Approximation Test-5 (Approximation of decimal figures)

Answer: Option C

Explanation

Given,

133.008×2.97-111.87+74.13=?

It can also be approximated as

130×3-110+75=?

= 390-35

= 355 ≈ 357

Hence, option C is correct.

Answer: Option B

Explanation

Given,

32.1×2799÷549+120=?

It can also be approximated as

32×2800÷560+120=?

[ applying BODMAS]

= 32×5+120

= 160+120

= 280 ≈ 284

Hence, Option B is correct.

Answer: Option D

Explanation

Given,

12.564×22.009×17.932=?

It can aslo be approximated as

13×22×18=?

= 286×18

= 5148 ≈ 4959

Hence, Option D is correct.

Answer: Option A

Explanation

Given,

31.35÷3.90×15=?

It can aslo be approximated as

31.35÷3.90×15=?

= 32÷4×15=?

= 8×15

= 120

Hence, option A is correct.

Answer: Option C

Explanation

Given,

4.99×12.865+599=?

It can also be approximated as

= 5×13+599

= 65+599

= 664 ≈ 665

Hence, option C is correct.