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Simplification Practice Set

1. 4500 ÷ 90 + 70 × 45 = ?
A. 3400
B. 3500
C. 3200
D. 3600

Answer: Option C
Explanation: ? = 4500 ÷ 90 + 70 × 45
= 50 + 3150
= 3200

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2. 153 × 2.7 ÷ 0.3 + 21 = ?
A. 1278
B. 1398
C. 1286
D. 1386

Answer: Option B
Explanation:? = 153 × 2.7 ÷ 0.3 + 21
= 153 × 9 + 2
= 1377 + 21
= 1398

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3. 612 × 81 ÷ 3 ÷ 3 = ?
A. 5594
B. 5518
C. 5520
D. 5508

Answer: Option D
Explanation:? = 612 × 81 ÷ 3 ÷ 3
= 612 × 81 × 13 × 13
= 612 × 9 = 5508

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4. 140 का 40% + 600 का ?% = 660 का 60%

40% of 140 + ?% of 600 = 60% of 660

A. 5623
B. 5513
C. 5613
D. 5713

Answer: Option A
Explanation:140 का 40% + 600 का ?% = 660 का 60%
or, 56 + 6 × ? = 396
or 6 × ? = 396 – 56
? = 3466 = 5623

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5. 180 का ?% = 90 का 90%
A. 54
B. 48
C. 45
D. 42

Answer: Option C
Explanation:180 का ?% = 90 का 90%
or, 180 × ? = 90 × 90
? = 90 × 90180
= 45

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6. 1400 का ?% = 4637 – 4245
A. 24
B. 28
C. 32
D. 22

Answer: Option B
Explanation:1400 का ?% = 4637 – 4245
or 14 × ? = 392
? = 39214392/14
= 28

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