Mathematical Operations Test

Result

Mathematical Operations Test - 4

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Weekly Quiz Competition

Question 1
1 / -0

If P means ÷, Q means ×, R means - and S means +, then what will be the result of 175 P 25 S 8 Q 2 R 20?

A
2

B
3

C
4

D
5

Solution

After writing proper notations, we get
175 ÷ 25 + 8 × 2 - 20
= 7 + 16 - 20
= 3
Question 2
1 / -0

Which of the following sets of signs would be needed for the given equation to be true?

7 ___ 7 ___ 7 ___ 7 ___ 7 = 43

A
+, -, ÷, ×

B
×, ÷, +, -

C
÷, +, ×, -

D
-, ×, ÷, +

Solution

The best way to solve this is by options.

From option (3), we get
7 ÷ 7 + 7 × 7 - 7
= 1 + 49 - 7
= 43

So, this is the answer.
Question 3
1 / -0

Which of the following sets of signs would be needed for the equation to be true?

5 ___ 5 ___ 5 ___ 5 ___ 5 = 21

A
+, –, ÷, ×

B
×, ÷, +, –

C
÷, +, ×, –

D
–, ×, ÷, +

Solution

After using the correct signs ÷, +, × and –, we get 5 ÷ 5 + 5 × 5 – 5
= 1 + 25 – 5
= 21
Question 4
1 / -0

Which of the following sets of signs is needed for the following equation to be true?

3 ___ 3 ___ 3 ___ 3 ___ 3 = 3

A
÷, +, -, ×

B
+, ×, ÷, -

C
÷, -, +, ×

D
×, -, +, ÷

Solution

On filling in the signs given in option (1):
3 ÷ 3 + 3 - 3 × 3
= 1 + 3 - 9
= -5 ≠ 3

On filling in the signs given in option (2):
3 + 3 × 3 ÷ 3 - 3 = 3
3 + 3 × 1 - 3 = 3
3 + 3 - 3 = 3
6 - 3 = 3
3 = 3
Question 5
1 / -0

Which of the following two signs should be interchanged in the equation to make the equation correct?

(6 - 3) + (4 × 2 + 13) ÷ (7 × 2) = 21

A
+ and -

B
× and ÷

C
÷ and +

D
× and -

Solution

After interchanging × and -, we get
(6 × 3) + (4 - 2 + 13) ÷ (7 - 2)
= 18 + 15 ÷ 5
= 18 + 3
= 21
Question 6
1 / -0

Which two signs should be interchanged in the equation to make it correct?

(12 ÷ 3) - (6 × 2) + (7 × 3) - 6 = 1

A
× and ÷

B
÷ and +

C
× and -

D
+ and -

Solution

After interchanging + and -, we get
12 ÷ 3 + (6 × 2) - (7 × 3) + 6
= 4 + 12 - 21 + 6
= 1
Question 7
1 / -0

Which of the following two signs should be interchanged in the equation to make the equation correct?

(4 × 4) + (21 – 7 + 3) ÷ (35 – 7) = 17

A
+ and –

B
– and ÷

C
× and ÷

D
+ and ×

Solution

After interchanging + and –, we get (4 x 4) – (21 + 7 – 3) ÷ (35 + 7) = 16 – 25 ÷ 42 ≠ 17
After interchanging – and ÷, we get (4 × 4) + (21 ÷ 7 + 3) – (35 ÷ 7) = 16 + 6 – 5 = 17
Question 8
1 / -0

Which two signs should be interchanged to make the equation correct?

6 + (9 – 3) ÷ (8 + 1) × (7 – 4) = 24

A
× and ÷

B
+ and ÷

C
÷ and –

D
× and –

Solution

After interchanging × and ÷,

We get
6 + (9 – 3) × (8 + 1) ÷ (7 – 4) = 6 + 6 x 9 ÷ 3 = 24

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Re-Attempt Weekly Quiz Competition

Mathematical Operations Test - 4

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Mathematical Operations Test - 4

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SHARING IS CARING

Question 1

2

3

4

5

Solution

Question 2

+, -, ÷, ×

×, ÷, +, -

÷, +, ×, -

-, ×, ÷, +

Solution

Question 3

+, –, ÷, ×

×, ÷, +, –

÷, +, ×, –

–, ×, ÷, +

Solution

Question 4

÷, +, -, ×

+, ×, ÷, -

÷, -, +, ×

×, -, +, ÷

Solution

Question 5

+ and -

× and ÷

÷ and +

× and -

Solution

Question 6

× and ÷

÷ and +

× and -

+ and -

Solution

Question 7

+ and –

– and ÷

× and ÷

+ and ×

Solution

Question 8

× and ÷

+ and ÷

÷ and –

× and –

Solution

User

Question Analysis

My Perfomance

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Rank

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