All Exams >
Class 6 >
National Cyber Olympiad Class 6 >
All Questions
All questions of Mathematical Operations for Class 6 Exam
If '+' denotes '×', '×' denotes '+', '−' denotes '÷', and '÷' denotes '−', then 5+3×2−10÷5=?- a)5
- b)20
- c)15
- d)10
Correct answer is option 'D'. Can you explain this answer?
If '+' denotes '×', '×' denotes '+', '−' denotes '÷', and '÷' denotes '−', then 5+3×2−10÷5=?
a)
5
b)
20
c)
15
d)
10
|
Eduskill Classes answered |
5+3×2−10÷5
Using the given symbols,
5×3+2÷10−5
15+0.2−5=15.2−5=10.2≈10.
Using the given symbols,
5×3+2÷10−5
15+0.2−5=15.2−5=10.2≈10.
lf'+' denotes 'multiplication', ′×′denotes 'subtraction',′÷′, denotes 'addition', and ′−′, denotes 'division', then 175 − 25 ÷ 5 + 20 × 3 + 10 =?- a)160
- b)70
- c)77
- d)240
Correct answer is option 'C'. Can you explain this answer?
lf'+' denotes 'multiplication', ′×′denotes 'subtraction',′÷′, denotes 'addition', and ′−′, denotes 'division', then 175 − 25 ÷ 5 + 20 × 3 + 10 =?
a)
160
b)
70
c)
77
d)
240
|
Shivam Sen answered |
Understanding the Operations
In this problem, we need to decode the operations based on the symbols given:
- lf+ denotes multiplication
- ′×′ denotes subtraction
- ′÷′ denotes addition
- ′−′ denotes division
Rewriting the Expression
The original expression is:
175 − 25 ÷ 5 + 20 × 3 + 10
Now, replacing the symbols based on their meanings:
- 175 × 25 + 5 - 20 lf+ 3 + 10
This translates to:
175 - (25 + 5) + (20 × 3) + 10
Performing the Calculations
Now, let's solve the expression step by step:
1. Calculate 25 ÷ 5:
- 25 + 5 = 30
2. Calculate 20 × 3:
- 20 × 3 = 60
3. Substituting back into the expression:
- 175 - 30 + 60 + 10
4. Performing each operation in order:
- 175 - 30 = 145
- 145 + 60 = 205
- 205 + 10 = 215
Final Calculation
Now, let's check the final computation step by step:
- Start with 175
- Subtract 30 (result is 145)
- Add 60 (result is 205)
- Finally, add 10 (result is 215)
However, re-evaluating based on the new interpretation of operations, let's confirm the calculation:
1. 175 - (25 + 5) = 175 - 30 = 145
2. 145 + (20 × 3) = 145 + 60 = 205
3. 205 + 10 = 215
Conclusion
After carefully evaluating all the operations, the computed answer is indeed 215. However, if the correct answer is stated as option 'C' (77), there may be a need to double-check the initial symbols or the intended operations.
In this problem, we need to decode the operations based on the symbols given:
- lf+ denotes multiplication
- ′×′ denotes subtraction
- ′÷′ denotes addition
- ′−′ denotes division
Rewriting the Expression
The original expression is:
175 − 25 ÷ 5 + 20 × 3 + 10
Now, replacing the symbols based on their meanings:
- 175 × 25 + 5 - 20 lf+ 3 + 10
This translates to:
175 - (25 + 5) + (20 × 3) + 10
Performing the Calculations
Now, let's solve the expression step by step:
1. Calculate 25 ÷ 5:
- 25 + 5 = 30
2. Calculate 20 × 3:
- 20 × 3 = 60
3. Substituting back into the expression:
- 175 - 30 + 60 + 10
4. Performing each operation in order:
- 175 - 30 = 145
- 145 + 60 = 205
- 205 + 10 = 215
Final Calculation
Now, let's check the final computation step by step:
- Start with 175
- Subtract 30 (result is 145)
- Add 60 (result is 205)
- Finally, add 10 (result is 215)
However, re-evaluating based on the new interpretation of operations, let's confirm the calculation:
1. 175 - (25 + 5) = 175 - 30 = 145
2. 145 + (20 × 3) = 145 + 60 = 205
3. 205 + 10 = 215
Conclusion
After carefully evaluating all the operations, the computed answer is indeed 215. However, if the correct answer is stated as option 'C' (77), there may be a need to double-check the initial symbols or the intended operations.
In a certain code, m stands for ′÷′, n stands for ′−′,p stands for ′×′, b stands for'+', then the value of 16 p 4 b 28 m 7 n 8 is- a)68
- b)60
- c)62
- d)56
Correct answer is option 'B'. Can you explain this answer?
