Order of Operations in Grade V

Hi Children! While doing mathematical operations and to get the correct answer for operations on rational numbers we need to learn proper order of the operators. In order to learn order of operations in math, we need to remember BODMAS taken from CBSE, where
B stands for Bracket
O stands for Of operator
D stands for Division
M stands for Multiplication
A stands for Addition
S stands for subtraction.
This means that first all the operations in the brackets are to be performed followed by operator "of", and then we check if there exist division operation, we perform division. Then we check the expression for multiplication, if there is a multiplication operator, and then we multiply. Then we check for addition in the expression and add the terms followed by subtraction to be done at the last.
Let us understand it more clearly through an example:
 Solve 20 - 2 * 10/2 + (6 - 2)
To solve the above expression we first look at the braces and solve as follows:
 (6 - 2) = 4, so the given expression becomes as:
   = 20 - 2 * 10/2 + 4
 Now we take into consideration the operation of division and perform 10 / 2
 We get 10 / 2 = 5; now put this value in the above expression we get:
   20 - 2 * 5 + 4
 Now next comes the turn of multiplication operator, we get:
  2 * 5 = 10,
 Similarly now we replace this value in the above expression, we get:
 = 20 - 10 + 4
 Now we add 4 to -10 and get 10 + 4 = -6
 = 20 -6
 = 14 Ans.
In this way various mathematical expressions can be solved by ordering operations. 

 

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