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Practice - Unit 3

Total questions: 27

Worksheet time: 54mins

Name
Class
Date
1.
√196 = ______
a)
14
b)
142
c)
15
d)
152
2.

∛-1331

a)

21

b)

-7

c)

11

d)

-11

3.

You have a square blanket that has an area of 1600 square inches. What is the length of one side of the blanket?

a)

40 inches

b)

4 inches

c)

400 inches

d)

800 inches

4.

Which of the following is correct scientific notation?

a)

41.5 x 10-5

b)

0.2035 x 104

c)

20.4 x 108

d)

4.5 x109

5.

Write 208,000 in scientific notation.

a)

2.08 x 105

b)

0.0208 x 10-5

c)

20.8 x 105

d)

0.208 x 106

6.

Convert this number into scientific notation: 0.068

a)

6.9 x 106

b)

6.8 x 10-9

c)

6.8 x 10-2

d)

None of the above

7.
Light travels at a rate of 186,000 miles per second.  Write this number in scientific notation.
a)
1.86 x 105
b)
1.86 x 104
c)
18.6 x 104
d)
186 x 103
8.

Give the sum of (8.7 x 105) + (7.32 x 107) in scientific notation

a)

16.02 x 107

b)

7.407 x 105

c)

7.407 x 107

d)

1.602 x 107

9.

Leona is so excited. Her grandma is ordering a cubic hot tub that has a volume of 216 ft3. Her grandma needs to know how long each side is to order trim. What is the length of each side?

a)

4 feet

b)

6 feet

c)

8 feet

d)

108 feet

10.

 92=189^2=18  True or false?

a)

True

b)

False

11.
√17 is between
a)
3 and 4
b)
4 and 5
c)
6 and 7
d)
16 and 25
12.

(3.4 x 105)(1.2 x 10-3)

a)

4.08 x 10-8

b)

4.8 x 102

c)

4.08 x 102

d)

4.08 x 10-15

13.
a)

3.6 x 102

b)

3.6 x 108

c)

4.6 x 108

d)

4.6 x 102

14.
A computer's hard disk drive holds 8 x 107 bytes of information.  If Jill buys an extra memory stick that holds 3 x 106 bytes of information, how much memory will the computer hold?
a)
11 x 1013
b)
11 x 107
c)
8.3 x 1013
d)
8.3 x 107
15.
Which of the following contains only rational numbers?
a)
2.5, .764567..., 1/2, √27
b)
π, √4, √16, 7.7
c)
6.7, 4.45, -3, 
d)
5, -4.5, √13, √-9
16.

Which point most closely corresponds to the √8 on the number line below? (Click the question to see the picture)

a)

P

b)

Q

c)

R

d)

S

17.
The √20 is between which two integers?
a)
2 & 3
b)
3 & 4
c)
4 & 5
d)
5 & 6
18.

Give the difference of (6.4 x 10-6) - (5.7 x 10-7)

a)

5.83 x 10-6

b)

7 x 10-7

c)

1.23 x 10-13

d)

1.3 x 10-6

19.
The mean distance from the sun to Earth is 9.29 x 107 miles. Jupiter's mean distance from the sun is 4.8388 x 108 miles. What is the difference between these two distances in miles? 
a)
4.3092 x 101
b)
3.9098 x 107
c)
3.9098 x 108
d)
5.7678 x 108
20.

Identify the rational numbers.

a)

64\sqrt{64}

b)

3π3\pi

c)

45\frac{4}{5}

d)

0.15151515...0.15151515...

e)

0

21.
A REPEATING decimal is what type of number?
a)
Rational 
b)
Irrational
22.

Which of the following number is rational?

a)

127\sqrt{127}

b)

π\pi

c)

2.52.5

d)

8.98763...8.98763...

23.

Which of the following numbers is irrational?

a)

50\sqrt{50}

b)

36\sqrt{36}

c)

169\sqrt{169}

d)

225\sqrt{225}

24.
a)
1/2
b)
1/10
c)
1/100
d)
1/9
25.
a)
7/50
b)
14/9
c)
7/45
d)
14/99
26.
a)
2/3
b)
-2/3
c)
3/5
d)
-3/5
27.

A rectangular section of land made up of wheat farms measures 5 x 104 meters and a width of 6 x 103 meters. What is the area of land in square meters? [Area = length x width]

What operation do you use?

a)

addition

b)

subtraction

c)

multiplication

d)

division

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