Question

In 1863, President Abraham Lincoln gave his famous Gettysburg Address. It starts, “Four score and seven years ago....” Four score and seven is equal to 87. How many years are in a score? What year was President Lincoln referring to?

Answer 1

Part 1: The simplest way to solve this I think is to set an equation. 4 score is 4x and 7 is +7. So 4x+7=87. Now simply solve.

4x+7=87
-7. -7
4x=80
/4. /4
X=20

---20 years are in a score---

Part 2: start at the year he said it, and go back 87 years. 1863-87=1776.

---he was referring to 1776---

Hope that helped!!