The rule for multiplying and dividing is very similar to the rule for adding and subtracting. a) We have \({+5}\) and \({-4}\). The signs are different, so the answer will be negative. So ...

Multiplying a decimal by a whole number uses the same method as multiplying two whole numbers. a) There were two digits after the decimal point in the question \((4\) and \(3)\), so you must have ...