GKT101: General Knowledge for Teachers – Math

1. A statistician for a chain of department stores created the following stem-and-leaf plot showing the number of pairs of glasses at each of the stores:

$\begin{array}{|l|lllllll}0 & 9 & & & & & \\1 & 3 & 6 & 6 & 8 & & \\2 & 1 & 2 & 3 & 5 & 6 & 9 \\3 & 0 & & & & & \\4 & 1 & 2 & 3 & 3 & 5 & 7\end{array}$

Key: $4 \mid 1=41$ pairs of glasses

How many department stores have fewer than 38 pairs of glasses?

______ department stores

2. A zookeeper published the following stem-and-leaf plot showing the number of bears at each major zoo in the country:

$\begin{array}{|l|llllll}0 & & & & & & \\1 & 8 & 8 & & & & \\2 & 1 & 3 & 6 & 6 & 7 & 7 \\3 & 1 & 7 & & & & \\4 & 1 & 4 & 5 & 7 & & \\5 & 0 & 3 & & & &\end{array}$

Key: $4 \mid 1=41$ bears

How many zoos have exactly 16 bears?

_____ zoos

3. A zookeeper published the following stem-and-leaf plot showing the number of lizards at each major zoo in the country:

$\begin{aligned}&\left|\begin{array}{c|ccccc}0 \\1 \\2 & 0 & 6 & 8 & 8 & 8 \\3 & 0 & 2 & 6 & 6 & 7 \\4 & 1 & 2 & 6 & 6 & \\5 & & & & & \\6\end{array}\right| \\&\text { Key: } 4 \mid 1=41 \text { lizards }\end{aligned}$

What was the smallest number of lizards at any one zoo?

_____ lizards

4. The regional manager of a chain of department stores created the following stem-and-leaf plot showing the number of pairs of boots at each of the stores:

$\begin{array}{l|lll}0 & & & \\1 & 7 & 8 & \\2 & 0 & 5 & 8 \\3 & 4 & 4 & 7 \\4 & 0 & & \\5 & & & \\6 & & &\end{array}$

Key: $1 \mid 7=17$ pairs of boots

How many department stores have more than 60 pairs of boots?

_____ department stores