# Multiplication from the Ages

## Presentation on theme: "Multiplication from the Ages"— Presentation transcript:

Multiplication from the Ages
Mrs. Fox

Multiplication has been dated back to 2300 BC in many places around the globe from Mesopotamia to Europe, Asia and the United States Different methods of multiplication have been used through the centuries Some are common to us and some are bizarre Some have interesting trivia to go with them Let’s take a look !

Invented the Abacus 2300 BC Mesopotamia add subtract multiply divide

Old Babylonian Period 2000 BC Archeologist unearthed stone tablets much like our current multiplication tables

Translation – trajectory of a cow’s urine ?????
Gomutrika Translation – trajectory of a cow’s urine ????? 11th Century Indian 4 5 2 3 X 452 1 X 452 5 X 452 4 5 2 +

Multiplication with fingers Not really multiplication
Rome Multiplication with fingers Not really multiplication

Ancient Egyptian Multiplication
14 X 23 Double this digit 14 28 56 112 224 Halve this digit 23 11 5 2 1 Odd? Yes yes Add the “yes” doubles 14 28 56 +224 322

European Leonardo of Pisa
Lattice Jalousia Iron Grid European Leonardo of Pisa Gelosia Italian men would place this grid over their windows to keep strangers from staring at their wives 32 X 15 = 480 1 5 3 2 1 1 4 5 8

Can you figure this one out?
Spanish 1500’s 875x978=855750 875/978 8x9 726460 8x7 5695 8x8 6354 45 7x9 43 7x7 855750 7x8 5x9 Can you figure this one out? 5x7 5x8

Napier’s Bones England 1600’s Scottsman with way too much time on his hands makes one of the first know calculators from animal bones

Russian Peasant Multiplication The left side is the answer
9 X 8 Double this numeral Halve this numeral 9 18 36 72 8 4 2 1 When the right side = 1 The left side is the answer 72

Traditional 23 X 43 20th century 69 92 989 + Multiply 23 X 3

Today’s modern miracle
Calculator Today’s modern miracle Push buttons

References www.noisefactory.co.uk/mathshistory www.multiplication.com

Pa Math Standards 2.1.4.E – Apply factors and multiples to represent larger numbers in various ways 2.2 – Computation and Estimation M4.A.2 – Understanding the meaning of operations, use operations and understand how they relate to each other