Lesson
Are you ready?
Can you write a repeated addition as a multiplication number sentence?
Examples
Example 1
Write this addition as a multiplication. 3+3+3+3+3+3
Worked Solution
Idea summary
We can rewrite the addition as a multiplication using: \text{Number of groups}\times\text{Amount in each group}
Repeated addition
Let's use what we know about writing repeated addition as multiplication number sentences and use it to solve questions as well.
Examples
Example 2
Answer the following:
a
Write this addition as a multiplication:\,\, 4+4+4+4+4
Worked Solution
b
Find the value of 5 \times 4.
Worked Solution
Idea summary
If we are adding groups of the same size, we can also write it as a multiplication:
\text{Number of groups}\times\text{Amount in each group}
To find the answer we can use skip counting or a multiplication table.