Calculator Strategies STO

STO Given 

STO Answer

STO 5 → x , 6 → y , 7 → z

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STO Given 

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When we have an algebraic expression and asked to evaluate or simplify given the values.

Note: Make sure you multiply if you see two letters in example (x•y) next to each others or you see parenthesis in example x•(c+6).

We use it to find:

to Evaluate an algebraic expression if you are given the values of the letters , example x=-1 , and y=-2 , Evaluate 2x-5y ?

STO-Given STEPS :

1- Ctrl – N ( If it asks to if you want to save click No )

2- Add Calculator 1

3- Letter , Ctrl VAR , Number ( in example 5 → x ) Enter

4- Type the expression the way it looks – exactly

Example 1:

 

 

 

 

Solution 1:

 

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STO Answer

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We use it when we have an equations with answers in a multiple choices.

We use it to find:

Which answer is the true answer for an equation linear or quadratic.

STO Answer STEPS:

1- Ctrl N

2- Add Calculator:1

3- start with the answer choices one at a time , number Ctrl VAR letter

4- type the equation the way it appears in the question

5- if it gives you TRUE , STOP. If it gives you false , store the next answer choice and so on until you get the right answer ( True )

Note: When you have ± , it means it two numbers in example ±2 means 2 and -2.

Example 1:

 

 

 

 

 

 

 

 

 

Solution 1:

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STO 5 → x , 6 → y , 7 → z

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When we have an algebraic expression with letters and numbers , no equal sign !

We use it to find:

Which is equivalent expression to another expression.

 

STO 5 → x , 6 → y , 7 → z STEPS:

1- Ctrl N

2- Add a Calculator

3- if you have only one letter such as x , you type 5 → x , if you have another letter you assign number 6 , and so on.

4- find the value of the expression and start typing the answer choices and whichever equivalent is the answer.

Example 1:

 

 

 

 

 

 

 

 

 

Solution 1:

Example 2: ( More than one letter )

Solution 2:

 

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