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. View Hint View Answer Discuss in Forum

    (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. View Hint View Answer Discuss in Forum

    ? = 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. View Hint View Answer Discuss in Forum

    ? = 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. View Hint View Answer Discuss in Forum

    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. View Hint View Answer Discuss in Forum

    ? = 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