Question

clayton counted the number of desks in each classroom at his school.
desks per classroom
stem | leaf
1 | 1 1 9
2 | 0 1 2 5
3 | 4 5 5 6 7 7 8
4 | 0 0 1 2 3 3 3 6 9
how many classrooms have at least 20 desks but fewer than 23 desks?
□ classrooms

Explanation:

Step1: Identify relevant stem

We need desks ≥20 and <23. So stem is 2 (since 20 - 22 are in stem 2).

Step2: Count leaves for stem 2

Leaves for stem 2 are 0,1,2,5. We need leaves corresponding to 20,21,22 (i.e., leaves 0,1,2). So count these leaves: 0,1,2 → 3 leaves.

Answer:

3