Saturday, 10 December 2011

SUBTRACTION

a) Subtraction means:
  1. The Process of finding the difference between two numbers.
  2. To find the difference between two numbers by taking one away from the other.
  3. For example: Subtracting 4 from 9 leaves 5. ( 9 - 4 = 5 )
b) Other words of 'Subtraction':
     1.  Minus
     2.  Subtract
     3.  Take away
     4.  Less
c) Subtraction without regrouping
  1.  Subtract a 1-digit number from a 2-digit number
  2. Subtract a 2-digit number from a 2-digit number

  3. Subtract a 1-digit number from a 3-digit number
  4. Subtract a 2-digit number from a 3-digit number
  5. Subtract a 3-digit number from a 3-digit number

ADDITION

a) Addition means:
  1. The Process of finding the sum of two or more numbers.
  2. To calculate the total of two or more numbers.
  3. For example: 3 + 4 = 7
  4. The total is called the sum of the numbers added.
b) Other words of 'Addition':
  1. Sum
  2. Add
  3. Altogether
  4. Total
  5. Plus
  6. More
c) Adding two numbers without regrouping
  1. Add a 2-digit number and a 1-digit number
  2. Add a 3-digit number and a 1-digit number
  3. Add a 3-digit number and a 2-digit number
  4. Add a two 3-digit numbers