en.wikipedia.org/wiki/Rounding

Rounding a numerical value means replacing it by another value that is
approximately equal .... Rounding a number y to the nearest integer requires
some tie-breaking rule for those cases when y is e...

www.factmonster.com/math/numbers/rounding.html

Rounding numbers rules including fractions and sums examples.

math.about.com/od/arithmetic/a/Rounding.htm

Learn these simple rules to round numbers correctly. Understand the meaning of
a rounding digit for decimals or whole numbers. Learn more.

www.mathsisfun.com/rounding-numbers.html

Rounding means making a number simpler but keeping its value close to ...
Example: 73 rounded to the nearest ten is 70, because 73 is closer to 70 than to
80.

academic.brooklyn.cuny.edu/geology/leveson/core/linksa/roundoff.html

GET THESE RULES FOR ROUNDING OFF NUMBERS. CASE A: In rounding off
numbers, the last figure kept should be unchanged if the first figure dropped is ...

www.mathatube.com/rounding-rules-for-rounding.html

Rules for rounding whole numbers. To round a number to a particular place, look
at the digit to its right. If it is 5 or more, round up. If it is 4 or less, round down.

www.bbc.co.uk/skillswise/factsheet/ma06roun-l1-f-rules-for-rounding

A summary of rules used when rounding numbers. Fullscreen; Word · PDF · Print.
Rules for rounding. Level 1. Entry 1 & 2 Start here · Entry 3 The basic concepts ...

www.chemteam.info/SigFigs/Rounding.html

When you round off, you change the value of the number, except if you round off
a zero. Following the old rules, you can round a number down in value four ...

www.math.com/school/subject1/lessons/S1U1L3DP.html

If it is five, the rule is to always round up (add one to the rounding digit). This rule
was created to "break the tie" when you are rounding a number that is exactly ...

www.montereyinstitute.org/courses/DevelopmentalMath/COURSE_TEXT_RESOURCE/U01_L1_T2_text_final.html

Rounding Whole Numbers. Learning Objective(s). · Learn the rules for rounding. ·
Round whole numbers to specific place values, including tens, hundreds, and ...