Multiplication looks at equally sized groups. Can you solve this problem?
Find the value of 3\times 9.
We can think of 3 \times 9 as 3 groups of 9 like in the image below that has 3 groups of 9 squares:
The above image has 27 squares in total.
Multiplying by three is the same as tripling and can be thought of as the total of three equally sized groups.
Let's look at how to multiply numbers by 6.
Find the value of 6\times3.
We can think of 6\times 3 as 6 groups of 3 just like in the image below that has 6 groups of 3 squares:
The above image has 18 squares in total.
6 \times 3 = 18
We can also multiply the number by 3 then double the answer:
You can use a doubling strategy to multiply a number by 6. Start by multiplying the number by 3, then double the answer.
uses mental and informal written strategies for multiplication and division