Mathematical Operation questions Practice Question and Answer
8 Q: By interchanging the given two signs and numbers which of the following equation will be correct?
+ and –, 7 and 6
457 064c8fa5c3fde307e3f4fd7f6
64c8fa5c3fde307e3f4fd7f6+ and –, 7 and 6
- 14 × 7 + 6 – 3 ÷ 1 = 20true
- 28 × 7 + 5 ÷ 1 – 6 = 17false
- 37 – 6 × 3 + 4 ÷ 1 = 8false
- 47 × 2 – 6 + 4 ÷ 2 = 13false
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Answer : 1. "4 × 7 + 6 – 3 ÷ 1 = 20"
Q: By interchanging the given two signs and numbers which of the following equation will be not correct?
÷ and ×, 1 and 3
461 064be6fb82dc867f59312c0f3
64be6fb82dc867f59312c0f3÷ and ×, 1 and 3
- 16 ÷ 3 – 1 + 4 × 2 = 5false
- 24 × 3 – 1 + 8 ÷ 2 = 9true
- 35 – 8 × 3 + 9 ÷ 1 = 24false
- 46 + 4 – 9 × 3 ÷ 1 = –17false
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Answer : 2. "4 × 3 – 1 + 8 ÷ 2 = 9"
Q: If + means −, − means ×, × means ÷, and ÷ means +, what will be the value of the following expression?
3 ÷ 6 + 3 – 4 × 4 = ?
492 064996f50dad6f2e01f6a3ef4
64996f50dad6f2e01f6a3ef43 ÷ 6 + 3 – 4 × 4 = ?
- 18false
- 25false
- 36true
- 44false
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Answer : 3. "6"
Q: Which of the following interchange of numbers and mathematical signs would make the given equation correct?
30 ÷ 6 × 4 + 15−35 = 25
619 0647f1642f4063d472f2c7c79
647f1642f4063d472f2c7c7930 ÷ 6 × 4 + 15−35 = 25
- 125 and 30, × and−false
- 24 and 6, + and−false
- 325 and 35, × and ÷true
- 430 and 35, −and ÷false
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Answer : 3. "25 and 35, × and ÷"
Q: Which two signs and two numbers should be interchanged in the following equation to make it correct?
150 × 15 + 14 – 9 ÷ 2 =6
486 0647f1363772333474b967b41
647f1363772333474b967b41150 × 15 + 14 – 9 ÷ 2 =6
- 19, 2, −, ×false
- 29, 2, ÷, ×true
- 3150, 2, ÷, −false
- 415, 9, +, ÷false
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Answer : 2. "9, 2, ÷, ×"
Q: If ‘+’ means ‘÷’, ‘ ̶ ’ means ‘+’, ‘×’ means ‘ ̶ ’ and ‘÷’ means ‘×’, what will be the value of the following expression?
[{(38 × 23) - (4 ÷ 3)} + (6 - 3)] ÷ 2
473 0647f06eea33e0f47b76e6944
647f06eea33e0f47b76e6944[{(38 × 23) - (4 ÷ 3)} + (6 - 3)] ÷ 2
- 13false
- 26true
- 38false
- 412false
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Answer : 2. "6"
Q: Which of the following interchanges of numbers and mathematical signs would make the given equation correct?
729 × 81 ÷ 20 + 16 − 6 = 50
481 06479c210bf323e479a7fd7fc
6479c210bf323e479a7fd7fc729 × 81 ÷ 20 + 16 − 6 = 50
- 16 and 20, × and ÷true
- 220 and 50, + and −false
- 316 and 50, × and +false
- 416 and 20, + and ÷false
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Answer : 1. "6 and 20, × and ÷"
Q: By interchanging the given two signs which of the following equation will be correct?
÷ and +
420 0647865bdd0c6d8fd0853292b
647865bdd0c6d8fd0853292b÷ and +
- 18 + 4 × 5 ÷ 2 – 6 = 7false
- 216 + 8 × 2 ÷ 6 – 4 = 8false
- 318 + 2 × 6 ÷ 3 – 7 = 50true
- 411 + 8 × 16 ÷ 4 – 7 = 20false
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