Addition
9+9=
18
7-1=
6
2+__=6
4
2+3+2=
7
Jenny has 17 cupcakes. She wants to share them equally with her friend. Can she do this? Why or why not?
No. 17 is an odd number.
7+9=
16
11-6=
5
6+__=10
4
5+4+2=
11
Bob has 14 football cards. He wants to share them equally with his friends. Can he do this? Why or why not?
11+4=
15
20-0=
20
10+__=16
6
10+3+1=
14
Cassie and Billy ran a race. Cassie ran it in 15 seconds. Billy ran it in 20 seconds. How many seconds faster was Cassie?
She was 5 seconds faster.
2+20=
22
20-10=
10
18+__=20
2
12+4+3=
19
Baker Barbara baked 25 chocolate cakes and 10 vanilla cakes. How many cakes did Baker Barbara bake?
She baked 35 cakes.
4+30=
34
19-8=
11
7+__=20
13
10+11+6=
27
Tilly took two days to count all of her shoes. On the first day, she counted 21 shoes. On the second day, she counted 11 shoes. How many shoes does she have all together?
32 shoes.