What's the missing number? (Level 1)

Which number is missing from the set: 1, 2, __, 4, 5, 6?

• 3

• 7

• 8

• 9

Tags

CCSS.1.NBT.A.1

Which number is missing from the set: 7, 8, 9, __, 11, 12?

• 10

• 13

• 14

• 15

Tags

CCSS.1.NBT.A.1

Which number is missing from the set: 13, 14, __, 16, 17, 18?

• 15

• 19

• 20

• 21

Tags

CCSS.1.NBT.A.1

Which number is missing from the set: 19, 20, 21, __, 23, 24?

• 22

• 25

• 26

• 27

Tags

CCSS.1.NBT.A.1

Which number is missing from the set: 28, 29, __, 31, 32, 33?

• 30

• 34

• 35

• 36

Tags

CCSS.1.NBT.A.1

Which number is missing from the set: 34, 35, 36, __, 38, 39?

• 37

• 40

• 41

• 42

Tags

CCSS.1.NBT.A.1

Which number is missing from the set: 43, 44, __, 46, 47, 48?

• 45

• 49

• 50

• 51

Tags

CCSS.1.NBT.A.1

Which number is missing from the set: 49, 50, 51, __, 53, 54?

• 52

• 55

• 56

• 57

Tags

CCSS.1.NBT.A.1

Which number is missing from the set: 55, 56, __, 58, 59, 60?

• 57

• 61

• 62

• 63

Tags

CCSS.1.NBT.A.1

Which number is missing from the set: 61, 62, 63, __, 65, 66?

• 64

• 67

• 68

• 69

Tags

CCSS.1.NBT.A.1