Rounding Ten
Round the numbers to the nearest whole number or the given power of ten.
Rounding DP
A self marking exercise requiring students to round numbers to a given number of decimal places.
Rounding SF
A self marking exercise requiring students to round numbers to a given number of significant figures.
Rounding Snap
If the last card put down equals the previous card to the nearest whole number then all players race to shout SNAP!
Rough Answers
An exercise on rounding values in a calculation to find an approximate estimate of the answer.
Upper and Lower Bounds
Determine the upper and lower bounds when rounding or truncating quantities used in calculations.
Rounding Video
A reminder of how to round numbers to significant figures, decimal places and to the nearest power of ten.
Upper and Lower Bounds Video
A reminder of how to find the limits of accuracy of rounded values.
Rounding Snap
If the last card put down equals the previous card to the nearest whole number then all players race to shout SNAP!
Rounding 1dp
Round off the given numbers to 1 decimal place then add the answers together.
Rounding 2dp
Round off the given numbers to 2 decimal places then add the answers together.
Rounding Whole
Round off the given numbers to the nearest whole number then add the answers together.
11 items are currently in this category.
Teachers might find the complete Approximation Topic List useful.
Approximating a quantity is often to get a value that is easier to use or understand, at the cost of making it less precise. This approximation is very important in dealing with answers to mathematical problems and making them relevant to the real world. Rounding to a given number of decimal places or significant figures is required of pupils.
The error introduced when approximating a value may be further magnified with subsequent calculations. Understanding this error and how it can be minimised is another important aspect of this topic.
See also the "Rounding" and "Estimating" Topic pages.
