Approximation Test-4 (Approximation of decimal figures)

Answer: Option E

Explanation

Given,

6$\frac{2}{5}$ of 248.25= ? of 2398.5

It can also be approximated as

$\frac{32}{5}\times 250=?\times 2400$

= 1600= ?×2400

=$\frac{1600}{2400}=\frac{2}{3}$

Hence, option E is correct.

Answer: Option C

Explanation

Given,

$\text{6}\sqrt{\text{2}}\text{ + 14.275=? of\hspace{0.17em}196.35}$

It can also be approximated as

$\text{6}\sqrt{\text{2}}\text{ + 14=? of\hspace{0.17em}200}$

= 6×1.14+14=? of 200

= 6.84+14= ? of 200

= 20.84= ? of 200

= $\frac{20.84}{200}$

= $\frac{1}{9}\approx \frac{1}{8}$

Hence, option C is correct.

Answer: Option C

Explanation

Given,

1524.79×19.92+495.26=?

It can also be approximated as

1524.79×19.92+495.26=?

= 1525×20+500=?

= 30500+500

= 31000

Hence, option C is correct.

Answer: Option D

Explanation

Given,

1548.45+3065.15÷15.058=?

It can also be approximated as

1550+3100÷15=?

= 1550+206

= 1756 ≈ 1750

Hence, Option D is correct.

Answer: Option D

Explanation

Given,

21.7% of 514.9-43.44=$\frac{?}{5.5}$

It can also be approximated as

22% of 515-43=$\frac{?}{5.5}$

= 110-43=$\frac{?}{5.5}$

= 67= $\frac{?}{5.5}$

= 67×5.5 (or) 368.5 =?

= 370 ≈ 375

Hence, Option D is correct.