Estimating Products of Whole Numbers

Estimate the product of 99 X 7

• 70
• 700
• 7,000
• 7

Tags

CCSS.4.NBT.B.5

Estimate. 62 X 3=

• 180
• 210
• 150
• 240

Tags

CCSS.4.NBT.B.5

Estimate. 834 x 10=

• 80
• 800
• 8,340
• 8,000

Tags

CCSS.4.NBT.B.5

Estimate. 272 X 5=

• 1,000
• 1,300
• 1,500
• 2,000

Tags

CCSS.3.NBT.A.1

CCSS.3.OA.D.8

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. 27 x 12

• 30
• 200
• 20
• 300

Tags

CCSS.3.OA.D.8

Why do we estimate numbers?

• We estimate because our math teachers say so.
• Estimating is on the STAAR test.
• Estimating makes math calculations easier.
• We estimate because it makes math more difficult.

Tags

CCSS.3.NBT.A.1

CCSS.3.OA.D.8

87 x 403
estimate 

• 40,000
• 36,000
• 45,000
• 36,00

Tags

CCSS.3.NBT.A.1

CCSS.3.NBT.A.3

CCSS.3.OA.D.8

Estimate:
27 x 12

• 30
• 200
• 20
• 300

Tags

CCSS.5.NBT.B.5