Counting and Cardinality

What number comes next?
55, 60, 65, ___, 75, 80

• 70
• 66
• 40
• 75

What number comes next?
60, 70, ____, 90, 100

• 75
• 80
• 85
• 71

What number comes next?
30, ____, 40, 45, 50

• 35
• 20
• 65
• 30

What number comes next?
30, 40, ____, 60, 70

• 45
• 55
• 50
• 90

Count by 2's.

• 2, 4, 6
• 1, 2, 3, 4, 5, 6

What number is missing? 25, 30, 35, _, 45, 50

• 30
• 55
• 65
• 40

What number is missing? 10, _, 20, 25, 30

• 35
• 15
• 40
• 45

What number is missing? 55, _ , 65, 70, 75, 80

• 60
• 85
• 100
• 90

What number comes next? 45, 50, 55, 60, _

• 70
• 55
• 75
• 65

What number is missing? 20, 25, _, 35, 40

• 35
• 45
• 30
• 50