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Class 10 Exam  >  Class 10 Tests  >  Science Olympiad Test: Mathematical Operations - Class 10 MCQ

Science Olympiad Test: Mathematical Operations - Class 10 MCQ


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15 Questions MCQ Test - Science Olympiad Test: Mathematical Operations

Science Olympiad Test: Mathematical Operations for Class 10 2024 is part of Class 10 preparation. The Science Olympiad Test: Mathematical Operations questions and answers have been prepared according to the Class 10 exam syllabus.The Science Olympiad Test: Mathematical Operations MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Science Olympiad Test: Mathematical Operations below.
Solutions of Science Olympiad Test: Mathematical Operations questions in English are available as part of our course for Class 10 & Science Olympiad Test: Mathematical Operations solutions in Hindi for Class 10 course. Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free. Attempt Science Olympiad Test: Mathematical Operations | 15 questions in 15 minutes | Mock test for Class 10 preparation | Free important questions MCQ to study for Class 10 Exam | Download free PDF with solutions
Science Olympiad Test: Mathematical Operations - Question 1
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If 20 - 10 means 200, 8 ÷ 4 means 12, 6 - 2 means 4, then 100 - 10 × 1000 ÷ 1000 + 100 × 10 =?

Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 1

Given 20 - 10 = 200
but 20 × 10 = 200; - stands for ×.
Given 8 ÷ 4 = 12 but 8 + 4 = 12
∴ ÷ stands for +
Given 6 × 2 = 4 but 6 - 2 = 4
∴ × stands for -
Given expression
= 100 - 10 × 1000 ÷ 1000 + 100 × 10
= 100 × 10 - 1000 + 1000 ÷ 100 - 10
= 1000 - 1000 + 1000 ÷ 100 - 10
= 1000 - 1000 + 10 - 10
= 0 + 0 = 0

Science Olympiad Test: Mathematical Operations - Question 2
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If + means -, - means ×, ÷ means + and + means ÷ then (3 - 5 ÷ 19) × 8 + 6 =?

Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 2

Using correct symbols, we have
(3 × 15 + 19) ÷ 8 - 6
= (45 + 19) ÷ 8 - 6
= 64 ÷ 8 - 6 = 8 - 6 = 2

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Science Olympiad Test: Mathematical Operations - Question 3
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If P means division, T means addition, M means subtraction, and D means multiplication then what will be the value of expression 12M12D28P7T15?

Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 3

12 M 12 D 28 P7 T 15
= 12 - 12 × 28 ÷ 7 + 15
= 12 - 12 × 4 + 15
= 12 - 48 + 15
= 27 - 48 = -21

Science Olympiad Test: Mathematical Operations - Question 4
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If 36 × 92 = 9623, 25 × 82 = 8522, 68 × 75 = 7856 then 47 × 52 =?
Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 4

The rule is the digits are jumbled in an order.
AB × CD = CBDA
36 × 92 = 9623
25 × 82 = 8522
68 × 75 = 7856
Similarly,
47 × 52 = 5724

Science Olympiad Test: Mathematical Operations - Question 5
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If 3 + 5 = 16, 7 + 9 = 64, 10 + 12 = 121 then 11 + 3 =?
Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 5

Science Olympiad Test: Mathematical Operations - Question 6
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If +  means minus, × means divided by, ÷ means plus, × means multiplied by then which of the following will be the value of expression 252 × 9 - 5 + 32 ÷ 92?
Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 6

252 × 9 - 5 + 32 ÷ 92
= 252 ÷ 9 × 5 - 32 + 92
= 28 × 5 - 32 + 92
= 140 - 32 + 92 = 232 - 32 = 200

Science Olympiad Test: Mathematical Operations - Question 7
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In the following question, three statements of numbers following some rules are given. Find the rule and accordingly find the value of the number.

