## Approximation

#### Approximation

Direction: What approximate value should come in place of the question mark(?) in the following question ? (Note that you are not expected to calculate the exact value).

1. (2/3) x (6/8) x (2/3) x (3/4) = ?
1. 0.25
2. 0.5
3. 1.45
4. 11.8

1. (2/3) x (6/8) x (2/3) x (3/4) = 1/4

##### Correct Option: A

(2/3) x (6/8) x (2/3) x (3/4) = 1/4 = 0.25

1. 157/8 x 231/5 + 34/5 x 51/8 = ?
1. 360
2. 350
3. 370
4. 385

1. ? = 127/8 x 116/5 + 19/5 x 41/8
= 14732/40 + 779/40 = 15511/40

##### Correct Option: D

? = 127/8 x 116/5 + 19/5 x 41/8
= 14732/40 + 779/40 = 15511/40 = 387.7 ≈ 385

1. 23/5 x 15/26 x 283.75 = ?
1. 440
2. 435
3. 410
4. 425

1. ? = 23/5 x 15/26 x 283.75
≈ 13/5 x 15/16 x 284

##### Correct Option: D

? = 23/5 x 15/26 x 283.75
≈ 13/5 x 15/16 x 284 = 426 ≈ 425

1. 36.98276421 x 21.00002 = ?
1. 775
2. 785
3. 800
4. 805

1. 36.98276421 x 21.00002
Using nearest value in whole number for 36.9827421 is 37 and 21.0002 is 21
≈ 37 x 21

##### Correct Option: A

36.98276421 x 21.00002
Using nearest value in whole number for 36.9827421 is 37 and 21.0002 is 21
≈ 37 x 21 = 777 ≈ 775

1. 14.995 x 8.001 x 20.991 = ?
1. 1950
2. 2520
3. 2200
4. 1520

1. ? = 14.995 x 8.001 x 20.991
≈ 15 x 8 x 21

##### Correct Option: B

? = 14.995 x 8.001 x 20.991
≈ 15 x 8 x 21 = 2520