Estimating Sums and Differences with Decimals

Mr. Pena introduces the concept of estimating sums and differences in decimals using word problems. He provides examples, such as estimating the total cost of items bought by Miss Kate and calculating change from a purchase at Dollar Tree. The video concludes with a practice problem for students to solve independently.

What is the main topic discussed in the video?

• Multiplying and dividing decimals

• Calculating exact sums and differences

• Estimating sums and differences in decimals

• Estimating sums and differences in whole numbers

How much did Miss Kate spend on the box of cereal?

• $3.74

• $3.00

• $3.50

• $4.00

Which of the following is closest to the cost of the toothbrushes?

• $1.00

• $1.25

• $0.75

• $0.50

What is the estimated cost of the pound of apples?

• $0.50

• $0.75

• $1.25

• $1.00

How much did Miss Kate approximately spend on the pack of Oreos?

• $4.00

• $3.50

• $3.29

• $3.00

What is the total estimated expenditure of Miss Kate?

• $11.00

• $10.00

• $9.00

• $8.00

How much did Mr. Pena spend at Dollar Tree?

• $14.00

• $14.50

• $15.00

• $14.56

If Mr. Pena pays with a $20 bill, how much change should he receive?

• $5.50

• $5.00

• $4.50

• $4.00

What is the estimated cost of the bookmark bought at the book fair?

• $1.00

• $1.25

• $0.75

• $0.50

What is the estimated cost of the graphic novel bought at the book fair?

• $13.00

• $12.50

• $13.50

• $12.00