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WorksheetsAlgebraic Expressions,Direct & Inverse Proportion Class 8
Total questions: 16
Worksheet time: 12mins
If x,y and z are variables, then x+y+z is a
Monomial
Binomial
Trinomial
Quadratic
Product of - (x2+3x+5) and (x2−1)
x4+3x3−4x2−3x−5
x4+3x3+4x2−3x−5
4x2+3x+2x2−5
x4+3x3−4x2−3x +5
Identity for (a2−b2) (More than 1 correct answer)
(a+b)(a-b)
(a-b)(a-b)
(a-b)(a+b)
(a+b)(a+b)
An algebraic expression that has only one term (Type answer in all small letters)
(a)
A symbol which takes various numerical values is called a constant
True
False
Which of the following is in Direct Proportion ?
One side of a cuboid and its volume
Number of pipes to fill a tank and the time to fill the same tank
Change in weight and height amongst individuals
Speed of a vehicle and the distance travelled in a fix time interval
15 books weigh 6 kg. What will 6 books weigh ?
2.4 kg
3 kg
1 kg
4.2 kg
Question 21.If 8 men can do a piece of work in 20 days, in how many days could 20 men do the same work ?
6 days
8 days
4 days
3 days
The constant of variation, if x ∝ y, from the following table is
1
2
3
4
If x = 20 and y = 40, then x and y are:
Directly Proportional
Inversely proportional
Cannot be determined
If x and y are directly proportional, then which of the following is correct?
x + y = constant
x – y = constant
xy = constant
x/y = constant
If x ∝ y and x1= 5, y1 = 210 and x2 = 2, then find y2 ?
200
84
99
70
The coefficient in the term -5x is
-5
5
1
0
If we subtract 4a – 7ab + 3b + 12 from 12a – 9ab + 5b – 3, then the answer is
8a + 2ab + 2b + 15
8a + 2ab + 2b – 15
8a – 2ab + 2b – 15
8a – 2ab – 2b – 15
The result of subtraction of 3x from -4x is
-7x
7x
-x
x
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