Estimating Decimal Products Effectively

The video tutorial teaches students how to estimate the products of decimal numbers. It begins with an introduction to the concept of estimation and its practical applications. The lesson then provides a detailed example of estimating the area of a farm by rounding decimal numbers to the nearest whole number before multiplying. Additional examples are given to reinforce the concept, demonstrating how to round decimals and calculate estimated products. The tutorial concludes with a summary of the key points covered.

What is the purpose of estimation?

• To avoid solving the problem

• To find an exact answer

• To quickly solve a problem when an exact answer isn't necessary

• To make a problem more complicated

If a girl is 4 feet tall and estimates a tree to be three times her height, what is the estimated height of the tree?

• 8 feet

• 10 feet

• 14 feet

• 12 feet

Tags

CCSS.5.NBT.A.4

When rounding 50.6 to the nearest whole number, what is the result?

• 53

• 52

• 51

• 50

Tags

CCSS.5.NBT.A.4

What is the rounded value of 7.3 to the nearest whole number?

• 9

• 8

• 7

• 6

Tags

CCSS.5.NBT.B.7

What is the estimated area of a farm that is 50.6 meters long and 7.3 meters wide?

• 365 square meters

• 360 square meters

• 350 square meters

• 357 square meters

Tags

CCSS.5.NBT.B.7

What is the estimated product of 6.75 and 8.56?

• 70

• 60

• 54

• 63

Tags

CCSS.5.NBT.A.4

When rounding 15.13 to the nearest whole number, what is the result?

• 17

• 16

• 15

• 14

Tags

CCSS.5.NBT.B.7

What is the estimated product of 15.13 and 3.2?

• 42

• 48

• 45

• 40

Tags

CCSS.5.NBT.A.4

What is the rounded value of 7.5 to the nearest whole number?

• 6

• 9

• 8

• 7

Tags

CCSS.5.NBT.B.7

What is the estimated product of 7.5 and 2.4?

• 16

• 17

• 15

• 14

Tags

CCSS.5.NBT.B.7