# NCTB Class 6 Math Chapter Three Exercise 3.3 Solution

NCTB Class 6 Math Chapter Three Exercise 3.3 Solution by Math Expert. Bangladesh Board Class 6 Math Solution Chapter 3 “Integers” Exercise 3.3 Solution.

 Board NCTB Class 6 Subject Mathematics Chapter 3 Chapter Name “Integers” Exercise 3.3 Solution

### Exercise:- 3.3

(1) Which of the following is the additive inverse expression of –a?

Solution:-

(2) Which of the following is the sum of additive inverse number with 12?

Solution:-

The sum of additive inverse number—(b) -12

(3) —  -15 = -10; what is the number in —

Solution:-

5-15 = -10; The number is 5 (Answer)

(4) The sum of the additive inverse of the second number with the first number is—

Solution:-

(d) 15

(6) If A=45-(-11) and B=57+(-4),

(i) A=56 (ii) B=-53 (iii) A-B=3;

Solution:-

If A=54-(-11) ; B=57+(-4)

= 45+11        = 57-4

= 56                = 53

Therefore, A-B = 56-53 = 3

(8) What type of number is the one that represents the ground floor?

Solution:-

(b) Ground floor represents non negative.

(9) Going up 3 stairs from the ground floor and then to move down 5 stairs from there—

Solution:-

(10) Find the difference:

Solution:-

(a) 35-20

= 15

(b) 72-90

= -18

Solution:-

(c) (-15)- (-18)

= -15+18

= 3

Solution:-

(d) (-20) -13

= -20-13

= -33

Solution:-

(e) 23- (-12)

= 23+12

= 35

Solution:-

(f) (-32)- (-40)

= -32+40

= 8

(11) Fill in the blank with >,< or = sing.

(12) Fill in the blanks:

Solution:-

(a) (-8)+(+8) = 0

(b) 13+(-3) = 10

(c) 12+(-12) = 0

(d) (-4) +-8 = -12

(13) Find in value of :

Solution:-

(13) (a) (-7)-8-(-25)

= -7-8+25

= -15+25

Solution:-

(13)(b) (-13)+ 32-8-1

= -13+32-8-1

= 19-8-1

Solution:-

(13)(c) (-7)+ (-8)+(-90)

= -7-8-90

Solution:-

(13)(d) 50- (-40)- (-2)

= 50+40+2

(14)

Solution:-

(a) -3<6

9>-3

(-3+6) = (9-6)

Solution:-

(14)(b) -(-3)+ (-6)+9

= +3-6+9