Estimating Quotients with Decimals and Whole Numbers

In this lesson on estimating quotients, the teacher presents three division problems and demonstrates how to estimate the results by adjusting the dividend, divisor, or both. The process involves using multiples and compatible numbers to simplify calculations, providing a range of possible answers. The lesson covers different methods for estimation, including rounding and adjusting numbers to make division easier. The teacher emphasizes the importance of understanding estimation to approximate answers before solving the actual problem.

What is the main goal of estimating quotients?

• To find an answer close to the true answer

• To make the problem more complex

• To find the exact answer

• To avoid doing any calculations

Which multiples of 7 are used to estimate 45.1 divided by 7?

• 42 and 49

• 7 and 14

• 21 and 28

• 56 and 63

What is the estimated quotient of 45.1 divided by 7 when using 42 divided by 7?

• 5

• 6

• 7

• 8

What number is 23 rounded to for estimating 674.8 divided by 23?

• 10

• 15

• 20

• 25

What is the estimated quotient of 674.8 divided by 23 when using 600 divided by 20?

• 25

• 35

• 30

• 20

What alternative number is 23 rounded to for another estimation method?

• 30

• 25

• 20

• 15

What is the estimated quotient of 674.8 divided by 23 when using 700 divided by 25?

• 25

• 30

• 32

• 28

What number is 19 rounded to for estimating 96.5 divided by 19?

• 22

• 18

• 20

• 15

What is the estimated quotient of 96.5 divided by 19 when using 100 divided by 20?

• 7

• 6

• 4

• 5

What is the next lesson number mentioned at the end of the video?

• 5.3

• 5.2

• 5.4

• 5.5