Katy's 4 dogs eat a total of 16 dog biscuits every day. How many biscuits will they eat in 45 days?

Answer 1

Hi Sapphire!

Step One: You know the total number of biscuits the 4 dogs eat in one day...16.

Step Two: You know it is a total of 45 days that you will find the product (answer to a multiplication problem) for.

Step Three: decide if you need to add, subtract, multiply or divide. You know you are putting numbers together instead of taking anything away. Repeated addition is a longer version of multiplication, so multiplication will be the quickest way to get to your answer.

Step Four: Multiply!! 45

x 16

Multiply 6 times 5 and then 4.

A zero goes under that product to represent you have multiplied in the one's place.

Then, multiply 1 times 5 and 1 times 4. Here is what it should look like now.

45

x 16

270

+450 NOW ADD!

720

The 4 dogs will eat 720 biscuits in 45 days!

Answer 2

16*45=

10*45+6*40+6*5=

450 + 240+ 30=720

Brake it down.