Missing Addends, Part 2SAXON LESSON 2

New Concept

Derek rolled a dice three times.

1st roll: 5

2nd roll: 3

3rd roll: x

If the total number of dots on all three rolls was 12…can you draw a

picture of Derek’s third roll?

Video Instruction

Examples

6+N+5 = 17 n=

4+3+2+B+6= 20

Lesson Practice

Find Each Missing Addend:

A. 8 + A + 2 = 17 A=

B. B+ 6 + 5 = 12 B=

C. 4 + C + 2+ 3 + 5 = 20 C=

Mixed Practice

1. Hoppy ate 5 carrots in the morning and 6 carrots in the afternoon. How

many carrots did Hoppy eat in all?

3. 9 + N =13 N= 9. 8+ B + 3 = 16 B=

5. P+ 6 = 13 P= 11. 2 + 6 + 9 =

7. 4 + 8+ 5 = 13. 9 +5 +3 =

Mixed Practice

15. 5 + 3 + Q = 9 Q= 17. 5 + 3 + T = 10 T=

19. 2 + X + 7 = 11 X= 21. 5+5+6+4+X=23 X=

23. Write a number sequence for each picture:

25. 22 problems in total