Algebraic Expressions Test

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Algebraic Expressions Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

Get the algebraic expressions for subtraction of z from y.

A
y−z

B
y × z

C
y/z

D
y + z

Solution

Explanation:

subtract ( take away) z from y which is y−z
Question 2
1 / -0

Multiply 2a and 3a.

A
6a²

B
6a

C
5a²

D
12a²

Solution

Explanation:

product of the numerical coefficents of a 2×3=6

a × a is the power multiplication which equals a²

therefore it is 6a²
Question 3
1 / -0

The coefficient of y³in the expression y − y3 + y2 is

A
None of these

B
2

C
-1

D
1

Solution

Explanation:

Coefficient is the variable or the constant getting multiplied to the given variable.

Therefore -y³means y3×(−1)

so , answer is -1
Question 4
1 / -0

The constant term in the expression 1 + x²+ x is

A
x

B
1 and x

C
x²

D
1

Solution

Explanation:

Contant is a term which does not vary, so 1 is a constant term in the expression. x can take any integer and it varies for each and every intances.
Question 5
1 / -0

What is the statement for the expression 3mn + 5

A
None of these

B
number 5 added to one third the product of m and n

C
number 5 added to the product of m and n

D
number 5 added to 3 times the product of m and n

Solution

Explanation:

3mn means 3 times the product of m & n

The required expresiion : 3mn+5
Question 6
1 / -0

The sum of mn + (5 – 2) and mn+3 is

A
mn – 6

B
2mn – 6

C
2mn + 6

D
mn + 6

Solution

Explanation:

mn + mn = 2 mn

(5-2) = 3

3+3 = 6

there for 2mn + 6
Question 7
1 / -0

Write an expression : Raju's father's age is 5 years more than 3 times Raju's age . If Raju's age is x years , then father’s age is _______.

A
3x – 5

B
5 – 3x

C
3x + 7

D
3x + 5

Solution

Explanation:

Given Raju's Age = x

3 times Raju's age = 3 x

5 more than Raju's age = 5 + 3x or 3x + 5
Question 8
1 / -0

Identify the coefficient of x in expression 8 – x + y

A
-1

B
8

C
1

D
None of these

Solution

Explanation:

Coefficient is the factor of any of the product of literal and number.

Here − x = (−1) × (x) i.e. (x) is multiplied by (- 1)

Therefore the answer is -1
Question 9
1 / -0

Write down the expression for the sum of numbers a and b which is subtracted from their product :

A
ab −(a + b)

B
ab – a + b

C
a + b – ab

D
ab – a – b

Solution

Explanation:

Let 2 nos be a and b

Sum is (a+b) and the product is ab

sum is subtracted from the product is ab−(a+b)

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Algebraic Expressions Test - 1

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Algebraic Expressions Test - 1

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SHARING IS CARING

Question 1

y−z

y × z

y/z

y + z

Solution

Question 2

6a2

6a

5a2

12a2

Solution

Question 3

None of these

2

-1

1

Solution

Question 4

x

1 and x

x2

1

Solution

Question 5

None of these

number 5 added to one third the product of m and n

number 5 added to the product of m and n

number 5 added to 3 times the product of m and n

Solution

Question 6

mn – 6

2mn – 6

2mn + 6

mn + 6

Solution

Question 7

3x – 5

5 – 3x

3x + 7

3x + 5

Solution

Question 8

-1

8

1

None of these

Solution

Question 9

ab −(a + b)

ab – a + b

a + b – ab

ab – a – b

Solution

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6a²

5a²

12a²

x²