KnowledgeMadeFun, home

Lesson · Grade 6 · Mathematics

Order of Operations: Brackets, Then Divide, Then Subtract

  • Grade 6
  • Mathematics
  • 1 min 5 s
  • British Columbia
  • BC6-MA-06

The video works out 30 − 18 ÷ (4 + 2) one step at a time, following a panel listing the order of operations: brackets first (4 + 2 = 6), then the division (18 ÷ 6 = 3, checked by 3 × 6 = 18), and the subtraction last (30 − 3 = 27). It shows that dividing comes before subtracting even though the minus sign is written first, and ends with the recap: brackets, then × and ÷, then + and −.

Concept: Order of operations with whole numbers and brackets

Anyone can watch two lessons on the website without an account. Signing in is free, no payment and no card, and opens three a day; Plus has no limit.

Loading

Share to Google Classroom

In one sentence

The question this lesson answers

What is 30 minus 18 divided by, in brackets, 4 plus 2?

When there is more than one operation, we follow the order of operations.

Transcript

What the lesson says

What is 30 minus 18 divided by, in brackets, 4 plus 2?

When there is more than one operation, we follow the order of operations.

First, work out what is inside the brackets.

Next, multiply and divide, from left to right.

Last, add and subtract, from left to right.

Start with the brackets, where 4 plus 2 is 6.

The minus sign comes first, but dividing comes before subtracting.

So next, 18 divided by 6 is 3.

Check it: 3 times 6 is 18.

Last, subtract. 30 minus 3 is 27.

So 30 minus 18 divided by, in brackets, 4 plus 2, equals 27.

Remember: brackets first, then multiply and divide, then add and subtract.

Curriculum

Where this fits

British Columbia, Grade 6

Mathematics, Number: order of operations with whole numbersBC6-MA-06

Previous: Division facts from multiplication factsNext: Prime and Composite Numbers: Count the Factors

The outcomes and strands follow the British Columbia curriculum.

Keep going

More on this topic