Integers

who invented integers

• There were to inventors to give credit to
• The inventors were Greeks and Romans
• One of the inventors was Carl Friedrich Gauss
• The second inventor was Arbermouth Holst
• They were both German Mathmaticians

Where were integers discovered

• Integers were first mentioned in China
• They were mentioned in China in 200 BC
• They were later mentioned in India 
• They were mentioned in India in 620-630AD

When integers where made

• Integers where invented in 1563
• Integers were stated in the 7th century
• In 1758 a dissertation on the use of the negative sign in algebra was made 
• The dissertation was made by Francis Maseres

How are integers used

• They are used to tell the temperature 
• For example "On Sunday it will be -25 degrees"
• They are also used to tell the height of a building up and downward
• They are used to tell how much money you have in the bank weather - or +
• Negative integers can represent debits and + integers represent credits 

Why were integers invented

• They were invented for many reasons 
• Chinese and Indians use to work on numbers but always had 
• problems with negative solutions
• Diophantus in the third century A.D. called the equation 4x + 20=0--
• an absurd equation because it had the negative solution

Integer examples

• -3-5=-8
• -4(-8)=32
• (-4)(-12)=48
• -15-6=-21
• -2(3)=-6

integers quiz

• -3(9)=?
• -4+-8=?
• -7-8=?
• -15+6=?
• 3-5=?

the end