Free Printable Grade-8 Unit-1 ASM

1.

In Rational Numbers both Numerator and Denominator are ____________

a)

Integers

b)

Whole Numbers

c)

Natural Numbers

d)

Composite Numbers

2.

Which rational numbers are equal to their reciprocal?

a)

0,1

b)

-1,0

c)

-1,1

d)

-1,0

3.

$\left(-\frac{9}{16}\times\frac{8}{15}\right)\ =\ ?$

a)

$-\frac{3}{10}$

b)

$-\frac{4}{15}$

c)

$-\frac{9}{25}$

d)

$-\frac{2}{5}$

4.

Between any two rational numbers we can find

a)

one and only one rational number

b)

only two rational numbers

c)

only ten rational numbers

d)

infinitely many rational numbers

5.

A number of the form $\frac{p}{q}$ is said to be a rational number if

a)

p and q are whole numbers and $q\ne0$

b)

p is a natural number and q is a whole number

c)

p and q are integers and $q\ne0$

d)

p and q are integers and $p\ne0\ \ \ q\ne0$

6.

The additive inverse of $-\frac{5}{12}$ is

a)

$\frac{5}{12}$

b)

$\frac{12}{5}$

c)

$-\frac{12}{5}$

d)

$\frac{2}{15}$

7.

The multiplicative inverse of $-\frac{1}{12}$ is

a)

12

b)

-12

c)

$\frac{12}{5}$

d)

none of the above

8.

The product of the additive inverse and the multiplicative inverse of $\frac{1}{4}$ is

(a)

9.

By what rational number should $\frac{5}{24}$ be multiplied to get 10

(a)

10.

A rational number between $\frac{1}{5}$ and $\frac{1}{2}$ is

a)

$\frac{1}{10}$

b)

$\frac{1}{20}$

c)

$\frac{7}{20}$

d)

$\frac{7}{10}$

11.

$\frac{5}{0}$ is a rational number. write true or false

(a)

12.

0.8 is a rational number

a)

True

b)

False

13.

Does this graphic organizer correctly group the numbers?

a)

Yes

b)

No

14.

-(-x) is same as

a)

-x

b)

x

c)

1/x

d)

-1/x

15.

Addition is associative for

a)

Natural numbers

b)

Whole numbers

c)

Rational numbers

d)

All of these

16.

If y be the reciprocal of rational number x, then the reciprocal of y will be

a)

x

b)

y

c)

x/y

d)

y/x

17.

Reciprocal of 0 is

a)

1

b)

-1

c)

0

d)

Not defined

18.

1 (one) is

a)

the identity for addition of the rational number

b)

the identity for subtraction of the rational number

c)

the identity for multiplication of the rational number

d)

the identity for division of the rational number

19.

Rational numbers are commutative for

a)

Subtraction

b)

Division

c)

Addition and Subtraction

d)

Addition and Multiplication

20.

What is a possible integer that could be between -6 and 2 on a number line?

by Maths Online Bathinda

a)

4

b)

-8

c)

3

d)

-3

21.

Label Point C

a)

5/6

b)

-2/6

c)

-2/3

d)

-1/2

22.

a + b = b + a, this is _______________ property

a)

Closure

b)

Distributive

c)

Associative

d)

Commutative

23.

a + (b + c) = (a + b) + c is ______________ property

a)

Distributive

b)

Associative

c)

Closure

d)

Commutative

24.

a x (b + c) = a x b + a x c, is ___________________ property

a)

Distributive

b)

Closure

c)

Commutative

d)

Associative

25.

What number should be added to $\frac{-5}{8}\$ so as to get $\frac{5}{9}$

a)

$\frac{85}{72}$

b)

$\frac{1}{72}$

c)

$\frac{5}{72}$

d)

$\frac{7}{72}$

26.

subtract

\frac{3}{4}

from

\frac{5}{6}

a)

$\frac{2}{13}$

b)

$\frac{1}{13}$

c)

$\frac{1}{12}$

d)

$\frac{1}{5}$

27.

Simplify by distributing:
-⅔(-6x - 9)

a)

12x+18

b)

2x+3

c)

4x+6

d)

6x+9

28.

Which of the following number is divisible by 2?

a)

6483

b)

2967

c)

7890

d)

1235

29.

A number which is divisible by 9 is also divisible by_____

a)

3

b)

6

c)

11

d)

None of these

30.

The usual form of the number 5 x 100 + 6 x 1 is _____

a)

506

b)

5006

c)

56

d)

11

31.

If 486*7 is divisible by 9, then the least value of * is ____

a)

0

b)

1

c)

2

d)

3

32.

If the division of N ÷ 5 leaves a remainder 4. What might be the one's digit?

a)

4

b)

9

c)

4 or 9

d)

3

33.

Generalised form of a gour digit number abdc is

a)

1000 a + 100 b + 10 c + d

b)

1000 a + 100 c + 10 b + d

c)

1000 a + 100 b + 10 d + c

34.

If "A3 + 8B = 150", then the value of A + B is

a)

13

b)

12

c)

17

35.

If "5A x A = 399", then the value of A is

a)

3

b)

6

c)

7

36.

"1A35" is divisible by 3 if A = _________

a)

4

b)

3

c)

2

37.

The number with unit place 0 is divisible by 10.

a)

true

b)

false

38.

If a number passes the test for 2 and 3 it is divisble by 6.

a)

True

b)

False

39.

Name the factors of 27.

a)

1, 3, 9, 27

b)

3, 9

c)

1, 27

d)

1, 2, 3, 27

40.

I have a number. This number is divisible by 11. If you get the sum of its digits, the result

is 6. What is my number?

a)

229

b)

230

c)

231

d)

233

Grade-8 Unit-1 ASM

Total questions: 40

Worksheet time: 20mins

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