Making 10
5 + ? = 10
5
10 plus how many more make 20?
10
What comes after 54
55
What comes before 18
17
10+8=?
18
2 + ?=10
8
13 plus ? more make 20
7
What comes after 67
68
What comes before 23
22
15-5=?
10
3 and ? make 10
7
15 + ?=20
5
What comes after 97
98
What comes before 87
86
10+6=?
16
6 plus ? more make 10
4
12 + ?=20
8
What comes after 102
103
What comes before 98
97
11+7=?
18
9 and ? more make 10
1
11+?=20
9
What comes after 76
77
What comes before 100
99
20-6=?
14