1. Addition and Subtraction Word Problems
Lesson 5
Addition and Subtraction Word Problems

2. Example 1
The Duke counted 5260 people. The Duchess counted 4720 people. How much greater was the Duke’s count?
5260 – How much greater (difference)
Subtract

3. Example 2
Four hundred seventeen birds were in trees at eight o’ clock. By nine o’ clock the number increased to nine hundred forty-two. How many birds arrived between eight and nine o’ clock?
942 – 417 How many arrived (difference)
525
Check = 942

4. Example 3
At sunrise many ducks were on the pond. Then four hundred twenty-five ducks flew away. Six hundred forty-two ducks remained on the pond. How many ducks were on the pond at sunrise?
D – 425 = 642
D = 1067

5. Example 4
George had five dollars and forty-two cents. Then his mom gave him some money. How he has nine dollars and sixty-five cents. How much money did his mom give him?
$9.65 – $5.42 Difference
$4.23

6. Practice
Page 21 a-b

7. Practice A
Hundreds of knights came to the tournament. Then four hundred twenty knights went home. Seven hundred fifty-six knights remained. How many knights came to the tournament
1176 Knights

8. Practice B
Rita had nine thousand, thirty-five items in her basement. Then she found some more items. How she had ten thousand eighty-one items. How many items did she find?
10,081 – 9,035
1,046

9. Homework
Problem Set all