Subtract numbers with decimals using the standard subtraction algorithm

Lesson

We can subtract numbers that include decimals in just the same way as we would subtract whole numbers. We just need to line up the numbers according to their place value.

Examples

question 1

Evaluate: $21.952-5.719$21.9525.719

Think: How do the place value columns line up?

Do$21.952-5.719=16.233$21.9525.719=16.233

We can also use this for questions that involve money, distances or any number that involves decimals.

Outcomes

NA5-3

Understand operations on fractions, decimals, percentages, and integers