Mcq on simplification with answers
61) \(\displaystyle 25\div 0.5-0.5=?\)
(a) 25
(b) 0
(c) 36.5
(d) 49.5
(e) None of these
Solution: (d)
\(\displaystyle \frac{{25}}{{0.5}}-0.5=50-0.5=49.5\)
62) \(\displaystyle 5\times ?=2862\div 3\)
(a) 4770
(b) 195.4
(c) 4077
(d) 170.6
(e) None of these
Solution: (e)
\(\displaystyle 5\times ?=954\)
\(\displaystyle ?=\frac{{954}}{5}=190.8\)
63) \(\displaystyle 8080\div 80\div 8=?\)
(a) 880
(b) 12.625
(c) 808
(d) 16.225
(e) None of these
Solution: (b)
\(\displaystyle \frac{{8080}}{{80\times 80}}=12.625\)
64) 436.56 – 625.43 + 312.55 = ?
(a) 125.68
(b) 135.86
(c) 132.68
(d) 123.86
(e) None of these
Solution: (e)
436.56 – 625.43 + 312.55 = – 188.87 + 312 .55 = 123.68
65) \(\displaystyle 4545\div 50\div 5=?\)
(a) 445.5
(b) 19.16
(c) 454.5
(d) 18.18
(e) None of these
Solution: (d)
\(\displaystyle \frac{{4545}}{{50}}\div 5=\frac{{90.9}}{5}=18.18\)
66) \(\displaystyle 5\times ?=2637\div 3\)
(a) 4395
(b) 157.8
(c) 4539
(d) 175.6
(e) None of these
Solution: (e)
\(\displaystyle 5\times ?=\frac{{2637}}{3}=879\)
or, \(\displaystyle ?=\frac{{879}}{5}=175.8\)
67) \(\displaystyle 1.5\times (52+2.5)=?\)
(a) 30.1
(b) 31.2
(c) 32.1
(d) 33.2
(e) None of these
Solution: (b)
\(\displaystyle \frac{3}{2}\times 52\times \frac{2}{5}=\frac{{156}}{5}=31.2\)
68) \(\displaystyle 8.2\times 4.4\times 5.5=?\)
(a) 184.88
(b) 185.44
(c) 196.88
(d) 198.44
(e) None of these
Solution: (d)
\(\displaystyle 8.2\times 4.4\times 5.5=\frac{{82}}{{10}}\times \frac{{44}}{{10}}\times \frac{{55}}{{10}}=\frac{{198440}}{{1000}}=198.44\)
69) 17% of 250 + ? = 108
(a) 65.5
(b) 73.5
(c) 56.5
(d) 68.5
(e) None of these
Solution: (a)
\(\displaystyle \frac{{17}}{{100}}\times 250+?=17\times 2.5+?=108\)
or, ? = 108 – 42.5 = 65.5
70) \(\displaystyle 45\div 1.5-0.5=?\)
(a) 22.5
(b) 25.5
(c) 29.5
(d) 45
(e) None of these
Solution: (c)
\(\displaystyle 45\div 1.5-0.5=30-0.5=29.5\)
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