Approximation Test 2-Solved questions with detailed explanations for SSC, IBPS, SBI PO, RRB, RBI, CSE, CGL, CHSL, CDA, CSE, UPSC

1)

What approximate value should come in place of the question mark (?) in the given questions?

175×28+275×27.98=?

[Andhra Bank (PO), 2009]

A)
11800
B)
12600
C)
12800
D)
11600
E)
12200

Discussion

2)

561204×58=?×55555

[IOB (PO), 2008]

A)
606
B)
646
C)
556
D)
716
E)
586

Discussion

3)

(444% of 531)÷972= ?

[IOB (PO), 2008]

A)
4.5
B)
0.5
C)
2.5
D)
8.5
E)
6.5

Answer: Option C

Explanation

Given,

(444% of 531)÷972= ?

It can be approximated as

(440% of 530)÷970= ?

$= (\frac{400}{100} \times 500) + 1000 = ?$

= 2000÷1000

= 2 ≈ 2.5

Hence, Option C is correct.

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Approximation

Discussion

4)

180% of 25501 + 50% of 28999 =?

[Andhra Bank (PO), 2008]

A)
62400
B)
64000
C)
60400
D)
64200
E)
61600

Answer: Option C

Explanation

Given,

180% of 25501 + 50% of 28999 =?

It can approximated as

$\frac{180}{100} \times 25000 + 50 % o f 29000 = ?$

= 250×180+14500

= 45000+14500

= 59500 ≈ 60400

Hence, Option C is correct.

For more Short tricks and formulae click

Approximation

Discussion

5)

(9321+5406÷1001)÷(498+929+660)=?

?498[IOB (PO), 2008]

A)
13.5
B)
4.5
C)
16.5
D)
7.5
E)
10.5

Discussion

Approximation Test-2 (Rounding off to Integers)

Answer: Option C

Answer: Option A

Answer: Option C

Answer: Option C

Answer: Option B