



Directions: Kindly solve the following questions and choose an option as your answer for each.


1.

If + stands for division; × stands for addition; – stands for multiplication; ÷ stands for subtraction, which of the following is correct?
1. 15 ÷ 5 × 2 – 6 + 3 = 28
2. 15 × 5 + 2 – 6 ÷ 3 = 56.5
3. 15 + 5 – 2 ÷ 6 × 3 = 3
4. 15 – 5 + 2 × 6 ÷ 3 = 41

Answer: Option
A
Explanation:
From the third equation, we get
15 + 5 – 2 ÷ 6 × 3 = 3
After interchanging the symbol
⇒ 15 ÷ 5 × 2 – 6 + 3 = 3
⇒ 3 × 2 – 6 + 3 = 3
⇒ 6 – 6 + 3 = 3
⇒ 3 = 3


2.

Which of the following interchange of sign would make the given equation correct?
64 – 8 × 9 ÷ 8 = 64

A.

+ and –

B.

÷ and ×

C.

+ and ÷

D.

– and ÷

Answer: Option
D
Explanation:
From the option fourth, we get
64 – 8 × 9 ÷ 8 = 64
Putting (– & ÷) in the equation,
⇒ 64 ÷ 8 × 9 – 8 = 64
⇒ 8 × 9 – 8 = 64
⇒ 72 – 8 = 64
⇒ 64 = 64


3.

Which interchange of signs will make the following equation correct?
(8 – 8) + 8 × 32 = 64

A.

×, +, –

B.

–, ÷, +

C.

+, ÷, +

D.

+, ÷,×

Answer: Option
D
Explanation:
From the fourth option, we get:
(8 – 8) + 8 × 32 = 64
⇒ (8 + 8) ÷ 8 × 32 = 64
⇒ 16 ÷ 8 × 32 = 64
⇒ 2 × 32 = 64


4.

Select the correct combination of mathematical signs to replace * signs and to balance the given equation:
18 * 6 * 3 * 12 * 24

A.

÷ – = ×

B.

× ÷ – =

C.

+ ÷ × =

D.

× = ÷ +

Answer: Option
B
Explanation:
From the second option, we get:
18 × 6 ÷ 3 – 12 = 24
⇒ 18 × 2 – 12 = 24
⇒ 36 – 12 = 24


5.

If ‘×’ means ‘addition’, ‘–’ means ‘division’, ‘÷’ means subtraction and ‘+’ means ‘multiplication’, then which of the following equations is correct?

A.

16 + 5 – 10 × 4 ÷ 3 = 9

B.

16 – 5 × 10 ÷ 4 + 3 = 12

C.

16 + 5 ÷ 10 × 4 – 3 = 9

D.

16 × 5 ÷ 10 ÷ 4 – 3 = 19

Answer: Option
A
Explanation:
From the first option, we get:
16 + 5 – 10 × 4 ÷ 3 = 9
⇒ 16 × 5 ÷ 10 + 4 – 3 = 9
⇒ 8 + 4 – 3 = 9
⇒ 12 – 3 = 9.






