# Introduction to Egyptian Mathematics 6 th Grade Math - PowerPoint PPT Presentation

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Introduction to Egyptian Mathematics 6 th Grade Math. A different way to look at Mathematics Ms. Buschbacher SPRING 2010. Do we all remember what the place value system is?. Place Value System. Each time you write a number, the number holds a certain place.

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Introduction to Egyptian Mathematics 6 th Grade Math

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## Introduction to Egyptian Mathematics6th Grade Math

A different way to look at Mathematics

Ms. Buschbacher

SPRING 2010

Do we all remember what the place value system is?

### Place Value System

• Each time you write a number, the number holds a certain place.

• Millions, Hundred-thousands, Ten-thousands, Thousands, Hundreds, Tens, Ones, Tenths, Hundreds, Thousandths, Ten-thousandths, Hundred-thousandths, Millionths.

• NOTICE: The endings of all the words.

• -nd’s will be BEFORE the decimal point.

• -th’s will be AFTER the decimal point.

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Ten-Thousands

Place

Tenths

Place

Thousands

Place

Tens

Place

Thousandths

Place

Hundredths

Place

Hundreds

Place

Ten-Thousands

Place

Ones

Place

A number will always have at least on of these places filled in.

Practice figuring out numbers place values.

### 243.76

• What are the place values of the numbers?

• 2 hundreds

• 4 tens

• 3 ones

• 7 tenths

• 6 hundreds

200 + 40 + 3 + 0.7 +.06 = 243.76

### 13817.723

• What are the place values of the numbers?

• 1 ten-thousands

• 3 thousands

• 8 hundreds

• 1 ten

• 7 ones

• 7 tenths

• 2 hundreds

• 3 thousands

10,000 + 3,000 + 800 + 10 +7 + 0.7 + 0.02 + 0.003 = 13817.723

The Egyptians used the place value system as well!

Instead of saying thousands, hundreds, and tenths, they used symbols.

The next slides explain what symbols represent what place values!

### The number one!

• The number one is distinguished by a single stroke

### This number is represents 10. This is a picture of 1 ten. It is a drawing of a hobble for cattle.

A hobble is a device around the legs of cattle to handicap but not completely prevent movement.

### The hundreds place is represented by a coil. This is a picture of 1 hundred.

• The coil is a series of connected spirals or concentric rings formed by gathering or winding. The picture is of a coil of rope.

The thousands place is represented by a drawing of a lotus plant. This picture is of 1 thousand.

### The ten thousandths place is represented by a finger. This symbol represents 1 10,000. Two of these symbols would be 20, 000.

Who’s finger do you think they would model for their number place system?

### The hundredth thousandths place is represented by a frog. This is a picture of 1 hundred thousand, or 100,000

Frogs were all over the ancient River Valley Civilizations.

The millionths place in the place value system is represented by a figure of a god with its arms raised above its head. This is a picture of 1 million.

What God or God’s were followed during this time period? Who would the Egyptians choose to represent the millionth place in their number system?

### What number is represented by:

REMEMBER:

This is the Ones place value

REMEMBER:

This is the Tens place value

We have:

3 tens

6 ones

30 + 6 = 36

### 51,614!

We have:

5 ten thousands

1 thousand

6 hundreds

1 ten

4 ones

50,000 +1000 +600 +10 +4 = 51,614