Numbers Worksheet-6

Numbers Worksheet-6

1. A rational number can always be written in what form?

(a) Decimal       (b) percent        (c) fraction        (d) square root

2. Which is a rational number?

(a)                 (b) 3.1415….      (c)                (d)

3. Which number is irrational?

(a) –6                 (b)                 (c)                    (d) 0.5

4. Pi  is ______.

(a) A rational number                 (b) Whole number

(c) An irrational number            (d) Natural number

5. Which of these is an irrational number?

(a)                  (b) 2.16              (c)               (d) 0.34571302...

6. Which of the following numbers is irrational?

(a)               (b)              (c) 4.05              (d)

7. Which statement is NOT correct?

(a) A rational can be written as a ratio.

(b) An irrational number can be written as a decimal.

(c) An irrational can be written as a fraction.

(d) An irrational number has endless non-repeating digits to the right of the decimal point.

8. Which of these is a rational number?

(a)                                             (b) 0.13133133313

(c) 0.33333...                                (d) 2.71828182845904...

9. _____ can be ordered on a number line.

(a) Rational numbers

(b) Irrational

(c) Both, rational and irrational numbers

(d) None of the above

10. Which is a rational number?

(a)                                         (b) 2.123456...

(c) cube root of 48                       (d) square root of 27

11. The set of negative number and whole numbers is called as

(a) Natural Numbers                  (b) Integers

(c) Positive Numbers                  (d) 0

12. The greatest negative integer

(a) –100                                         (b) Does not exist

(c) –1                                              (d) –9

13. The number which is neither positive nor negative is

(a) 1                     (b) 5                    (c) 0                    (d) 10

14. Absolute value of –58 is

(a) +58               (b) –58               (c) 58                  (d) 0

15. Absolute value of +16 is

(a) –16               (b) 0                    (c) +16                (d) 16

16. The smallest positive integer is

(a) 0                    (b) 100               (c) 1                     (d) 9

17. On a horizontal number line negative numbers are located on the ______ side of 0.

(a) Right            (b) Left               (c) Above           (d) Below

18. Opposite of rise in temperature by 5⁰C

(a) +5⁰C                                         (b) 15⁰C

(c) fall in temperature by 5⁰C   (d) +10⁰C

19. Opposite of earning Rs. 100

(a) +Rs.100                                   (b) Profit of Rs. 100

(c) Spending Rs. 100                   (d) None

20. Integer used to represent walking 3 km towards the north is

(a) Walking 3 km toward the south

(b) –3 km

(c) +3 km

(d) +3

Answer Key:

(1)-(c); (2)-(d); (3)-(b); (4)-(c); (5)-(d); (6)-(a); (7)-(c); (8)-(c); (9)-(a); (10)-(a); (11)-(b); (12)-(c); (13)-(c); (14)-(c); (15)-(d); (16)-(c); (17)-(b); (18)-(c); (19)-(c); (20)-(c)