copy and pasting homework, explain the trouble you’re having

Question

Harriet counts 15 big boxes and 12 small boxes of notebooks. Each large box contains 189 notebooks, and each small box contains 79 notebooks. Estimate the total number of notebooks. Is your estimate an overestimate or an underestimate? Explain why it is better to have an overestimate than an underestimate.

Answer 1

15 big boxes with 189 notebooks each: 20 * 200 = 4,000

12 small boxes with 79 notebooks each: 10 * 80 = 800

4,000 + 800 = 4,800

There are approximately 4,800 notebooks, this is an overestimate as I rounded up.