Quiz about Power of Ten and Rounding

Question 1

3.86 x 10³

Accepted Answer

3860

Answer

3.86000

Answer

386

Answer

38600

Question 2

102=

Accepted Answer

100

Answer

1,000

Answer

20

Answer

0.01

Question 3

What is the meaning of 10³?

Accepted Answer

10 x 10 x10

Answer

10 x 3

Answer

10 + 10 + 10

Answer

10 + 3

Question 4

Question 4.

Accepted Answer

c

Answer

a

Answer

b

Answer

d

Question 5

Which numbers are rounded correctly? Choose ALL the correct answers.

Accepted Answer

444 rounded to the nearest ten is 440.

Accepted Answer

361 rounded to the nearest hundred is 400.

Accepted Answer

547 rounded to the nearest hundred is 500.

Answer

255 rounded to the nearest ten is 250.

Question 6

Lorelai is planning a visit to Boston. The table shows how many miles Sally will drive on various days of her trip. She estimated that she will drive less than 1,200 miles on her trip there. Is Lorelai's estimate correct?

Accepted Answer

No, because the number of miles rounded is greater than her estimate.

Answer

Yes, because the number of miles rounded is less than her estimate.

Question 7

Rounding means...

Accepted Answer

making a number simpler, but keeping its value closer to what it was.

Answer

finding the exact answer.

Answer

always making a number smaller.

Answer

always making a number bigger.

Question 8

6 X 104

Accepted Answer

60,000

Answer

.06

Answer

60

Answer

6,000

Question 9

Express the following numbers as powers of ten:
100,000

Accepted Answer

105

Answer

104

Answer

106

Answer

107

Question 10

What is the exponential form of 10,000?

Accepted Answer

104

Answer

10 x 10 x 10 x 10

Answer

10 + 10 + 10 + 10

Answer

103

Question 11

ESTIMATE 12,000,000 to the nearest 10 million then express

as a single digit and as a power of ten.

Accepted Answer

$$1 imes10^7$$

Answer

$$12 imes10^5$$

Answer

$$12 imes10^7$$

Answer

$$2 imes10^6$$

Question 12

ESTIMATE 1,500,000 by rounding to the nearest millionth and then writing the answer as a single digit and a power of ten.

Accepted Answer

$$2 imes10^6$$

Answer

$$0.15 imes10^{-6}$$

Answer

$$1.5 imes10^7$$

Answer

$$1.5 imes10^6$$

Question 13

ESTIMATE -0.0000765 to the nearest ten millionths place. Then express the value as a single digit and a power of ten.

Accepted Answer

$$-8 imes10^{-5}$$

Answer

$$-8 imes10^4$$

Answer

$$8 imes10^{-5}$$

Answer

$$-7 imes10^5$$

Question 14

Try to change the number back to standard form: 6.79 x 10⁴

Accepted Answer

67,900

Answer

679,000

Answer

6,790

Answer

6,790,000

Question 15

A way of writing a number that shows the value of each of its digits using powers of 10.

Accepted Answer

expanded form (power of 10)

Answer

exact form (ten)

Answer

estimate form (10)

Answer

expression form (5 + 5 = 10)

Question 16

54.89 x 10² =

Accepted Answer

5,489

Answer

5.489

Answer

548.9

Answer

.5489

Power of Ten and Rounding

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