Question

I.Fill in the blanks:

1.75-25=____.

2.0+(-95)=____.

3.-80×____=-80.

4.25÷_____=-5.

5.___×75=0.

6.Area of a parallelogram is ____.

7.Area of a rhombus =base×____.

8.Perimeter of a square =____.

9.The integer ______ is the multiplicative identity for integers.

10.The product of zero by zero is ____.

II.Write True or False:

1.(-125)+25=-100.

2.15-(-18) is the same as 15+18.

3.15×5=75.

4.(-30)÷(-6)=5

5.The integer 0 is the additive identity for integers.

6.Area of trapezium is 1/2h×(a+b)square.units.

7.The sum of the two positive integers is positive.

8.The product of two negative integers is a positive integer.

9.Area of a square = a×asquare.units.

10.Perimeter is the distance around.

III.Choose the correct answers:

1.(-10)+(+7)=____.
a)+3 b)-3 c)-17 d)+17

2.20+(-9)+9=____.
a)20 b)29 c)11 d)38

3.(-100)-0+100=____.
a)200 b)0 c)100 d)-200

4.11×(-1)=_____.
a)-1 b)0 c)+1 d)-11

5.(-200)÷10 is
a)20 b)-20 c)210

6.The area of a parallelogram whose base 10m and height 7m is
a)70sq.m b)35sq.m
c)7sq.m d)10sq.m

7.The height of the rhombus whose area 96sq.m and side 24m is
a)8m b)10m c)2m d)4m

8.When the non parallel sides of a trapezium are equal then it is known as
a)a square b)a triangle
c)an isosceles trapezium

9.20+(-11)=___+20.
a)-11 b)11 c)20 d)0

10.The integer without sign represents ______integer.
a)positive b) negative

IV.Anwer the following:

1.Add (-70) and (-12).

2.Find the value of (-11)-(-33).

3.Find the height 'h' of the parallelogram whose area and base are 368sq.cm and 23cm respectively.

4.Find the area of the trapezium whose height 14cm and the parallel sides are 18cm and 9cm of length.

5.Prove that [(-2)×3]×(-4)=(-2)×[3×(-4)].

V.Answer in detail:

1.A fruit seller sold 5kg of mangoes at a profit of ₹15 per kg and 3kg of apples at a loss of ₹30 per kg.Find whether it is a profit or loss.

2.Find the area of the rhombus whose side is 17cm and height is 8cm.


please answer any two romeleter
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Answer 1

Fill in the blanks.

1. -23.25

2. -93

3. 1

4. -5

5. 0

6. area of parallelogram = base×height

7. area of rhombus = base×height

8. Perimeter = 4×side

9. -1

10. 0

True or False

1. True

2. True

3. true

4. true

5. true

6. true

7. true

8. true

9. true

10. true

Choose the correct answers

1. b

2. a

3. b

4. d

5. b

6. a

7. d

8. c

9. a

10. a