Operations

Question 1

% OF

* 14% of 25

Answer 1

• Change the % to a decimal by sliding two spaces
• Multiply decimal to number (OF MEANS MULTIPLY)
• The answer is a whole number

Question 2

Multiply Decimals

* 3.4 x 5.12

Answer 2

• Ignore the decimal
• Multiply as normal
• Scoop the decimals in problem into the answer

Question 3

Greatest Common Factor GCF

* Find the GCF of 12 and 18

Answer 3

• Make a list of factors

- Find the greatest one in common

Question 4

Convert improper fraction to mixed number

* 13/5 to 2 3/5

Answer 4

• How many times does the denominator go into the numerator, that becomes whole #
• Multiply that number by denominator and subtract from the numerator, that becomes the new numerator
• Denominator doesn’t change

Question 5

Add/Subtract Unlike Fractions

* 1/8 + 1/3

Answer 5

• Multiply the denominators together to make a common denominator
• Cross multiply the old denominator with the opposite numerator
• Rewrite the equivalents
• Add or subtract

Question 6

Add/Subtract Like Fractions

* 1/4 + 2/4

Answer 6

• Add or subtract the numerator

- Leave the denominator the same

Question 7

Least Common Multiple LCM

* Find LCM of 4 and 6

Answer 7

• Make a list of multiples (getting bigger)

- Find the least (smallest) one in common

Question 8

Divide with Decimals in Divisor

* 56.3 ÷ 2.4

Answer 8

• Slide until the decimal is at the end of the divisor
• Slide the same number of spaces in the dividend
• Raise to the roof then solve

Question 9

Multiply Fractions

* 1/3 x 2/5

Answer 9

• Multiply the numerator

- Multiply the denominator

Question 10

Simplifying Fractions (Lowest Terms)
* Simplify 15/20

Answer 10

• Find the GCF between the numerator and denominator

- Divide the numerator and denominator by that number

Question 11

% IS

* 13% is 20, what is 100%?

Answer 11

• Change the percent to a decimal sliding
• Swap the number with the decimal
• Divide the number by the decimal

Question 12

Change a fraction to a decimal

Answer 12

• Divide the numerator by the denominator

Question 13

Dividing fractions

*ex: 3/5 ÷ 2/3

Answer 13

• Convert any mixed numbers to improper fractions
• Keep the first fraction
• Change division to multiplication
• Flip the last fraction
• Multiply

Question 14

Find Equivalent Fractions or Ratios

Answer 14

• If ratio, turn into a fraction
• Ask what we can multiply to turn one fraction into the other
• Check if same number was multiplied on top and bottom
• If same number was used, it is equivalent

Question 15

Converting a mixed number to improper fraction

* 2 1/3 into 7/3

Answer 15

• Multiply down (multiply whole number to denominator)
• add up (add that to the numerator)
• Denominator stays the same

Question 16

Change a percent to a fraction

Answer 16

• Add a denominator of 100

- Simplify

Question 17

Add/subtract decimals

Answer 17

• Line it up
• Drop it down
• Sove

Question 18

Solving equations with variables

* 4 + b = 10

Answer 18

• Identify the operation
• Use the OPPOSITE to get the variable by itself
• Do the same to the other side of the equation

Question 19

Perimeter

Answer 19

Adding all the sides

Question 20

Area of Rectangle and Parallelogram

Answer 20

A = bh (base times height)

Question 21

Area of Triangle

Answer 21

A = 1/2bh or (bh)÷2

Question 22

Area of a Trapezoid

Answer 22

A= (b+b)h(1/2) or ((b=b)h)÷2

Question 23

Area of a Rhombus

Answer 23

A = dd(1/2) or (dd) ÷ 2

Question 24

Area of a Compound Polygon

Answer 24

Break up into simple polygons
Find the area of each
Add together