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CBSE Class 5  >  Class 5 Test  >  Math Olympiad  >  Olympiad Test: Computation Operations - 3 - Class 5 MCQ

Olympiad Test: Computation Operations - 3 - Free MCQ with solutions


MCQ Practice Test & Solutions: Olympiad Test: Computation Operations - 3 (20 Questions)

You can prepare effectively for Class 5 Math Olympiad for Class 5 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Olympiad Test: Computation Operations - 3". These 20 questions have been designed by the experts with the latest curriculum of Class 5 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 40 minutes
  • - Number of Questions: 20

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Olympiad Test: Computation Operations - 3 - Question 1
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What is the value of 30 – (5 × 23 – 15)?

Detailed Solution: Question 1

As per the BODMAS rule:
30 – (5×23 – 15)
=30 – (5×8 – 15)
=30 – (40 – 15)
=30 – 25
=5

Olympiad Test: Computation Operations - 3 - Question 2
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What is the value of (3 + 2)2 – 5 × 3 + 23?

Detailed Solution: Question 2

As per the BODMAS rule:
Start with: (3 + 2)2 – 5 × 3 + 23
Do the Bracket first: (3 + 2) = 5
⇒ 52 – 5 × 3 + 23
Next we do the orders:
52 = 25 and  23 = 8
⇒ 25 – 5 × 3 + 8
Next we do the Multiplication:
⇒ 25 – 15 + 8
finally we do the Addition and Subtraction, in left-to-right order:
⇒ 10 + 8 
= 18

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Olympiad Test: Computation Operations - 3 - Question 3
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What is the value of (15 ÷ 3 + 4) – (32 –7× 2)?

Detailed Solution: Question 3

Using BODMAS rule
First Bracket:
15 ÷ 3 + 4
Do Division first:
15 ÷ 3 + 4 = 5 + 4
Then do Addition:
5 + 4 = 9
Second Bracket:
32 – 7 × 2
Do Orders first : [Remember that 32 means 3 × 3 = 9, not 3 × 2 = 6] Next do Multiplication:
32 – 7 × 2 = 9 – 7 × 2
9 – 7 × 2 = 9 – 14
Next Subtraction:
9 – 14 = – 5
Now complete the final Subtraction:
(15 ÷ 3 + 4) – (32 – 7 × 2) = 9 – (–5)
Lastly, subtracting a negative becomes a simple addition:
9 – (– 5) = 9 + 5 = 14

Olympiad Test: Computation Operations - 3 - Question 4
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What is the value of (42 – 6 + 5) / (32 + 8 – 7 × 2)?

Detailed Solution: Question 4

There are two sets of Brackets, so do one at a time.
First Bracket:
42 – 6 + 5
Do Order first:
42 – 6 + 5 = 16 – 6 + 5
Then do Subtraction and finally Addition:
16 – 6 + 5 = 10 + 5 = 15
Second Bracket:
32 + 8 – 7 × 2
Do Orders first:
32 + 8 – 7 × 2 = 9 + 8 – 7 × 2
Next do Multiplication:
9 + 8 – 7 × 2 = 9 + 8 – 14
Next do Addition and finally Subtraction:
9 + 8 – 14 = 17 – 14 = 3
Now complete the final Division:
(42 – 6 + 5) / (32 + 8 – 7 × 2) = 15 / 3 = 5

Olympiad Test: Computation Operations - 3 - Question 5
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What is the value of (33 – 2 × 7) + (5 × 3 – 22)?

Detailed Solution: Question 5

There are two sets of Brackets, so do one at a time.
First Bracket:
33 – 2 × 7 Do Order (the exponent “3”) first:
33 – 2 × 7 = 27 – 2 × 7
Then do Multiplication:
27 – 2 × 7 = 27 – 14
and finally Subtraction:
27 – 14 = 13
Second Bracket:
5 × 3 – 22
Do Orders first:
5 × 3 – 22 = 5 × 3 – 4
Next do Multiplication:
5 × 3 – 4 = 15 – 4
Next do Subtraction:
15 – 4 = 11
Now complete the final Addition:
(33 – 2 × 7) + (5 × 3 – 22)
= 13 + 11 = 24

Olympiad Test: Computation Operations - 3 - Question 6
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Evaluate 5 + 6 × 2 – 8 ÷ 4.

Detailed Solution: Question 6

We have 5 + 6 × 2 – 8 ÷ 4
= 5 + 6 × 2 – 2
= 5 + 12 – 2 
= 17 – 2 = 15 

Olympiad Test: Computation Operations - 3 - Question 7
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Evaluate 2 + 4 × 6 – 8 ÷ 4.

