SCA #1 Review

Percents Review

Percent

• Percent means out of 100

• Compares part to whole

• Percents can be larger than 100 or smaller than 1, but they always compare a number to 100

Converting Percents

• Change a percent to a fraction by putting the fraction over 100

• Change a percent to a decimal by moving the decimal point two points to the left

• 
  

Multiple Choice

Make the percent to decimal.

7%

• .007

• 0.07

• 7

• 70

Multiple Choice

Which fraction is equivalent to the following percentage?

39%

• 39/10

• 39/100

• 39/1000

• None of the above

Multiple Choice

Make the percent to decimal.

142%

• 1.42

• 14.2

• 142.

• 0.142

Percents, Decimals and Fractions

• Change a fraction to a percent by changing the denominator to 100 or dividing numerator by denominator

• Change a decimal to a percent by moving the decimal point two points to the right.

Multiple Choice

Write 3/5 as a percent.

• 3%

• 30%

• 5%

• 60%

​WHAT ARE RATIONAL NUMBERS?

​

​

​HOW WE CAN IDENTIFY RATIONAL NUMBERS?

​RATIONAL NUMBERS

​INTEGERS

-2 , -697 ,-18/2​ , 55 , 29

​WHOLE

NUMBERS

0,1,2,3,4,5,6,......​

​NATURAL NUMBERS

1,2,6,3,8,....​

Multiple Choice

What are rational numbers?

• positive and negative whole numbers

• any number written as a fraction, decimal, and all integers

• counting numbers including zero

Multiple Choice

What are integers?

• any number written as a fraction, decimal, and includes all integers

• counting numbers including zero

• positive and negative whole numbers

Multiple Choice

• -1.7

• -8

• $$\frac{2}{3}$$

• 10

Multiple Choice

If both signs are positive, the answer will be positive.

• true

• false

Multiple Choice

If both signs are negative, the answer will be positive.

• true

• false

Multiple Choice

At the bakery they started with 170 cupcakes in the morning, By the next day the amount of cupcakes decreased by -40. How many cupcakes does the bakery have now?

• -130

• -210

• 210

• 130

Multiple Choice

• 7
• 5
• -7
• -5

Multiple Choice

Use the counters to find the sum of the integers. 

• 17
• -2
• -1
• -17

Multiple Choice

(-7) - 3

• 10

• (-10)

• 6

• 1

• 4

Multiple Choice

How would you rewrite -10 - 5?

• 10 + (-5)
• -10 + 5
• -10 + (-5)
• 10 + 5 

Poll

How do you feel about Adding and Subtracting Integers?

• I will never get this right

• With practice I can get better

• I am getting this,

• I am an expert

Multiple Choice

Divide -20/10

• 10

• 2

• -2

• -10

Multiple Choice

Divide -12/-2

• 6

• -6

• 2

• -4

Multiple Choice

Multiply -3 x (-5)

• -8

• -15

• 15

• 3

​

​

Multiple Choice

Evaluate:

$$\left(3\right)\left(-2\right)+7$$  

• 1

• 13

• -13

• -27

Multiple Choice

Evaluate:

$$-7+4-8$$  

• -11

• -3

• -19

• 11

Multiple Choice

$$12\div\left(-2\right)\cdot6$$  

• 36

• 0

• -36

• -1

Open Ended

Of all of these topics and examples, what do you think is your area/topic of strength?

Open Ended

Of all of these topics and examples, what area/topic do you think you need the most improvement on?