BASIC ARITHMETIC 1,2,3,4,5,6,7,8,9 BASIC OPERATIONS • ADDITION + • SUBTRACTION • MULTIPLICATION x • DIVISION / Addition • 1+1=2 • 1+2=3 • 10+40=50 • 100+700=800 • 1000+3000=4000 Subtraction • 2-1=1 • 4-2=2 • 100+40=60 • 1000-700=300 • 5000+3000=2000 Multiplication • 1x1=1 • 2x2=4 • 4x2=8 • 10x4=40 • 10000x0=0 • 5000x0=0 Division • 1/1=1 • 3/0=undefined • 0/3=0 • 4/2=2 • 100/4=25 • 10000/0=0 • 5000/0=0 Numbers • Real Numbers • Whole Numbers • Rational Numbers • Irrational Numbers Numbers “Numbers is mathematical object used to count, measure, and label” ALWAYS REMEMBER MULTIPLICATION (BY 1) 1X1=1 1X2=2 1X3=3 1X4=4 1X5=5 ANY OBSERVATION? MULTIPLICATION (BY 2) 2X1=2 2X2=4 2X3=6 2X4=8 2X5=10 ANY OBSERVATION? MULTIPLICATION (BY 3) 3X1=3 3X2=6 3X3=9 3X4=12 3X5=15 ANY OBSERVATION? MATH TEACHES US THAT WE HAVE