26-nov-2012-class8-rational numbers-91.pdf

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TOPIC TOTAL CORRECT SCORE LAST 5 EXAMS IMPROVEMENT

Rational Numbers 12 0 0.00% 0.00% 0%

Total 12 0 0.00%

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Math Class : 8

Name : Date :

Choose correct answer(s) from given choice

1) What is the relation of 11

6

to -11

6

described as

a. Additive Identity b. Multiplicative Inverse

c. Additive Inverse d. Reciprocal

c. Additive Inverse

2) What is the relation of -9

18

to 18

-9

described as

a. Multiplicative Inverse b. Multiplicative Identity

c. Additive Inverse d. Additive Identity

a. Multiplicative Inverse

3) If p

q

= m

n

, then which of the following is always true:

a. p x m =n x q b. p x q =m x n

c. p x n =m x qd. p

n

= m

q

c. p x n =m x q

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4) How many rational numbers are there between any two non equal rational numbers ?

a. 0 b. Infinite

c. 30000 d. 3520

b. Infinite

5) -3

0

is _________________

a. positive rational number b. neither positive nor negative rational number

c. either positive or negative rational number d. negative rational number

b. neither positive nor negative rational number

Correct the Order

6) Arrange the following rational numbers in descending order

1)

a) 4

23

b) 8

23

c) 2

23

d) 6

23

b) 8

23

d) 6

23

a) 4

23

c) 2

23

2)

a) 10

21

b) 4

21

c) 7

21

d) 13

21

d) 13

21

a) 10

21

c) 7

21

b) 4

21

Fill in the blanks

7) Is 3

14

the multiplicative inverse of -42

3? Yes or No


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Is 3

14

the multiplicative inverse of -42

3? Yes or No No

8) Find the following and simplify it to lowest term:

A) 9

18

X -8

4

X -5

25

X 1

14

=

9

18

X -8

4

X -5

25

X 1

14

=1

70

B) -3

16

X 4

23

X -5

3

X 2

8

=

-3

16

X 4

23

X -5

3

X 2

8

=5

368

9) The difference between the greatest and the least numbers of -6

13

, -3

3

, 7

19

, -2

21

is .

The difference between the greatest and the least numbers of -6

13

, -3

3

, 7

19

, -2

21

is26

19

.

10) The average of the middle two rational numbers if 4

21

, -5

9

, 4

2

, -3

10

are arranged in ascending order is


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.

The average of the middle two rational numbers if 4

21

, -5

9

, 4

2

, -3

10

are arranged in ascending

order is-23

420

.


11/26/2012

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26-nov-2012-class8-rational numbers-91.pdf