Rounding, estimation and bounds

By the end you’ll be able to

• Round to a given number of decimal places or significant figures and choose a sensible degree of accuracy for the context
• Estimate answers by rounding each value to 1 significant figure, and say whether the estimate is an over- or underestimate
• Write error intervals for rounded or truncated values using inequality notation, e.g. $6.45 \le x < 6.55$