Estimating Sums and Differences

Estimate the sum of 37+99 by rounding to the nearest tens

• 120
• 150
• 140
• 136

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

Estimate the sum of 52+59 by rounding to the nearest tens

• 110
• 100
• 111
• 90

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

Estimate the sum of 120+190 by rounding to the nearest hundreds

• 100
• 200
• 0
• 300

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

Estimate the sum of 327+431 by rounding to the nearest hundreds

• 700
• 600
• 758
• 800

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

Estimate the difference of 470-289 by rounding to the nearest hundreds

• 300
• 100
• 181
• 200

Tags

CCSS.3.NBT.A.1

CCSS.3.OA.D.8

Estimate the difference of 7,900-2,999 by rounding to the nearest thousands

• 6,000
• 4,000
• 5,000
• 3,000

Tags

CCSS.3.NBT.A.1

CCSS.3.OA.D.8

CCSS.3.NBT.A.2

Tracy ordered 325 pet toys and 165 bags of dog food for her new pet store. Which is the best estimate of the total number of items Tracy ordered?

• 400
• 500
• 600
• 700

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

There was 926 people at basketball tournament. 607 people left before noon. Which is the best estimate of the number of people who stayed?

• 150
• 250
• 300
• 500

Tags

CCSS.3.OA.D.8

CCSS.4.OA.A.3

CCSS.7.EE.B.3