Estimation and rounding

I can round to the nearest 100 or 10 or whole number or to 1 or 2 decimal places.

I can recognise when values have been rounded and state sensible suggestions of what the unrounded value could have been.

I can round numbers to three decimal places.

I can round numbers to any number of decimal places.

I can round integers to one significant figure.

I can round integers to a required number of significant figures.

I can round decimals to a required number of significant figures.

I can appreciate what is meant by a suitable degree of accuracy.

I can estimate numerical calculations.

I can estimate and check if solutions to problems are of the correct magnitude.

I can estimate a value by truncating to a given degree of accuracy.

I can determine whether calculations using rounding or truncating will give an underestimate or overestimate.

I can appreciate the impact of rounding errors when using a calculator (or other technology), and the way that these can be compounded to result in large inaccuracies.

I can calculate possible errors expressed using inequality notation a ≤ x < b.

I can use inequality notation $$a ≤ x < b$$ to express errors in calculations.

I can use my knowledge of estimation and rounding to solve problems.