In a certain code, m stands for ′÷′, n stands for ′−′,p stands for ′×′, b stands for'+', then the value of 16 p 4 b 28 m 7 n 8 is
a)
68
b)
60
c)
62
d)
56
|
Kds Coaching answered |
Given the new symbol notations:
- m stands for '÷'
- n stands for '−'
- p stands for '×'
- b stands for '+'
We need to evaluate the expression 16 p 4 b 28 m 7 n 8 using the new notation.
Step 1: Replace the symbols as per the new notation.
- p becomes '×'
- b becomes '+'
- m becomes '÷'
- n becomes '−'
So, the expression 16 p 4 b 28 m 7 n 8 becomes: 16 × 4 + 28 ÷ 7 − 8
Step 2: Simplify the expression following the order of operations (BODMAS/BIDMAS).
- First, do the multiplication and division from left to right:
- 16 × 4 = 64
- 28 ÷ 7 = 4
So, the expression becomes: 64 + 4 − 8
- Now, perform the addition and subtraction from left to right:
- 64 + 4 = 68
- 68 − 8 = 60
Step 3: Final answer: The value of the expression is 60.
If + means ÷, × means +, - means ×, and ÷ means -, then what will be the value of 18 × 44 + 11 × 3 - 2?- a)23
- b)24
- c)27
- d)28
Correct answer is option 'D'. Can you explain this answer?
If + means ÷, × means +, - means ×, and ÷ means -, then what will be the value of 18 × 44 + 11 × 3 - 2?
a)
23
b)
24
c)
27
d)
28
|
|
Kds Coaching answered |
Given the new symbol notations:
- + means division (÷)
- × means addition (+)
- - means multiplication (×)
- ÷ means subtraction (−)
We need to evaluate the expression 18 × 44 + 11 × 3 - 2 using the new notation.
Step 1: Replace the symbols as per the new notation.
- × becomes '+'
- + becomes '÷'
- - becomes '×'
- ÷ becomes '−'
So, the expression 18 × 44 + 11 × 3 - 2 becomes: 18 + 44 ÷ 11 + 3 × 2
Step 2: Simplify the expression following the order of operations (BODMAS/BIDMAS).
- First, do the division and multiplication from left to right:
- 44 ÷ 11 = 4
- 3 × 2 = 6
So, the expression becomes: 18 + 4 + 6
- Now, perform the addition from left to right:
- 18 + 4 = 22
- 22 + 6 = 28
Final answer: The value of the expression is 28.
So, the correct option is D: 28.
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
Correct answer is option 'B'. Can you explain this answer?
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
|
|
Kds Coaching answered |
Given the new symbol notations:
- P means '÷'
- Q means '×'
- R means '−'
- S means '+'
We need to evaluate the expression 175 P 25 S 8 Q 2 R 20 using the new notation.
Step 1: Replace the symbols as per the new notation.
- P becomes '÷'
- Q becomes '×'
- R becomes '−'
- S becomes '+'
So, the expression 175 P 25 S 8 Q 2 R 20 becomes: 175 ÷ 25 + 8 × 2 − 20
Step 2: Simplify the expression following the order of operations (BODMAS/BIDMAS).
- First, perform division and multiplication from left to right:
- 175 ÷ 25 = 7
- 8 × 2 = 16
So, the expression becomes: 7 + 16 − 20
- Now, perform addition and subtraction from left to right:
- 7 + 16 = 23
- 23 − 20 = 3
Final answer: The value of the expression is 3.
So, the correct option is B: 3.
If A stands for'+? B stands for′−′, C stands for′×′and D stands for′÷′, then 5 C 5 D 5 A 5 B 5=?- a)0
- b)5
- c)10
- d)15
Correct answer is option 'B'. Can you explain this answer?
If A stands for'+? B stands for′−′, C stands for′×′and D stands for′÷′, then 5 C 5 D 5 A 5 B 5=?
a)
0
b)
5
c)
10
d)
15
|
|
Kds Coaching answered |
Given the new symbol notations:
- A stands for '+'
- B stands for '−'
- C stands for '×'
- D stands for '÷'
We need to evaluate the expression 5 C 5 D 5 A 5 B 5 using the new notation.
Step 1: Replace the symbols as per the new notation.
- C becomes '×'
- D becomes '÷'
- A becomes '+'
- B becomes '−'
So, the expression 5 C 5 D 5 A 5 B 5 becomes: 5 × 5 ÷ 5 + 5 − 5
Step 2: Simplify the expression following the order of operations (BODMAS/BIDMAS).
- First, do the multiplication and division from left to right:
- 5 × 5 = 25
- 25 ÷ 5 = 5
So, the expression becomes: 5 + 5 − 5
- Now, perform the addition and subtraction from left to right:
- 5 + 5 = 10
- 10 − 5 = 5
Final answer: The value of the expression is 5.
So, the correct option is B: 5.
If'+' is called 'subtraction?,′−′is called 'multiplication ′÷′, is called 'addition' and ′×′ is called 'division: then 9×3÷4−1+2=?- a)5
- b)3/2
- c)-1
- d)4
Correct answer is option 'A'. Can you explain this answer?
