Mathematical Operations - Base Level
Practice and master this topic with our carefully crafted questions.
If '+' means '÷', 'x' means '-', '÷' means '+' and '-' means 'x', then 16 ÷ 8 x6 - 2 + 12 = ?
16 ÷ 8 x 6 - 2 + 12
Replacing the signs, 16 + 8 - 6 x 2 ÷ 12
= 16 + 8 - (6 x 2)/12 = 16 + 8 -1 = 24 - 1 = 23
If + means 'subtraction', x means 'division', '÷' means 'addition' and '-' means 'multiplication', then 15 x 5 + 78 - 5 ÷ 4 = ?
15 x 5 + 78 - 5 ÷ 4
Now, changing the signs as per the questions,
15/5 - 78 x 5 + 4 = 3 - 390 + 4 = - 390 + 7 = -383
If '+' means 'x', '-' means '÷', 'x' means '-' and '÷' means '+', then find the value of the given equation 6 + 64 - 8 ÷ 45 x 8 = ?
Given equation, 6 + 64 - 8 ÷ 45 x 8
Now, changing the sign as per the question,
6 x 64 ÷ 8 + 45 - 8 = (6 x 64)/8 + 45 - 8
6 x 8 + 45 - 8 = 48 + 45 - 8 = 93 - 8 = 85
If 'x' means subtraction; '-' means division, '◻' means addition and '%' means multiplication, then find the value of 13 ◻ 3 x 6 % 8 - 4 ◻ 14 = ?
Given, ? = 13 ◻ 3 x 6 % 8 - 4 ◻ 14
Now, changing the symbols into the sign as per question,
? = 13 + 3 - 6 x 8 ÷ 4 + 14
? = 13 + 3 -6 x 8/4 + 14
? = 13 + 3 - 12 + 14
? = 30 - 12
? = 18
If the mathematical signs interchange from - to +, + to ÷, x to - and ÷ to x, then find out the correct answer of the given equation 6 ÷ 8 + 2 x 5 - 8 = ?
6 ÷ 8 + 2 x 5 - 8 = 6 x 8 ÷ 2 - 5 + 8
= 6 x 4 - 5 + 8
= 24 - 5 + 8
= 32 - 5 = 27
If P denotes '÷', Q denotes 'X', R denotes '+' and S denotes '-', then
18 Q 12 P 4 R 5 S 6 = ?
Given, 18 Q 12 P 4 R 5 S 6
After changing the letters into signs as per given in the question, we have
18 x 12 ÷ 4 + 5 - 6
= 18 x 12/4 + 5 - 6 [by VBODMAS rule]
= 18 x 3 + 5 -6 = 54 + 5 - 6
= 59 - 6 = 53
In a certain code language, '÷' represents '+', '-' represents 'x', '+' represents '÷' and 'x' represents '-'. Find out the answer to the given question 8 - 14 + 7 x 10 ÷ 9 = ?
Given, 8 - 14 + 7 x 10 ÷ 9
Now, changing, the signs as per the questions,
8 x 14 ÷ 7 - 10 + 9
= 8 x 2 - 10 + 9 = 16 - 10 + 9
= 25 - 10 = 15
In a certain code language, 'x' represents '+', '÷' represents 'x', '-' represents '÷' and '+' represents '-'. Find out the answer to the given question 25 ÷ 2 - 10 + 10 x 6 = ?
Given, 25 ÷ 2 - 10 + 10 x 6
Replacing the signs,
25 x 2 ÷ 10 - 10 + 6
= 25/5 - 10 + 6
= 5 - 10 + 6 = 11 - 10 = 1
If 'a' represents ÷, 'b' represents +, 'c' represents -, and 'd' represents x, then
24 a 6 d 4 b 9 c 8 = ?
Given, ? = 24 a 6 d 4 b 9 c 8
? = 24 ÷ 6 x 4 + 9 - 8
? = 24/6 x 4 + 9 - 8
? = 4 x 4 + 9 - 8
? = 16 + 9 - 8
? = 25 - 8 ? = 17
If '>' stands for 'division', 'v' stands for 'multiplication', '-' stands for 'greater than', 'x' stands for 'less than', '<' stands for 'addition', '^' stands for 'subtraction', '+' stands for 'equal to', then which of the following equations is correct?
After changing the signs of equation given in option (A) as per the question, we get
10 - 3 + 5 + 4 = 16
19 - 3 = 16 16 = 16