Rounding and estimation (1.3-1.6)

Estimating is to....

• find the exact answer

• find something close to the correct answer

• find the sum

Round 271,009 to the nearest hundred-thousand.

• 300,000

• 270,000

• 200,000

• 271,000

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 809,050 to the nearest hundred-thousand.

• 900,000

• 809,000

• 800,000

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 282,582 to the nearest hundred-thousand.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 48,300 to the nearest ten-thousand.

• 40,000

• 50,000

• 48,000

• 48,300

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Round 1,200 to the nearest thousand.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Is 572 closer to 500 or 600?

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Estimate the sum: 43 +22

• 55

• 50

• 60

• 20

Estimate the sum: 54 + 92

• 146

• 120

• 130

• 140

Estimate the sum: 123 + 456

• 579

• 600

• 650

• 450