비·비율·비례식 단원 종합

F.1Write each ratio with a colon, in the order the words name the groups.

1. 1
   Blue to red: 
2. 2
   Green to blue: 

F.2Write each ratio in simplest form.

1. 3
   Simplest form: $49:63$ 
2. 4
   Simplest form: $\frac{44}{24}$ 

F.3Fill in each box.

1. 5
   $22:18=$ $\boxed{}:9$
2. 6
   $3:4=$ $15:\boxed{}$

F.4Fill in the boxes so every column shows the same ratio.

1. 7
   $\begin{array}{lcccc}\text{Laps}& 4& 16& 28& \\ \text{Minutes}& 3& & & 24\end{array}$
2. 8
   $\begin{array}{lcccc}\text{Hours}& 1& & & 8\\ \text{Miles}& 5& 25& 30& \end{array}$

F.5Find each unit rate.

1. 9
   $64$ words in 2 minutes. Find the unit rate.
2. 10
   $116$ pages in 4 days. Find the unit rate.

F.6Answer each question. Write ratios in simplest form.

1. 11
   $27:3=$ $\boxed{}:1$
2. 12
   $8:7=$ $\boxed{}:28$

F.7Do the ratios form a proportion? Write yes or no.

1. 13
   $\frac{4}{14}\stackrel{?}{=}\frac{7}{21}$ 
2. 14
   $\frac{40}{25}\stackrel{?}{=}\frac{9}{5}$ 

F.8Solve each proportion.

1. 15
   $\frac{42}{30}=\frac{y}{5}$
2. 16
   $\frac{y}{21}=\frac{80}{24}$

F.9Use the scale to answer each question.

1. 17
   On a blueprint, $1$ inch represents $5$ feet. A room is $7.25$ inches long on the blueprint. How long is the real room?
2. 18
   In a model, $1$ centimeter represents $3$ meters. A model building is $7.25$ centimeters tall. How tall is the real building?

F.1Write Ratios

1. 1$5:1$
2. 2$1:4$

F.2Simplify Ratios

1. 3$7:9$
2. 4$\frac{11}{6}$

F.3Equivalent Ratios

1. 511
2. 620

F.4Ratio Tables

1. 7$32,12,21$
2. 8$5,6,40$

F.5Unit Rates

1. 932 words per minute
2. 1029 pages per day

F.6Ratios & Unit Rates

1. 119
2. 1232

F.7Do the Ratios Form a Proportion?

1. 13no
2. 14no

F.8Solve Proportions

1. 15$y=7$
2. 16$y=70$

F.9Scale Drawings

1. 1736.25 feet
2. 1821.75 meters