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to round off

to round off

2 3.3
To change a number to the nearest whole number to make it simpler
  • phrasal verb
  • /raʊnd ɔf/
translation icon : redondear
  • This tells us that something that cost $1.00 in the base period 1982-1984 would have cost $1.34 (that is 1.338 rounded off to the nearest cent) in 1990.

Examples

  • When calculating the total cost, it is helpful to round off the prices to the nearest dollar.

  • I know, Pacquiao is technically 33, but he turns 34 on December 17th, so I'm rounding that number off.

    Blog text (4)
  • So let me round these off just so that you know.

  • But just to round this off, it's not that I think we should just go, oh, all is one.

  • I've rounded off the figures, of course.

  • Sam rounds his hourly rate off to $50.

    Blog text (27)
  • For convenience, the figures have been rounded off to the nearest tenth (0.0).

    Academic text (1994)
  • What it does is, every time there's a bank transaction where interest is computed you know, thousands a day, the computer ends up with these fractions of a cent, which it usually rounds off.

  • For easier budgeting, I decided to round off my expenses to the nearest whole number.

  • In the final report, we will round off all figures to simplify the data presentation.

Synonyms

to round
vsto round off
  • Specialized
25 3.0

Adjust a number to the nearest whole number for simplicity

focuses on simplifying to the nearest whole or numbers ending in zero
to round out
vsto round off
1 3.8

Change a number to the nearest whole number

prefers simplifying to nearest whole or numbers ending in zero

How Precise

to round off
2 3.3
to truncate
8 7.0

Surface Forms

round off infinitive
rounded off past participle
rounding off present participle
rounds off third person singular

Morphology

round + off

The verb 'round' (make more rounded) maps metaphorically onto making a number 'round' (without decimals), and the particle 'off' conveys a sense of completion or reduction, so a learner who knows the constituents can plausibly infer a numeric 'making round' action. However, the precise numeric operation (nearest whole number or to a zero) and the conventional use in mathematics is a metaphorical extension and not fully predictable without exposure, so it is only partially transparent.

Etymology

Round off for numbers comes from the idea of making a value more round and easy to use. Changing 4.57 to 5 is like smoothing a sharp corner, so it means 'to make a number simpler'.