Maths

Abundant Number What is an abundant number? An abundant number is a positive number that is less than its sum of proper divisors. For example, 12 is abundant because the sum of 1+2+3+4+6=16 exceeds 12 itself. The first 28 abundant number are as follows: 12, 18, 20, 24, 30, 36, 40, 42, 48, 54, 56, 60, […]

Absolute Value What is an absolute value? An absolute value of x or -x is just simply the number ignoring the minus sign. For example, the number -2 equals the absolute value 2. As shown in the picture below. Definition So the Absolute Value is the non-negative value of the number. |x| is positive |-x|

Abscissa Abscissa is a term to describe the horizontal coordinate “(x)” value in paired coordinates used in the Cartesian coordinate system. Ordered pair The Abscissa is always the first term in an ordered pair. Cartesian On the image below the Abscissa is the red line (x axis) Related  Ordinate Explained Click here

Abacus An abacus is an ancient device with beads or counters on a frame. The device is used for counting and calculating. The abacus may still be used in your schools today for education. Beads are moved and counted according to value. In our example below we have an abacus that displays 351. The abacus