EXERCISE 1.2, Integer chapter, Class7, Frank EMU BOOK, ICSE

Exercise 1.2 Q1 )Fill in the blanks And write the name of the property used in each case a. -16+(-5)= -5 +____ b. -561 +____ = -561 c. (-3) + {(-4)+(-7)} = {(-3) + (-4)}+____ d. -18+(-4) =____ Q2) For a=-12, b=4, c=-25. Find wether i) a+b=b+a ii) a+(b+c) = (a+b)+c iii) b and c are closed under subtraction iv) a-b ≠ b-a Q3) Fill in the blanks And write the name of the property used in each case a) -60+40 b) -35+45 c) -20-35 d) -18+50 e) -20-36 f) 38-70