estimation

Question 1

What is estimation in mathematics?

Answer 1

Estimation is the process of finding an approximate value that is reasonably close to the actual value.

Question 2

True or False: Estimation can help simplify complex calculations.

Answer 2

True

Question 3

Fill in the blank: When estimating sums, round each number to the nearest _____.

Answer 3

ten

Question 4

What is the purpose of rounding when estimating?

Answer 4

Rounding simplifies numbers to make calculations easier and faster.

Question 5

Estimate the sum of 48 and 37 by rounding to the nearest ten.

Answer 5

80

Question 6

What is the estimated difference between 95 and 47 when rounded to the nearest ten?

Answer 6

50

Question 7

True or False: Estimation is only useful for addition and subtraction.

Answer 7

False

Question 8

Which of the following is a method of estimation? A) Rounding B) Exact calculation C) Division

Answer 8

A) Rounding

Question 9

Fill in the blank: To estimate a product, you can round each factor to the nearest _____.

Answer 9

ten

Question 10

Estimate the product of 6 and 9 by rounding.

Answer 10

50

Question 11

What is the estimated quotient of 87 divided by 4 when rounded?

Answer 11

20

Question 12

True or False: Estimating can provide a quick check on the reasonableness of an answer.

Answer 12

True

Question 13

How do you estimate a mixed number?

Answer 13

Round each part of the mixed number to the nearest whole number.

Question 14

Estimate the sum of 2.3 and 3.7 by rounding to the nearest whole number.

Answer 14

6

Question 15

When estimating percentages, what is a common rounding technique?

Answer 15

Round to the nearest 10%.

Question 16

True or False: Estimation can be used to check the accuracy of a calculator’s output.

Answer 16

True

Question 17

What is a common estimation strategy for large numbers?

Answer 17

Use scientific notation or round to a more manageable number.

Question 18

Fill in the blank: The estimated total cost of items priced at $4.99, $5.49, and $6.99 is approximately _____.

Answer 18

$17

Question 19

What is the estimated value of 124 rounded to the nearest hundred?

Answer 19

100

Question 20

Estimate the difference of 256 and 89 by rounding to the nearest ten.

Answer 20

170

Question 21

True or False: The estimated sum of 15.3 and 4.7 is 20.

Answer 21

True

Question 22

What is the first step in estimating a calculation?

Answer 22

Identify the numbers to be estimated and determine how to round them.

Question 23

Estimate the product of 15 and 8 by rounding.

Answer 23

120

Question 24

Fill in the blank: When estimating, it is important to consider the _____ of the numbers involved.

Answer 24

magnitude

Question 25

What is the estimated difference of 432 and 198 when rounded to the nearest hundred?

Answer 25

300

Question 26

True or False: Estimation can only be performed with whole numbers.

Answer 26

False

Question 27

Which of the following is a benefit of estimation? A) More time-consuming B) Simplifies calculations C) Reduces accuracy

Answer 27

B) Simplifies calculations

Question 28

What is the estimated total of 23.5, 47.2, and 12.3 when rounded to the nearest whole number?

Answer 28

83

Question 29

Estimate the average of 10, 15, and 20 by rounding.

Answer 29

15

Question 30

Fill in the blank: When estimating, rounding should always be done to the nearest _____ that makes sense for the context.

Answer 30

unit

Question 31

Estimate the sum of 99 and 101 by rounding.

Answer 31

200

Question 32

What is the estimated value of 5.75 when rounded to the nearest whole number?

Answer 32

6

Question 33

True or False: Estimation requires exact calculations.

Answer 33

False