Saturday, August 3, 2013

Order of Operations

Welcome back for our new term!!! Hope you had a great holiday.
 
This week we've begun studying the Order of Operations. Why is it important? Because if we don't follow the order we may not come to the right solution.
 
There are two ways to help you remember, choose the one you prefer:
 

Please excuse my dear Aunt Sally
   or
                                                PEMDAS
 
 
P - parentheses
E - exponents
M - multiplication
D - division
A - addition
S- subtraction
 
 
Let's give it a try. Solve:
 
 
2 - 2 x 2 + 2 = ?
 
1st: 2 x 2 = 4
 
2nd: 2 - 4 + 2 = 0
 
The answer is 0.
 
 
Here are some more. Post your answers!!!
 
a) 9 - (2 x 3) + 15 : 3 = __________
 
b) 8 x (4 + 3) - 46 = __________
 
c) 12 : 3 - 3 + 2 x 6 = __________

13 comments:

  1. a) 8
    b) 10
    c) 13

    bye bye hedra marques.

    ReplyDelete
  2. a)10
    b)8
    c)13



    Pedro Bezerra

    ReplyDelete
  3. Answers: :)
    a) 8
    b) 10
    c) 13



    Julia Brusco :)

    ReplyDelete
  4. a) 8
    b) 10
    c) 13
    leonardo s

    ReplyDelete
  5. a)11
    b)2
    c)13




    victor a.

    ReplyDelete
  6. By Lucas Moura
    a) 9 - (2 x 3) + 15 : 3 = 6

    b) 8 x (4 + 3) - 46 = 10

    c) 12 : 3 - 3 + 2 x 6 = 66

    ReplyDelete
  7. A)8
    B)10
    C)13
    Danielly Ramos
    number 4

    ReplyDelete
  8. A)8
    b)10
    c)13
    Danielly

    ReplyDelete
  9. A) 8
    B) 10
    C) 13
    Hedra Marques

    ReplyDelete
  10. A) 8
    B) 10
    C) 13

    Gabriela Bicalho ❤❤❤

    ReplyDelete