Question

some children compared how many thank-you notes they wrote last month.
writing thank-you notes
how many children wrote at least 2 thank-you notes?
□ children

Explanation:

Step1: Count for 2 notes

From the graph, the number of X's at 2 is 7.

Step2: Count for 3 notes

The number of X's at 3 is 3.

Step3: Sum the counts

Add the number of children who wrote 2 notes and 3 notes: $7 + 3 = 10$.

Answer:

10