Question

I. Choose the correct answer : (10 X 1 = 10)

1) The additive inverse of 15 is_______

(a) 1 (b) -15 (c) 15

2) Which of the following is the multiplicative identity for an integer ‘a’ ?

(a) –a (b) 0 (c) 1

3) The operation ‘of ’ represents ______

(a) addition (b) subtraction (c) multiplication

4) 5 ×

2

5

is ______

(a) 2 (b) 50 (c) 10

5) The range for the data 35, 30, 38.5, 29, 37.5, 39.2, 36.3 is ______

(a) 1.3 (b) 9.2 (c) 10.2

6) The mean of first five natural numbers is ______

(a) 2 (b) 3 (c) 5

7) The median of 5, 7, 8, 9, 11, 13, 15 is ________

(a) 7 (b) 9 (c) 11

8) The solution of the equation 2x – 3 = 5 is _______

(a) 1 (b) 8 (c) 4

9) The number of trees in different parks of a city are 33, 38, 48, 33, 34, 34, 33 and 24.

The mode of this data is ______

(a) 24 (b) 34 (c) 33

10) If 2 is subtracted from thrice a number, the result is 7. The number is ________

(a) 6 (b)7 (c) 3
II. Fill in the blanks : ( 5 x 1 = 5)

11) (65 + 15 ) + 56 = _____ + (15 + 56)


12) The product of 3

7

2

3

_______


13) The median of 3, 1, 2, 6, 4, 5 and 0 is _______


14) If 7x + 4 = 25, then x is equal to _______


15) The solution of the equation 3p + 5 = 8 is ______​

Answer 1

Step-by-step explanation:

1) -15

2) 0

3) Multiplication

4) 50

5) 9.2

6) 3

7) 9

8) 4

9) 33

Answer 2

Step-by-step explanation:

1. (b)
2. (c)
3. (c)
4. (b)
5. (b)
6. (b)
7. (b)
8. (c)
9. (c)
10. (a)
11. 65
12. 126
13. 3
14. 7×3+4=25
15. 3(p)+5=3×1+5=8