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).
- 125.009 + 69.999 + 104.989 = ?
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125.009 + 69.999 + 104.989 = ?
Lets assume, each value is approximated to nearest whole number
⇒ ? ≈ 125 + 70 + 105Correct Option: B
125.009 + 69.999 + 104.989 = ?
Lets assume, each value is approximated to nearest whole number
⇒ ? ≈ 125 + 70 + 105
⇒ ? ≈ 300
- 14.995 x 8.001 x 20.991 = ?
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? = 14.995 x 8.001 x 20.991
≈ 15 x 8 x 21Correct Option: B
? = 14.995 x 8.001 x 20.991
≈ 15 x 8 x 21 = 2520
- 36.98276421 x 21.00002 = ?
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36.98276421 x 21.00002
Using nearest value in whole number for 36.9827421 is 37 and 21.0002 is 21
≈ 37 x 21Correct 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
- 23/5 x 15/26 x 283.75 = ?
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? = 23/5 x 15/26 x 283.75
≈ 13/5 x 15/16 x 284Correct Option: D
? = 23/5 x 15/26 x 283.75
≈ 13/5 x 15/16 x 284 = 426 ≈ 425
- 157/8 x 231/5 + 34/5 x 51/8 = ?
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? = 127/8 x 116/5 + 19/5 x 41/8
= 14732/40 + 779/40 = 15511/40Correct Option: D
? = 127/8 x 116/5 + 19/5 x 41/8
= 14732/40 + 779/40 = 15511/40 = 387.7 ≈ 385
