# 15

## Clues

Ten plus five equals the sum of fifteen.

Twenty subtract five equals the difference of fifteen.

Three multiplied by five equals the product of fifteen.

Thirty divided by two equals the quotient of fifteen.

1x15

3x5

## Multiples

15; 30; 45; 60; 75; 90; 105; 120; 135; 150

## It's used in daily life!

• My step sister is 15.
• The number 15 could also be used as a price like \$15.
• It could be a number for a jersey.

(3x12-6)/2 =15

4x5-5 =15

5x9/3 =15

## Historical Date

In 1503 Leonardo da Vinci painted the " La Gioconda" or better know as the "Mona Lisa."

## Word Problem

Mia has two guest coming over for a slumber party. She wants to serve herself and her two guest five cookies each. How many cookies will she have to buy?

## Why 15?

I chose 15 because when i was little it sounded "amazing" when I counted really fast. Fifteen has been my favorite number since I was able to count. In this project i learned the da Vinci painted the famous french painting, The Mona Lisa in the 1500's.