More Lessons for GCSE Maths
In many instances exact numbers are not necessary or even desirable. In those circumstances approximations are given. Rounding is one form of approximation. A number can also be approximated to a given number of decimal places (d.p.) This refers to the quantity of numbers written after a decimal point.
Approximations, Rounding revision
Rounding to nearest 10
Rounding to decimal places
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