Use rounded values to estimate close the answer to a calculation. This is a useful non-calculator skill. Refresh your knowledge with these guides on rounding and significant figures. Rounding to ...

Learning to assess the reasonableness of an answer is an important mathematical skill. Learning to assess the reasonableness of an answer is an important mathematical skill. It’s your child’s way of ...

It’s so tempting to round off numbers and present your audience with pretty whole numbers rather than cluttering up the text with decimal points and a string of digits. Sometimes rounding a number up ...