Rounding Concepts for 3rd Graders

The video tutorial explains rounding numbers to the nearest ten and hundred using number lines. It introduces strategies like circling the place value and using midpoints to determine which number to round to. The midpoint is compared to a roller coaster to help visualize rounding decisions.

What is the first step when rounding to the nearest ten?

• Circle the number word 'ten'

• Draw a vertical number line

• Underline the hundreds place

• Identify the midpoint

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Which two tens is the number 14 between?

• 0 and 10

• 20 and 30

• 10 and 20

• 5 and 15

Tags

CCSS.1.NBT.B.3

What is the midpoint between 10 and 20?

• 12

• 15

• 20

• 10

Tags

CCSS.HSN.CN.B.6

To which ten is the number 14 closer?

• 5

• 10

• 20

• 15

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is the first step when rounding to the nearest hundred?

• Circle the number word 'hundred'

• Draw a horizontal number line

• Identify the midpoint

• Underline the tens place

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Which two hundreds is the number 253 between?

• 150 and 250

• 200 and 300

• 100 and 200

• 300 and 400

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is the midpoint between 200 and 300?

• 300

• 275

• 225

• 250

Tags

CCSS.HSN.CN.B.6

To which hundred is the number 253 closer?

• 300

• 100

• 400

• 200

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What analogy is used to explain rounding when the number is at the midpoint?

• Crossing a bridge

• Climbing a hill

• Balancing scale

• Roller coaster

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What happens when you reach the top of the roller coaster in rounding?

• None of the above

• The number stays the same

• It's easier to round up

• You should always round down

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3