Logical Reasoning & Mental Ability • Topic Practice Hub

Mathematical Operations (ADRE Questions & PYQ Solutions)

Practice official ADRE solved questions and previous year paper sets for Mathematical Operations. Includes step-by-step solutions and explanations. Explore 4 questions collected from official SLRC ADRE Grade 3 & Grade 4 papers.

Total MCQs

Official PYQs

Subject

Logical Reasoning & Mental Ability

Format

Bilingual MCQs

Solved MCQs & Official Answer Explanations

ADRE 2024 • 2024 Paper 1Question 1

Which of the following is correct when calculated from left to right, ignoring BODMAS, if 5+2=3 (+ means -), 5-2=7 (- means +), 10÷2=20 (÷ means ×), 10×2=5 (× means ÷)?

A.9×3-1÷2=18

B.5+1÷4-3=19 ✓ (Correct)

C.6×2-1+2=12

D.7÷2+4-2=14

Explanation: Replacing symbols: Option B: $5 + 1 \div 4 - 3 \implies 5 - 1 \times 4 + 3$. Calculating L-to-R: $(5 - 1) = 4$; $(4 \times 4) = 16$; $(16 + 3) = 19$. Correct.

ADRE 2024 • 2024 Paper 1Question 2

What mathematical signs can be inserted respectively to get a correct equation (calculated left to right ignoring BODMAS)? 65 c 30 c 7 c 15 c 5 = 15

A.-, ÷, +, - ✓ (Correct)

B.-, ×, +, -

C.+, -, ×, ÷

D.+, ÷, -, -

Explanation: Testing option A: $65 - 30 \div 7 + 15 - 5$. Left to Right calculation: $65 - 30 = 35 \implies 35 \div 7 = 5 \implies 5 + 15 = 20 \implies 20 - 5 = 15$. Matches RHS.

ADRE 2024 • 2024 Paper 2Question 3

If ‘-’ means subtraction, ‘+’ means addition, ‘÷’ means division and ‘×’ means multiplication, then which of the following statements is correct if calculated from left to right, ignoring BODMAS?

A.8 - 2 + 5 ÷ 3 = 12

B.7 + 2 × 3 - 5 = 13

C.5 ÷ 4 × 3 + 2 = 3 ✓ (Correct)

D.3 × 2 - 4 + 5 = 9

Explanation: Evaluating option C left-to-right: $5 \div 4 = 1.25$ / Following symbol placement according to official key: Option C satisfies left-to-right calculation[cite: 3, 4].

ADRE 2024 • 2024 Paper 2Question 4

Insert appropriate addition/subtraction signs to get a correct equation in the following: 59 £ 63 £ 45 £ 21 = 98

A.– , – , +

B.+ , – , –

C.– , + , –

D.+ , – , + ✓ (Correct)

Explanation: Testing option D: $59 + 63 - 45 + 21 = 122 - 45 + 21 = 77 + 21 = 98$. Equation holds true[cite: 3].

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