Verb Master 動詞達人

【外在動詞】Round - 數字專論

Round up, Round down, Round to, Round off to

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Round down，無條件捨去(讓數字接近0)

Round down 383.83 to an integer = 383
(無條件去位到整數)
Round down 383.38 to the 10th digit = 383.3
(無條件捨去到小數一位)
Round down 383 to the hundred = 300
(無條件捨去到百位數)

 

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Round up, 無條件進位(讓數字遠離0)

Round up 131.131 to two decimal places = 131.131(無條件進位到小數點第二位)
Round up 131.131 to the nearest ten = 132
(無條件進位到十位數)
Round up -131.131 to zero decimal places = -139 (無條件進位到整數)
Round up -131.131 to the nearest hundred = -200
(無條件進位到最近百位數)
注意：如果是負數，round up是更大的負數，遠離0

 

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Round to，四捨五入

Round 289 to the nearest hundred = 300
(四捨五入取最接近百位數)
Round 1.64 to the nearest tenth = 1.6
(四捨五入到小數點第一位)
Round 3.54 to the nearest integer = 4
(四捨五入成整數)

 

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Round off to是通稱，把數字簡化，涵蓋round down/up/to，一般用四捨五入，等於Round to

Round off your weight and run it to the nearest pound.
(把妳的體重弄成整數)
Round off 131.1313 to the thousandth digit = Round down to 131.131.
(四捨五入到小數第三位)
Round off 131.135 to the hundredth digit =
Round up to 131.14.
(四捨五入到小數第二位)