Big Idea
Multiplication is repeated equal groups; division splits a total into equal groups or finds group size.
Multiplication and Division
Use times tables, factors, multiples, arrays, and division facts.
Understand it first
Equal groups
6 x 4 means 6 groups of 4, or 4 groups of 6.
Factors
Factors multiply together to make a number.
Division check
A division answer can be checked by multiplying back.
Method Ladder
Use this same ladder every time you meet this topic.
- Identify the equal group size and number of groups.
- Use known times tables or break the calculation into parts.
- For division, ask what multiplication fact matches it.
- Check by reversing the operation.
Worked example: Calculate 18 x 7
- Break 18 into 10 and 8.
- 10 x 7 = 70.
- 8 x 7 = 56.
- 70 + 56 = 126.
Fix It Lab
Read these before the quiz. They are the traps that lose marks.
- Common mistakeMixing up factors and multiples.
- Common mistakeForgetting remainders in division.
- Common mistakeNot checking division by multiplying back.
Top-mark challenge
Open challenge
A theatre has 18 rows with 24 seats in each row. How many seats are there?
Write full working and one sentence explaining the method.
10-question unlock quiz
The quiz is now on separate pages. You answer one question, then the next question opens. Finish Question 10 to complete this mission.
Start Question 1