Approximation Test-6 (Approximation of decimal figures)

Answer: Option D

Explanation

Given,

2418.065+88÷14.2×6

It can also be approximates as

= 2418+88÷14×16

= 2418+6.3×6

[ applying BODMAS]

= 2418+38

= 2456 ≈ 2455

Hence, Option D is correct.

Answer: Option C

Explanation

Given,

84.6624×18.9865÷11.0124=?

It can also be approximated as

= 85×19÷11=?

= 85×1.72

= 85×2

= 170 ≈ 189

Hence, Option C is correct.

Answer: Option D

Explanation

Given,

(1786+23.894+3251)÷50=?

It can also be approximated as

= (1790+24+3250)÷50=?

= (5140+24)÷50

= 5160÷50

= 103 ≈ 101

Hence, Option D is correct.

Answer: Option E

Explanation

Given,

(2.0001)³=?

It can also be approximates as

= (2.0001)³=?

= (2)³

=8

Hence, Option E is correct.

Answer: Option B

Explanation

Given,

5.6% of 240÷0.3% of 480=?

It can also be approximated as

= 5.6% of 240÷$\frac{3}{1000}\times$480=?

= 5.6×2.4÷1.44

= 13.44÷1.44

= 9.33

Hence, Option B is correct.