Question

e
2 An elevator descends into a
above the ground level, ho
M
Points to Remember
• The product or quotient of two integers with like signs is positive.
The product or quotient of two integers with unlike signs is negative.
. When the number of negative integers is odd, their product is negative,
When the number of negative integers is even, their product is positive.
All properties of operations on whole numbers also hold for integers,
If a and bare integers.
axb=ab
b
ax(-6)=-ab a +(-b) =-
b
(-1) Oddpositiveinteger =-1
(-1) even positiveinteger = 1
1. In a quiz, positive marks
answers. If Anubha's scor
her total score at the end
a+b=0
a
(i) -12
EXERCISES 1 (C)
(-36) -3
1. Evaluate each of the following:
27+(-3)
(ü)
(iii) (-81)=(-9)
(iv) 45=(-5)
(v) (-45)=(-15)
(vi) 0-(-14)
(vii) 16 =(-4)
(viii) (-16) = (4)
(ix) 580 =(-1)
-620-1
(xi) 68925 =(-1)
(xii) (-7533) =(-81)
(xiii) 7872+(-123)
(xiv) 53892 =(-53892)
(xv) (-2407) =(-83)
2. Verify a :(b + c)+(a + b) + (a + c) for each of the following values of a, b and c.
(i) a =10, b =-6, C = 4
a=-12, b=3, c =1
3. Fill in the blanks :
(i) ...US..........+(-9)=5
(ii)
(iii) 50 = ......... =-50
(iv) -350
2. At a milk factory, there
temperature outside wa
temperature outside. TE
(i)-62°C
3. A certain freezing proc
of 5°C every hour. Wha
(i) -10°C
4. The temperature at nc
rate of 2 degrees per h
(i) 2 pm
(iii) 12 mid-night
5. On the number line
(i) -10
(ii) O
6. The value of 5 =(-1
(i) O and -10
(ii) -4 and -15
7. The next number
(i) 25
(iii) o
8.9.... +7=-12
............ =-350
000
16 Maths-7​

Answer 1

Answer:

etne sare questions hamse to ek v nahi hota bro or sis