If 7 * 3 = 52; 9 * 5 = 86; 3 * 4 = 13 then 5 * 7 =?
Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 7

a * b = a2b
5 * 7  = 52 + 7 = 25 + 7 = 32

Science Olympiad Test: Mathematical Operations - Question 8
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In the following question, three statements of numbers following some rules are given. Find the rule and accordingly find the value of the number.

If 43 = 156; 35 = 824; 42 = 153 then 32 =?
Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 8

ab = a2 - 1 b2 - 1
43 = 42 - 1  32 - 1 = 158
32 = 32 - 1  22 - 1 = 83

Science Olympiad Test: Mathematical Operations - Question 9
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In the following question, three statements of numbers following some rules are given. Find the rule and accordingly find the value of the number.

If 213 = 419; 322 = 924; 415 = 16125; then 215 =?
Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 9

213 = 22 132 = 419
322 = 32 222 = 924
215 = 22 152 = 4125

Science Olympiad Test: Mathematical Operations - Question 10
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In the following question, three statements of numbers following some rules are given. Find the rule and accordingly find the value of the number.

4 × 8 = 42; 6 × 4 = 23; 8 × 6 = 34; then 2 × 4 =?
Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 10

Science Olympiad Test: Mathematical Operations - Question 11
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In each of the following questions, different alphabet stands for various symbols as indicated below

Addition: O, Subtraction: M, Multiplication: A Division: Q, Equal to X, Greater than Y, Less than Z

Out of the four alternatives, only one is correctly identifying the correct alternative.
Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 11

(a) 10 × 2 < 2 ÷ 2 × 10 ÷ 2
20 < 1 × 5 ⇒ 20 < 5
(b) 6 - 2 > 10 ÷ 2 × 3 + 1 ⇒ 4 > 5 × 3 + 1
⇒ 4 > 16
(c) 3 + 2 = 2 ÷ 1 × 3 + 1 ⇒ 5 + 2 × 3 + 1
5 = 7
(d) 10 × 2 > 2 ÷ 1 × 10 ÷ 2 ⇒ 20 > 2 × 5
20 > 10

Science Olympiad Test: Mathematical Operations - Question 12
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In the following question, the given equation becomes correct due to the interchange of two signs. Find the correct alternative so that the equation becomes correct.

12 ÷  2 - 6 × 3 + 8 = 16
Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 12

(a) 12 + 2 - 6 × 3 ÷ 8 ≠ 16
(b) 12 ÷ 2 + 6 × 3 - 8
6 + 1 8 - 8 = 16
∴ (b) is correct.

Science Olympiad Test: Mathematical Operations - Question 13
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In the following question, the given equation becomes correct due to the interchange of two signs. Find the correct alternative so that the equation becomes correct.

5 +  6 ÷ 3 - 12 × 2 = 17
Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 13

5 + 6 × 3 - 12 ÷ 2 = 17
= 5 + 18 - 6 = 17

Science Olympiad Test: Mathematical Operations - Question 14
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In the following question, the given equation becomes correct due to the interchange of two signs. Find the correct alternative so that the equation becomes correct.

10 +  10 ÷ 10 × 10 = 10
Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 14

10 + 10 ÷ 10 - 10 × 10 = 10
(a) 10 - 10 ÷ 10 + 10 × 10 = 10 - 1 + 100 ≠ 10
(b) 10 ÷ 10 + 10 - 10 × 10 = 10
1 +  10 - 100 ≠ 10
(c) 10 × 10 ÷ 10 - 10 + 10 = 10
10 × 1 - 10 + 10 = 10
10 =  10
∴ (c) is correct.

Science Olympiad Test: Mathematical Operations - Question 15
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In the following question, the given equation becomes correct due to the interchange of two signs. Find the correct alternative so that the equation becomes correct.

2 ×  3 + 6 - 12 ÷ 4 = 17
Detailed Solution for Science Olympiad Test: Mathematical Operations - Question 15

2 + 3 × 6 - 12 ÷ 4 = 17
2 + 3  × 6 - 3 = 2 + 18 - 3 = 17

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