Rounding Two-Digit Numbers to the Nearest Ten

Why might you need to round numbers in real life?

• To avoid using decimals

• To increase the precision of measurements

• To get an estimate or simplify measurements

• To make calculations more complex

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What does it mean to round a number to the nearest 10?

• Find the closest odd number

• Find the closest multiple of 10

• Find the closest even number

• Find the closest multiple of 5

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Which multiple of 10 is 36 closest to?

• 30

• 50

• 35

• 40

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

When rounding 34 to the nearest 10, which multiple of 10 is it closest to?

• 20

• 50

• 30

• 40

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is the rule for rounding numbers that end in 5?

• Round to the nearest odd number

• Always round up

• Round to the nearest even number

• Always round down

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is 35 rounded to the nearest 10?

• 20

• 30

• 40

• 50

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Which multiple of 10 is 26 closest to?

• 30

• 35

• 20

• 25

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

When rounding 26 to the nearest 10, what do you get?

• 30

• 20

• 25

• 35

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Which multiple of 10 is 12 closest to?

• 0

• 10

• 30

• 20

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is 12 rounded to the nearest 10?

• 20

• 10

• 30

• 0

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3