Vocabulary numerical expression - a mathematical sentence consisting of numbers and operations

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# Vocabulary numerical expression - a mathematical sentence consisting of numbers and operations - PowerPoint PPT Presentation

Vocabulary numerical expression - a mathematical sentence consisting of numbers and operations evaluate - to find the value of an expression with one or more operations order of operations – a set of rules for evaluating an expression with one or more operations. Vocabulary

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Vocabulary

numerical expression- a mathematical sentence consisting of numbers and operations

evaluate- to find the value of an expression with one or more operations

order of operations– a set of rules for evaluating an expression with one or more operations

Vocabulary

variable- a symbol (like x or y) that is used in mathematical expressions to represent an unknown quantity

variable expression- a mathematical sentence consisting of numbers, variables and operations

Still UsingPEMDAS

Ex: 1 evaluate the expression when x = 8

7x + 15

Still UsingPEMDAS

Ex: 1evaluate the expression when x = 8

7x + 15 substitute

Still UsingPEMDAS

Ex: 1evaluate the expression when x = 8.

7x + 15 substitute

7(8) + 15

Still UsingPEMDAS

Ex: 2aevaluate the expression when x = 8 and y = 2.

7x + 15 substitute

7(8) + 15 multiply

Still UsingPEMDAS

Ex: 2aevaluate the expression when x = 8 and y = 2.

7x + 15 substitute

7(8) + 15 multiply

56 + 15

Still UsingPEMDAS

Ex: 1evaluate the expression when x = 8 and y = 2.

7x + 15 substitute

7(8) + 15 multiply

56 + 15 add

Still UsingPEMDAS

Ex: 1evaluate the expression when x = 8 and y = 2.

7x + 15 substitute

7(8) + 15 multiply

56 + 15 add

71

Still UsingPEMDAS

Ex: 1evaluate the expression when x = 8.

7x + 15 substitute

7(8) + 15 multiply

56 + 15 add

71

Ex: 2evaluate the expression when x = 4 and y = 2.

Still UsingPEMDAS

Ex: 1evaluate the expression when x = 8.

7x + 15 substitute

7(8) + 15 multiply

56 + 15 add

71

Ex: 2evaluate the expression when x = 4 and y = 2.

x ·(y + 3)

Still UsingPEMDAS

Ex: 1evaluate the expression when x = 8.

7x + 15 substitute

7(8) + 15 multiply

56 + 15 add

71

Ex: 2evaluate the expression when x = 4 and y = 2.

x ·(y + 3)substitute

Still UsingPEMDAS

Ex: 1evaluate the expression when x = 8.

7x + 15 substitute

7(8) + 15 multiply

56 + 15 add

71

Ex: 2evaluate the expression when x = 4 and y = 2.

x · (y + 3)substitute

4 · (2 + 3)

Still UsingPEMDAS

Ex: 1evaluate the expression when x = 8.

7x + 15 substitute

7(8) + 15 multiply

56 + 15 add

71

Ex: 2evaluate the expression when x = 4 and y = 2.

x · (y + 3)substitute

4 · (2 + 3) p(add)

Still UsingPEMDAS

Ex: 1evaluate the expression when x = 8.

7x + 15 substitute

7(8) + 15 multiply

56 + 15 add

71

Ex: 2evaluate the expression when x = 4 and y = 2.

x · (y + 3)substitute

4 · (2 + 3) p(add)

4 · 5

Still UsingPEMDAS

Ex: 1evaluate the expression when x = 8.

7x + 15 substitute

7(8) + 15 multiply

56 + 15 add

71

Ex: 2evaluate the expression when x = 4 and y = 2.

x · (y + 3)substitute

4 · (2 + 3) p(add)

4 · 5 multiply

Still UsingPEMDAS

Ex: 1evaluate the expression when x = 8.

7x + 15 substitute

7(8) + 15 multiply

56 + 15 add

71

Ex: 2evaluate the expression when x = 4 and y = 2.

x · (y + 3)substitute

4 · (2 + 3) p(add)

4 · 5 multiply

20

Still UsingPEMDAS

Ex: 3evaluate the expression when x = 4 and y = 9.

Still UsingPEMDAS

Ex: 3evaluate the expression when x =12 and y = 4

Still UsingPEMDAS

Ex: 3evaluate the expression when x =12 and y = 4

substitute

Still UsingPEMDAS

Ex: 3evaluate the expression when x =12 and y = 4

substitute

Still UsingPEMDAS

Ex: 3evaluate the expression when x =12 and y = 4

substitute

Still UsingPEMDAS

Ex: 3evaluate the expression when x =12 and y = 4

substitute

Still UsingPEMDAS

Ex: 3evaluate the expression when x =12 and y = 4

substitute

multiply

Still UsingPEMDAS

Ex: 3evaluate the expression when x =12 and y = 4

substitute

multiply

Still UsingPEMDAS

Ex: 3evaluate the expression when x =12 and y = 4

substitute

multiply

divide

Still UsingPEMDAS

Ex: 3evaluate the expression when x =12 and y = 4

substitute