This document provides examples and practice problems for addition and subtraction word problems. It begins with notes defining key terms like increase, total, decrease, difference, and more/less than. It then gives 4 examples of word problems involving adding and subtracting amounts to find a missing value. The examples include finding points scored in the second half of a game, calculating money spent at a store, determining elevation gain from a trailhead to a summit, and figuring out the year someone was born based on their age in a given year. It concludes by posing 3 additional word problems for students to practice solving.

1. Lesson 3
Objective: The student will
perform + and – word
problems.

2. Notes
+ increase, total
- decrease, difference, more/less than

3. Example 1
 In the first half of the game, Joe scored 12
points. In the whole game, he scored 27
points. How many points did Joe score in
the second half?
12 + p = 27

4. Example 2
 Jayda went to the store with a twenty
dollar bill. She bought a loaf of bread
and a half-gallon of milk. The clerk gave
her $15.17 in change. How much money
did Jayda spend on bread and milk?
20.00 – m = 15.17
Or
15.17 + m = 20.00

5. Example 3
 Brittney hiked to the summit of Mt. Whitney,
which began from the upper trailhead at
8365 ft. The elevation of Mt. Whitney’s summit
is 14,496 ft. What was Brittney’s elevation gain
from the trailhead to the summit?
14496 – 8365 = g
Or
8365 + g = 14496

6. Example 4
 Cody learned in his US History class that
President John F. Kennedy was elected in
1960 at the age of 43. In what year was
he born.
1960 – 43 = a
Or
1960 – a = 43

7. Your Turn
 Greyson and Cooper went to the theater
with $20.00 and left the theater with
$10.50. How much money did they
spend at the theater?

8.  From 1990 to 2000 the population of Salt
Lake City increased from 180,635 to
215,768. How may more people lived in
Salt Lake City in 2000 than in 1990?

9.  In the three 8th grade classrooms at
Snowcrest Junior High, there are 29
students, 28 students and 31 students.
What is the total number of students in the
three classrooms?