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Overview
Accuplacer Arithmetic
Whole number operations
3. Rounding and estimation
3.6 Rounding numbers to the nearest ten
Rounding Numbers to the Nearest Ten
Learn the ones-digit rule for rounding numbers to the nearest ten, with clear examples and a number line to check your work.
What You'll Learn
Identify the tens the number sits between before deciding which one it is closer to
Check the ones digit to apply the rule: digits 0 to 4 round down, digits 5 to 9 round up
Recognize that a number exactly halfway, like \(45\), still rounds up to the next ten
Use a number line to visually confirm whether a number rounds up or down
Apply rounding to the nearest ten as a first step in estimating sums and differences
This Unit Includes
Learning resources
TEST-PREP Curriculum Aligned