Question

Hi I'm the mom I would like to see if you can help me with this

Answer 1

1) To calculate how many pictures there are on the red photo album, you have to multiply the number of pictures per page by the number of pages on the album, so

You can split "15" into two numbers 10 and 5 and write the product as follows:

`9(10+5)=135`

And distribute the multiplication, i.e. multiply each number inside the parentheses by 9:

`(9\cdot10)+(9\cdot5)=135`

As you can see the result is the same for all three forms because they express the same calculation.

The first option can be used to calculate the number of pictures in the red album.

To calculate the number of pictures in the blue photo album, you have to multiply the number of pictures per page by the number of pages in the album, so

`\text{Blue}=8\cdot16=128`

As before, you can split "16" into two numbers, 10 and 6, and write the product as follows:

`8(10+6)=128`

You can also distribute the multiplication and write the calculation as follows:

`(8\cdot10)+(8\cdot6)=128`

The second expression can be used to calculate the number of pictures in the blue album.