Write the related fact to find the value of the variable.
- h 7 10 2. y 8 4 3. 14 a 9
- 8 s 9 5. 16 u 5 6. t 4 11
Find the missing addend, minuend,
or subtrahend.
- 13 f 6 8. 8 5 p
- c 4 10 10. b 7 4 11. d 5 13
- r 8 5 13. 3 t 8 14. 8 y 15
- 1 f 9 16. 18 c 9 17. p 3 9
- 2 9 x 19. b 3 6 20. 7 n 6
- 4 r 12 22. m 6 4 23. a 2 6
- 7 c+ 5 25. 13 v 5 26. 8 s 16
Remember: You can write
5 p8 as 8 5 p.
- Find the value of the variable.
8 n 17
A 10 B 6 C 8 D 9
- Find the value of the variable.
p 9 18
F 11 G 9 H 10 J 8
Write an addition or subtraction sentence using a
variable. Then find the value of the variable.
- Nadia is a dog walker. Each
week she walks 18 dogs. She
walks 10 dogs on the weekend.
How many dogs does she walk
on weekdays?
28. Mel is a cat sitter. This week
he fed 3 fewer cats than last
week. This week he fed 9 cats.
How many cats did he feed
last week?
8204-6_076-077 10/20/05 9:21 AM Page 77