Estimating Multiplication Techniques

What is the main topic introduced in this lesson?

• Addition

• Rounding and Estimating

• Division

• Multiplication

Tags

CCSS.3.NBT.A.3

If you round 38 to the nearest ten, what do you get?

• 35

• 45

• 40

• 30

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

What is the estimated cost of 38 T-shirts at $23 each after rounding?

• $800

• $700

• $600

• $900

Tags

CCSS.4.NBT.B.5

What does the term 'overestimate' mean?

• Not estimating at all

• Estimating the exact value

• Estimating a value higher than the actual

• Estimating a value lower than the actual

Tags

CCSS.L.3.4C

CCSS.RF.3.3A

CCSS.RF.3.3B

CCSS.RF.4.3A

CCSS.RF.5.3A

What does the term 'underestimate' mean?

• Estimating a value lower than the actual

• Estimating a value higher than the actual

• Estimating the exact value

• Not estimating at all

Tags

CCSS.L.3.4B

CCSS.L.3.4C

CCSS.RF.3.3A

CCSS.RF.4.3A

CCSS.RF.5.3A

If a store averages $525 a day for 31 days, what is the rounded estimate of their monthly revenue?

• $17,000

• $16,000

• $18,000

• $15,000

Tags

CCSS.4.NBT.B.5

Why is the estimate of $15,000 considered an underestimate?

• Because 525 was rounded up

• Because 31 was rounded up

• Because 525 and 31 were both rounded down

• Because 525 and 31 were both rounded up

Tags

CCSS.4.NBT.B.5

What should the exact answer be in relation to the underestimate?

• Less than 15,000

• Equal to 15,000

• Exactly 15,000

• Greater than 15,000

Tags

CCSS.4.NBT.B.5

If you round 525 up to 600 and 31 up to 40, what type of estimate is this?

• No estimate

• Overestimate

• Exact estimate

• Underestimate

Tags

CCSS.4.NBT.B.5

What is the purpose of understanding overestimates and underestimates?

• To find the exact answer

• To ensure the estimate is accurate

• To know if the exact answer should be higher or lower than the estimate

• To avoid estimating altogether