Rounding Decimals

What is the purpose of rounding numbers?

• To increase the precision of numbers

• To simplify calculations and improve understandability

• To make numbers more complicated

• To change the value of numbers randomly

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What does rounding a number to the nearest 10 involve?

• Ignoring the number's value and guessing

• Deciding if the number goes up to the next ten or down to the previous ten

• Choosing to round up or down based on the ones place

• Deciding between moving up to the next hundred or down to the previous hundred

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Why might someone round a number?

• For the challenge of it

• To simplify calculations or when exact precision is not necessary

• To make it harder to understand

• Because they dislike the original number

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is the 'target' when rounding a number?

• The largest digit in the number

• A random digit chosen for fun

• The digit in the place you are rounding to

• The smallest digit in the number

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What happens to digits smaller than the 'target' in rounding?

• They are removed from the number

• They are increased by one

• They are left unchanged

• They are replaced with zeros

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

How do you decide whether to round up or down?

• Flip a coin

• Ask a friend

• If the digit right after the target is 5 or more, round up

• Always round down for simplicity

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is the result of rounding 24,623 to the nearest hundred?

• 25,000

• 24,500

• 24,600

• 24,000

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

After rounding 32.725 to the nearest whole number, what do you get?

• 33

• 32.7

• 30

• 32

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CCSS.5.NBT.A.4

What does rounding 65.7991 to the nearest hundredth yield?

• 65.80

• 65.79

• 66

• 65

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CCSS.5.NBT.A.4

Why is practicing rounding numbers important?

• To master the skill for practical use

• Because there's nothing else to learn

• To make math more difficult

• To forget the rules

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3