Estimating Sums & Differences

• 500 - 200 = 300
• 600 - 200 = 300
• 600 - 200 = 400
• 500 - 200 = 200

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

• 400 + 200 = 600
• 500 + 200 = 600
• 500 + 200 = 700
• 400 + 200 = 700

Tags

CCSS.2.NBT.B.5

• 400 + 200 = 600
• 500 + 200 = 700
• 500 - 200 = 400
• 500 - 200 = 300

Tags

CCSS.2.NBT.B.7

• 700 - 200 = 500
• 800 - 200 = 600
• 800 - 300 = 500
• 700 - 200 = 500

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

• 900 - 300 = 600
• 900 - 200 = 700
• 1,000 - 200 = 800
• 900 + 300 = 1,200

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.B.4

CCSS.5.NBT.B.7

237 fifth graders and 346 fourth graders went on a field trip. Estimate how many more fourth graders were on a field trip than fifth graders.

• 200 more
• 109 more
• 100 more
• 110 more

Tags

CCSS.3.OA.D.8

CCSS.4.OA.A.3

CCSS.7.EE.B.3

Eastfield college has 1,537 students. Richland college has 2,785. Rounding to the HUNDREDS place, approximately how many fewer students does Eastfield college have than Richland college.

• 1,300
• 1,200
• 1,100
• 1,500

Tags

CCSS.3.NBT.A.1

CCSS.3.OA.D.8

CCSS.3.NBT.A.2

If you have 382, you might say you have ABOUT...

• 400
• 390
• 450
• 350

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

If you have 819, you might say you have approximately...

• 900
• 880
• 820
• 810

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Caleb has 5,233 books. Elizabeth has 2,354 books. Estimate how many fewer books Elizabeth has?

• 2,900.
• 3,000.
• 2,879.
• 2,870.

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.2