Estimating using power of 10

Which one best describes an estimate?

• Exact answer
• Right answer 
• Close to the right answer
• Wrong answer

500 x 200

• 300
• 700
• 10,000
• 100,000

Tags

CCSS.5.NBT.B.5

30 x 50 

• 150
• 1500
• 80
• 800

Tags

CCSS.4.NBT.B.5

Estimate the sum: 43+22

• 55
• 60
• 50
• 20

Tags

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

Estimate the sum: 62+35

• 95
• 90
• 100
• 97

Tags

CCSS.3.NBT.A.2

CCSS.3.OA.D.8

Estimate the product of 99 X 7

• 70
• 700
• 7,000
• 7

Tags

CCSS.4.NBT.B.5

Estimate. 834 x 10=

• 80
• 800
• 8,340
• 8,000

Tags

CCSS.4.NBT.B.5

If you are estimating 92 x 12, which expression would be best to use?

• 100 x 20
• 100 x 30
• 90 x 12
• 90 x 10

Tags

CCSS.4.NBT.B.5

Which expression would be best to use for 62 x 23?

• 60 x 20
• 60 x 30
• 60 x 2
• 6 x 2

Tags

CCSS.4.NBT.B.5

ESTIMATE THE QUOTIENT:
423 ÷ 4= 

• 200
• 100
• 400
• 300

Tags

CCSS.4.NBT.B.6