10 3. What is the cultural significance of this number, and in which cultures? 4. What interesting...

4
10 3. What is the cultural significance of this number, and in which cultures? 4. What interesting arithmetic properties does this number possess? 7. What are the interesting geometric properties of this Steve Elliott

Transcript of 10 3. What is the cultural significance of this number, and in which cultures? 4. What interesting...

Page 1: 10 3. What is the cultural significance of this number, and in which cultures? 4. What interesting arithmetic properties does this number possess? 7. What.

10

3. What is the cultural significance of this number, and in which cultures?

4. What interesting arithmetic properties does this number possess?

7. What are the interesting geometric properties of this number?

Steve Elliott

Page 2: 10 3. What is the cultural significance of this number, and in which cultures? 4. What interesting arithmetic properties does this number possess? 7. What.

3. What is the cultural significance of this number, and in which cultures?

10 is the number of commandments in the Old Testament of the Bible, and thus plays a role in Judeo-Christian Culture

In the earliest Roman calendars, there were 10 months

In US culture, we have Top 10 lists and the FBI’s Ten Most Wanted list

Page 3: 10 3. What is the cultural significance of this number, and in which cultures? 4. What interesting arithmetic properties does this number possess? 7. What.

4. What interesting arithmetic properties does this number possess?

• 10 is the basis of our positional notation for numbers

321 = 3 x 102 + 2 x 101 + 1 x 100

• Division by 10 moves a decimal point one position to the left in the dividend 456 / 10 = 45.6

• Multiplication by 10 moves a decimal point one position to the right

456 x 10 = 4560

Page 4: 10 3. What is the cultural significance of this number, and in which cultures? 4. What interesting arithmetic properties does this number possess? 7. What.

• 10 is the first triangular number with a center

1

3

6

10

7. What are the interesting geometric properties of this number?