5-1=
4
1+3=
4
7-4=
3
What number is missing? 5, 10, 15, 20, 25, ___, 35
30
What number is missing? 10, 20, 30, ___, 50?
40
What number is less? 2 or 5?
2
2+3=
5
3+6=
9
2-1=
1
Which number is greater? 8 or 6?
8
Which number is greater? 5 or 3?
5
Which number is greater? 4 or 9?
9
What number is missing? 5, 10, 15, 20, ___, 30
25
2+5=
7
What number is less? 7 or 4?
4
What number is missing? 50, ___, 70, 80
60
What number is less? 1 or 2?
1