OnRamp Unit 1 Review

In a collection of coins, the number of nickels is $\frac{1}{5}$  the number of dimes.  "N" = Nickels & "D" equals Dimes. What is the correct formula for the relationship between nickels & dimes? 

• N = D - 5

• N = 5D

•  $\frac{5}{D}$  = N

•  $\frac{D}{5}$   = N

In a collection of coins, the number of nickels is $\frac{1}{5}$ the number of dimes. "N" = Nickels & "D" equals dimes. What is the correct formula for the relationship between nickels & dimes?

• N = D - 5

• N = 5D

• $\frac{5}{D}$ = N

• $\frac{1}{5}D$ = N

 $7\cdot\left(2+4\right)$  

• 42

• 56

• 48

• 46

 $8\left(3+4\right)$  

• 48

• 56

• 48

• 66

Which one of these is always true for any two different numbers a & b?

• $a\div b=b\div a$

• $a\cdot b=b\cdot a$

• $a-b\ =b-a$

• $\frac{1}{a}\cdot b\ =\frac{1}{b}a$

A can of soda costs $1.50 and a piece of beef jerky costs $2.50. Which expression shows the total price of c cans of pop and p pieces of beef jerky?

• c + p

• 4.00(c + p)

• 1.50c + 2.50p

• 4.00cp

• $2.50c\cdot1.50p$

The height of a rectangle is 5 cm and its base is 10 cm. 

The Area of a rectangle is A = bh.

The perimeter of a rectangle is P = 2b + 2h.

•  $A=50\ cm^2\ \ \&\ \ P=30\ cm$  

•  $A=\ 30\ cm\ \ \&\ \ P=\ 50\ cm^2$  

•  $A=50\ cm^2\ \&\ P=15\ cm$  

•  $A=25\ cm^2\ \ \&\ P=30\ cm$  

•  $A=25\ cm^2\ \ \&\ P=15\ cm$  

Duane has $16 dollars to spend on candy bars. Each candy bar costs $0.80. What mathematical operation should Duane perform to find out how many candy bars he can buy?

• Divide 0.80 by 16

• Subtract 0.80 from 16

• Divide 16 by 0.80

• Multiply 16 by 0.80

What's another way of writing $\frac{2}{3}\left(9\ +x\right)$  ?

•  $\frac{9+2x}{4}$  

•  $9+\frac{2}{3}x$  

• 6 + 2x

•  $\frac{2}{3}\left(9\right)\ +\frac{2}{3}\left(x\right)$  

x(y+6)

Simplify by multiplying with the distributive property.

• xy +6x

• xy + (x +6)

• xy +6

• y + 6x