Midterm Review Units 1-5 Math 7

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​Example: ​ 3/4 , 1.25x 10^2, .95

​step 1) convert all numbers to decimals (top/bottom) in Desmos, remove% and move decimals two places left

step 2) rewrite the numbers, add zeros and decimals if appropriate​

step 3) write top to bottom ​

​ 3/4= .75 , 1.25 x 10^2= 125, .95​

125

0.95

0.75​

​step 1) convert all numbers to decimals

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for fractions (top divided by bottom) in Desmos, Example (1/2 is .50)

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For percent- remove % and move decimals two places left

Example ( 30% is .30)​

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step 2) rewrite the numbers, add zeros and decimals if appropriate​

Example 50% is also 0.50​

step 3) write top to bottom ​

​ 3/4= .75 , 1.25 x 10^2= 125, .95​

125

0.95

0.75​

Evaluating Equations Review

​Substitute the variable in Desmos

Example when p = -4 evaluate the equation type in Desmos 8p -1 on the first line

p= -4 on the second line​

​8(-4) -1 = -33​

make sure you type it in correctly

Unit 3: Inequalities

Reviewing skills

Step 1: draw a line down the inequality sign >, <,

​Step 2) ​move the number furthest away from the variable first by opposite operation hint *** (not the number by itself)

Step 3) ​if dividing or multiplying by a negative you flip the inequality

always put your variable on the left if written backwards example 3 < b rewrite to b > 3

Proportional goes through (0,0) the center of the graph, the equation does not have a plus or minus (y= 2x) you have to do y over x to find the slope

Additive- does not go through (0,0) but does have a plus or minus in the equation y= x + 2

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