands digit stays the same or rounds up

• It determines if the tens digit stays the same or rounds up

• It determines if the units digit stays the same or rounds up

• It determines if the hundreds digit stays the same or rounds up

On a number line, what does each dash represent when rounding 159?

• An increase of 1

• An increase of 20

• An increase of 5

• An increase of 10

Where does the number 159 fall on the number line?

• Between 160 and 170

• Between 150 and 160

• Between 140 and 150

• Between 170 and 180

Why is 159 rounded up to 200 on the number line?

• It is an even number

• It is closer to 200

• It is exactly in the middle

• It is closer to 100

What is the purpose of using a number line in rounding?

• To subtract numbers

• To visualize the rounding process

• To multiply numbers

• To add numbers

What are the two methods discussed for rounding 159 to the nearest 100?

• Subtraction and addition

• Number line and addition

• Digit examination and number line

• Digit examination and subtraction