A choice of questions about the current world population which is constantly changing.
Estimate the distances shown on this photograph of the moon's surface.
March 14th is Pi Day. The third month and the 14th day relates to 3.14 which is pi to three significant figures. How many figures of pi can you memorise?
Round off the given numbers to 1 decimal place then add the answers together.
Round off the given numbers to 2 decimal places then add the answers together.
Round off the given numbers to the nearest whole number then add the answers together.
A number line showing tenths and hundredths with draggable arrows. This is a visual aid designed to be projected onto a whiteboard for whole class exposition
An exercise on rounding values in a calculation to find an approximate estimate of the answer.
A self marking exercise requiring students to round numbers to a given number of decimal places.
A self marking exercise requiring students to round numbers to a given number of significant figures.
If the last card put down equals the previous card to the nearest whole number then all players race to shout SNAP!
Round the numbers to the nearest whole number or the given power of ten.
Determine the upper and lower bounds when rounding or truncating quantities used in calculations.
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