Rounding Numbers and Rules

The video tutorial explains how to round numbers to the nearest ten and hundred using both a number line and formal rounding rules. It provides examples with numbers 584, 907, and 98, demonstrating the process of identifying the closest rounding value and applying the rules. The tutorial emphasizes rounding up when the digit to the right is five or more and rounding down otherwise. It concludes with a note on always rounding up when the value is exactly in the middle.

What is the first step in rounding a number to the nearest ten using formal rules?

• Identify the digit in the ones place.

• Identify the digit in the thousands place.

• Identify the digit in the hundreds place.

• Identify the digit in the tens place.

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When rounding 584 to the nearest ten, which two numbers is it between?

• 570 and 580

• 560 and 570

• 580 and 590

• 590 and 600

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Using formal rules, what happens to the digit in the tens place when rounding 584 to the nearest ten?

• It increases by one.

• It decreases by one.

• It stays the same.

• It becomes zero.

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What is the result of rounding 584 to the nearest hundred?

• 700

• 800

• 500

• 600

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When rounding 907 to the nearest ten, which number is it closer to?

• 915

• 905

• 900

• 910

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What is the result of rounding 907 to the nearest hundred?

• 1100

• 800

• 900

• 1000

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When rounding 98 to the nearest ten, which number is it closer to?

• 90

• 95

• 100

• 105

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What is the result of rounding 98 to the nearest hundred?

• 0

• 100

• 150

• 50

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What happens when a number is exactly in the middle on a number line?

• Round to the nearest even number.

• Choose randomly.

• Always round up.

• Always round down.

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According to formal rules, what should you do if the digit to the right is a five?

• Ignore it.

• Round up.

• Round down.

• Round to the nearest even number.

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