Chapter 1 Math

A

100

8+1=

9

200

6+1+4+0=

11

300

Hailey took 15 pictures at Isle Royale National Park. She emailed 9 of the pictures to friends. How many pictures did Hailey not email to friends?

6 pictures Hailey did not email.

B

100

6+6=

12

200

5+5+3+1=

14

300

Hailey saw 8 geese flying over the lighthouse. Horatio saw 4 geese swimming. How many geese did Hailey and Horatio see?

12 geese.

C

100

9-9=

0

200

7+n=13

n=6

D

100

1+4+4=

9

200

9+n=18

n=9

E

100

5+5+2=

12

200

What are the facts for this fact family? 4-8-12

4+8=12

8+4=12

12-4=8

12-8=4