Solve the following equations
October 2, 2017
Solve the following equations: 9+3x6-4= 9 + 18 - 4 = 27 - 4 = 23
16 - 14 2 = 16 - 7 = 9
18 - 10 + 6 = 8 + 6= 14
35 - 16
86 - 9 x 9 =
3 + 9 x (15 - 10) =
4=
October 2, 2017
Order of Operations Where do I start?
October 2, 2017
You evaluate an expression by finding its value..."working the problem"
14
Jack and Jill were asked to evaluate the expression 3 + 4 x 2
and got different answers!
11
October 2, 2017
Jack explained how he got his answer....
3+4x2= 7 x 2 = 14
October 2, 2017
Jill explained how she got her answer....
3+4x2= 3 + 8 = 11
October 2, 2017
To make sure everyone gets the same results, mathematicians have agreed on a set of rules called the order of operations .
October 2, 2017
Order of Operations When you solve a math problem that uses more than one operation ( +, -, x, ÷ ), the answer depends on the order in which you do the operations. You must follow the right order to get the correct answer! To make sure everyone gets the same answer when solving a math problem, we use this order of operations: • Do the operation in Brackets first. • Next, Multiply and Divide, in order, from left to right. • Finally, Add and Subtract, in order, from left to right.
October 2, 2017
14
Jack and Jill were asked to evaluate the expression 3 + 4 x 2
So, who was right?
11
Solve the following equations: 9+3x6-4= 9 + 18 - 4 = 27 - 4 = 23
16 - 14 2 = 16 - 7 = 9
18 - 10 + 6 = 8 + 6= 14
35 - 16
86 - 9 x 9 =
3 + 9 x (15 - 10) =
4=
October 2, 2017
Order of Operations Where do I start?
October 2, 2017
You evaluate an expression by finding its value..."working the problem"
14
Jack and Jill were asked to evaluate the expression 3 + 4 x 2
and got different answers!
11
October 2, 2017
Jack explained how he got his answer....
3+4x2= 7 x 2 = 14
October 2, 2017
Jill explained how she got her answer....
3+4x2= 3 + 8 = 11
October 2, 2017
To make sure everyone gets the same results, mathematicians have agreed on a set of rules called the order of operations .
October 2, 2017
Order of Operations When you solve a math problem that uses more than one operation ( +, -, x, ÷ ), the answer depends on the order in which you do the operations. You must follow the right order to get the correct answer! To make sure everyone gets the same answer when solving a math problem, we use this order of operations: • Do the operation in Brackets first. • Next, Multiply and Divide, in order, from left to right. • Finally, Add and Subtract, in order, from left to right.
October 2, 2017
14
Jack and Jill were asked to evaluate the expression 3 + 4 x 2
So, who was right?
11
