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[WpProQuiz 7601]
Simplification
Directions (1 – 5): What value should come in the place of (?) in the following questions?
1) 14.28 % of 210 + 42.851 % of 350 + 71.428% of 140 = ?
a) 220
b) 240
c) 260
d) 280
e) 320
2) 23 * ? + 117 = 672– 232
a) 120
b) 150
c) 180
d) 210
e) 100
3) (21 ÷ 798) * (49 ÷ 735) * ? = 10
a) 5300
b) 5200
c) 5500
d) 5700
e) 5800
4) 32.5 % of 80 + 70 % of 310 + 127 = ?
a) 340
b) 370
c) 390
d) 410
e) 430
5) √1156 + √900 – (6859)(1/3) =?
a) 43
b) 45
c) 47
d) 49
e) 51
Approximation
Directions (Q. 6 – 10): What approximate value should come in place of (?) in the following questions?
6) (16.92)2 – (9.11)2 + (325.17 + 549.85) ÷ ? = 233
a) 35
b) 50
c) 65
d) 25
e) 75
7) 18.92 % of 899 + 14.199 % of 1047 = 20 % of ?
a) 1650
b) 1860
c) 1940
d) 1590
e) 1720
8) 27 × 349.19 ÷ 5.11 – ? – 129.52 = 12
a) 1460
b) 1750
c) 1520
d) 1640
e) 1880
9) 299.78 = 23 × 255.89 ÷ 8.11 – ? – 159.75
a) 312
b) 454
c) 276
d) 385
e) 493
10) (5/8.92) of 179.81 × 60.12 ÷ 14.93 – ? = 122Â
a) 316
b) 382
c) 424
d) 460
e) 278
Answers:
Directions (1-5):
1) Answer: d)
14.28 % of 210 + 42.851 % of 350 + 71.428% of 140 = ?
1/7 * 210 + 3/7 * 350 + 5/7 * 140 = ?
30 + 150 + 100 = ?
280 = ?
2) Answer: c)
23 * ? + 117 = 672 – 232
23 * ? + 117 = 4489 – 232
? * 23 = 4140
? = 180
3) Answer: d)
(21 ÷ 798) * (49 ÷ 735) * ? = 10
1/38 * 1/15 * ? = 10
? = 5700
4) Answer: b)
32.5 % of 80 + 70 % of 310 + 127 = ?
26 + 217 + 127 = ?
370 = ?
5) Answer: b)
√1156 + √900 – (6859)(1/3) =?
34 + 30 – 19 = ?
45 = ?
Directions (6-10) :
6) Answer: a)
(16.92)2 – (9.11)2 + (325.17 + 549.85) ÷ x = 233
172 – 92 + (325 + 550)/x = 233
289 – 81 + (875/x) = 233
(875/x) = 233 – 289 + 81
(875/x) = 25
x = 875/25 = 35
7) Answer: d)
18.92 % of 899 + 14.199 % of 1047 = 20 % of x
(19/100) * 900 + (14/100) * 1050 = (20/100) * x
171 + 147 = (x/5)
318 * 5 = x
x = 1590
8) Answer: b)
27 × 349.19 ÷ 5.11 – x – 129.52 = 12
(27 * 350)/5 – x – 130 = 12
1890 – x – 130 = 12
1890 – 130 – 12 = x
x = 1748 = 1750
9) Answer: c)
299.78 = 23 × 255.89 ÷ 8.11 – x – 159.75
300 = 23 * (256/8) – x – 160
x = 736 – 160 – 300 = 276
10) Answer: e)
(5/8.92) of 179.81 × 60.12 ÷ 14.93 – x = 122
(5/9) * 180 * (60/15) – 122 = x
x = 400 – 122 = 278
