Chapter 1

Chapter 1

Improper fraction- Mixed number

Example:

 $\frac{15}{2\ }=7\ \frac{1}{2}$  

Multiple Choice

Change the improper fraction to a mixed number.

 $\frac{15}{4}$  

•  $4\ \frac{1}{4}$  

•  $3\ \frac{3}{15}$  

•  $3\ \frac{3}{4}$  

Mixed Number to Improper Fraction

 $3\ \frac{2}{5}\ =\frac{17}{5}$  

Multiply 5 x 3=15 +2= 17
Move your denominator over.

Multiple Choice

Change the mixed number to an improper fraction.

 $4\ \frac{2}{5}$  

• 20/5

• 22/5

• 22/4

• 2/20

Adding Rational numbers.

When adding two negative numbers, the answer will be a negative number. -4 + (-5)= -9 or

-4 - 5 = -9

Fill in the Blank

-4.0 + (-1.8)=

Fill in the Blank

-22 - 15=

Multiple Choice

-2.1 + (-3.5) =

• -5.6

• 5.6

• -1. 4

• 1.4

Fill in the Blank

The girl is dove 30 meters below sea level. Then she dove down another 12 meters. How far below sea level is the girl?

Adding negative numbers with different signs. Examples:

-10 + 4 = -6

6 - 8.25 = -2.25

1/2 + (-3/4)= -1/4

Fill in the Blank

-1 1/2 + 2 1/2

Fill in the Blank

4 - 7

Fill in the Blank

-3 + 4

Fill in the Blank

• 1 + (-25)

Subtracting Rational numbers

Examples:

-6 -2 = -8

-3 -3 = -6

1 -9= -8

-5 - (-4) = 1

Fill in the Blank

-12.5 - 6.2=

Fill in the Blank

-14 - 22 =

Fill in the Blank

65 - (-14)=

Fill in the Blank

A climber starts descending from 533 feet above sea level and keeps going until she reaches 10 feet below sea level. How many feet did she descend?

Multiplying and dividing Rational numbers--- Rules

pos x/ pos = pos 4 x 6 = 24

pos x/ neg= neg 4 x (-6)= -24

neg x/ pos = neg -4 x 6= -24

neg x/ neg= pos -4 x (-6)= 24

Fill in the Blank

-1 x 9=

Fill in the Blank

-20 (-5)

Fill in the Blank

8 (-10)

Fill in the Blank

4.5 x 5

Multiplying Fractions

Multiply numerator (top number)
Multiply denominator (bottom number)

 $\frac{4}{5}\times\frac{1}{3}=\ \frac{4}{15}$  

Fill in the Blank

 $5\ \left(-\frac{2}{11}\right)$  

Multiple Choice

 $-\frac{5}{7}\times\frac{2}{3}$  

•  $-\frac{15}{14}$  

•  $-\frac{10}{21}$  

•  $\frac{10}{21}$  

•  $\frac{7}{10}$  

14/7= 2

-14/7= -2

14/(-7)= -2

-14/(-7)= 2

Multiple Choice

-36/-9

• -4

• 4

Multiple Choice

-55/11

• -5

• 5

Multiple Choice

-45/-5

• 9

• -9

 $\frac{2}{5}\div-\ \frac{3}{5}$  =
 $\frac{2}{5}\ \times\ -\frac{5}{3}\ =\ -\frac{10}{15}=\ -\frac{2}{3}$  

Multiple Choice

 $\frac{2}{5}\div\ -\frac{3}{8}=$  

• 16/15

• -1 1/15

• -6/40

• -3/20

Fill in the Blank

-2 + 5 + 7 - 6 =

Fill in the Blank

5 (-3) + (-2)

Fill in the Blank

The price of one share of ABC Company declined a total of $45 in 5 days. How much did the price of one share decline, on average per day?

Fill in the Blank

Theo has $620 in her checking account. She writes a check for $ 95. Then she deposits $125. What his his checking account balance?