Detailed Solution: Question 7

Required value
= 2 + 4 × 6 – 8 ÷ 4 
= 2 + 4 × 6 – 2 
= 2 + 24 – 2
= 26 – 2 = 24 

Olympiad Test: Computation Operations - 3 - Question 8
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Evaluate  –24 – 45 ÷ 5 + 3

Detailed Solution: Question 8

Here – 24 – 45 ÷ 5 + 3
= – 24 – 9 + 3 
= – 33 + 3 = -30

Olympiad Test: Computation Operations - 3 - Question 9
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Evaluate  –43 + (8 × 11) ÷ 4.

Detailed Solution: Question 9

Here – 43 + (8 × 11) ÷ 4
= – 64 + (8 × 11) ÷ 4 
= – 64 + 88 ÷ 4 
= – 64 + 22 = – 42 

Olympiad Test: Computation Operations - 3 - Question 10
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Evaluate 9 + 2(7×3) – 92.

Detailed Solution: Question 10

We have 9 + 2(7×3) – 92
= 9 + 2(7×3) – 81 
= 9 + 2(21) – 81 
= 9 + 42 – 81 
= 51 – 81 = – 30

Olympiad Test: Computation Operations - 3 - Question 11
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Evaluate (63 ÷ 4) – 4 × 5 + 3(7 – 2).

Detailed Solution: Question 11

Given (63 ÷ 4) – 4 × 5 + 3(7 – 2)
= (216 ÷ 4) – 4 × 5 + 3(7 – 2) 
= (54) – 4 × 5 + 3(7 – 2) 
= 54 – 4 × 5 + 3(5) 
= 54 – 20 + 3(5) 
= 54 – 20 + 15
= 34 + 15 = 49

Olympiad Test: Computation Operations - 3 - Question 12
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Evaluate (3 + 9)2 – 8(6 – 3).

Detailed Solution: Question 12

We have (3 + 9)2 – 8(6 – 3)
= (12) × 2 – 8(3) 
= 24 – 24 = 0

Olympiad Test: Computation Operations - 3 - Question 13
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Evaluate 43 + 9 × 2 – 8

Detailed Solution: Question 13

Here 43 + 9 × 2 – 8
= 64 + 9 × 2 – 8 
= 64 + 18 – 8 
= 82 – 8 = 74 

Olympiad Test: Computation Operations - 3 - Question 14
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Evaluate 10 – 33 + 5 – 2(4 – 8).

Detailed Solution: Question 14

Here 10 – 33 + 5 – 2(4 – 8)
= 10 – 27 + 5 – 2(4 – 8) 
= 10 – 27 + 5 – 2 (– 4) 
= 10 – 27 + 5 – (– 8) 
= 10 – 27 + 5 – (– 8) 
= – 17 + 5 – (– 8) 
= – 17 + 5 + 8 
= – 12 + 8 = – 4

Olympiad Test: Computation Operations - 3 - Question 15
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Evaluate 6 × 2 + 3 – 35 ÷ 7.

Detailed Solution: Question 15

Here 6 × 2 + 3 – 35 ÷ 7
= 12 + 3 – 35 ÷ 7 
= 12 + 3 – 5
= 12 + 3 – 5 
= 15 – 5 = 10 

Olympiad Test: Computation Operations - 3 - Question 16
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What is the correct verbal phrase for the following expression?
9 – 8 x 2

Detailed Solution: Question 16

The order of operations states that multiplication and division must be performed before addition and subtraction. So for this expression, the correct verbal phrase would be: “the product of 8 and 2, subtracted from 9.”

Olympiad Test: Computation Operations - 3 - Question 17
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Which of the following expressions evaluates to 23?

Detailed Solution: Question 17

The correct answer is 5 + 4 x 6 – 6. The order of operations states that multiplication is to be performed before addition and subtraction.
= 5 + 4 × 6 – 6 = 5 + 24 – 6
= 5 + 24 – 6 = 29 – 6
= 29 – 6 = 23

Olympiad Test: Computation Operations - 3 - Question 18
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Determine which step you would do first in the following problem:
​32 ÷ 4 + (3 × 7) × 18 + 5 

Olympiad Test: Computation Operations - 3 - Question 19
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Determine which step you would do first in the following problem:
12 ÷ 3 × (15 – 6) + 3. 

Olympiad Test: Computation Operations - 3 - Question 20
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Determine which step you would do first in the following problem :
​5 – 4 + 4 + 2 × (28 ÷ 7). 

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About this Class 5 Practice Test

This test contains 20 MCQs on Olympiad Test: Computation Operations - 3 with detailed solutions for each question. It is part of the Math Olympiad for Class 5 course on EduRev, designed to align with the current Class 5 syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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