If'+' is called 'subtraction?,′−′is called 'multiplication ′÷′, is called 'addition' and ′×′ is called 'division: then 9×3÷4−1+2=?
a)
5
b)
3/2
c)
-1
d)
4
|
|
Kds Coaching answered |
Given the new symbol notations:
- '+' is called 'subtraction' (−)
- '−' is called 'multiplication' (×)
- '÷' is called 'addition' (+)
- '×' is called 'division' (÷)
We need to evaluate the expression 9 × 3 ÷ 4 − 1 + 2 using the new notation.
Step 1: Replace the symbols as per the new notation.
- '×' becomes 'division' (÷)
- '÷' becomes 'addition' (+)
- '−' becomes 'multiplication' (×)
- '+' becomes 'subtraction' (−)
So, the expression 9 × 3 ÷ 4 − 1 + 2 becomes: 9 ÷ 3 + 4 × 1 − 2
Step 2: Simplify the expression following the order of operations (BODMAS/BIDMAS).
- First, do the division and multiplication from left to right:
- 9 ÷ 3 = 3
- 4 × 1 = 4
So, the expression becomes: 3 + 4 − 2
- Now, perform the addition and subtraction from left to right:
- 3 + 4 = 7
- 7 − 2 = 5
Final answer: The value of the expression is 5.
So, the correct option is A: 5.
If 'p' denotes ′÷′, 'q' denotes'+', 'r' denotes′−′ and 't' denotes ′×′ then 11 q 15 r 8 p 4 t 5=?- a)36
- b)20
- c)26
- d)16
Correct answer is option 'D'. Can you explain this answer?
If 'p' denotes ′÷′, 'q' denotes'+', 'r' denotes′−′ and 't' denotes ′×′ then 11 q 15 r 8 p 4 t 5=?
a)
36
b)
20
c)
26
d)
16
|
|
Kds Coaching answered |
Given the new symbol notations:
- p denotes '÷'
- q denotes '+'
- r denotes '−'
- t denotes '×'
We need to evaluate the expression 11 q 15 r 8 p 4 t 5 using the new notation.
Step 1: Replace the symbols as per the new notation.
- q becomes '+'
- r becomes '−'
- p becomes '÷'
- t becomes '×'
So, the expression 11 q 15 r 8 p 4 t 5 becomes: 11 + 15 − 8 ÷ 4 × 5
Step 2: Simplify the expression following the order of operations (BODMAS/BIDMAS).
- First, do the division and multiplication from left to right:
- 8 ÷ 4 = 2
- 2 × 5 = 10
So, the expression becomes: 11 + 15 − 10
- Now, perform the addition and subtraction from left to right:
- 11 + 15 = 26
- 26 − 10 = 16
Final answer: The value of the expression is 16.
So, the correct option is D: 16.
If E means ×, F means ÷, G means -, and H means +, then what will be the value of 8 F 8 H 8 E 8 G 8?- a)53
- b)54
- c)55
- d)57
Correct answer is option 'D'. Can you explain this answer?
If E means ×, F means ÷, G means -, and H means +, then what will be the value of 8 F 8 H 8 E 8 G 8?
a)
53
b)
54
c)
55
d)
57
|
|
Kds Coaching answered |
Given the new symbol notations:
- E means '×'
- F means '÷'
- G means '−'
- H means '+'
We need to evaluate the expression 8 F 8 H 8 E 8 G 8 using the new notation.
Step 1: Replace the symbols as per the new notation.
- F becomes '÷'
- H becomes '+'
- E becomes '×'
- G becomes '−'
So, the expression 8 F 8 H 8 E 8 G 8 becomes: 8 ÷ 8 + 8 × 8 − 8
Step 2: Simplify the expression following the order of operations (BODMAS/BIDMAS).
- First, perform division and multiplication from left to right:
- 8 ÷ 8 = 1
- 8 × 8 = 64
So, the expression becomes: 1 + 64 − 8
- Now, perform addition and subtraction from left to right:
- 1 + 64 = 65
- 65 − 8 = 57
Final answer: The value of the expression is 57.
So, the correct option is D: 57.
Chapter doubts & questions for Mathematical Operations - National Cyber Olympiad Class 6 2025 is part of Class 6 exam preparation. The chapters have been prepared according to the Class 6 exam syllabus. The Chapter doubts & questions, notes, tests & MCQs are made for Class 6 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests here.
Chapter doubts & questions of Mathematical Operations - National Cyber Olympiad Class 6 in English & Hindi are available as part of Class 6 exam.
Download more important topics, notes, lectures and mock test series for Class 6 Exam by signing up for free.
National Cyber Olympiad Class 6
12 videos|25 docs|53 tests
|
|
© EduRev
|
Education Revolution
|
|
Signup on EduRev and stay on top of your study goals
10M+ students crushing their study goals daily