Printable primary math worksheet for math grades 1 to 6 based on ... - Free Printable

Let me work through each number wheel carefully.

Each wheel has a center operation and numbers in the inner ring. The outer ring needs to be filled by applying the center operation to each inner number.

Wheel 1: 2+
Inner numbers: 14, 9, 8, 18, 15, 13, 7, 17
Outer = Inner + 2
- 14 + 2 = 16
- 9 + 2 = 11
- 8 + 2 = 10
- 18 + 2 = 20
- 15 + 2 = 17
- 13 + 2 = 15
- 7 + 2 = 9
- 17 + 2 = 19

Wheel 2: 15−
Inner numbers: 12, 9, 7, 8, 15, 13, 14, 10
Outer = 15 - Inner
- 15 - 12 = 3
- 15 - 9 = 6
- 15 - 7 = 8
- 15 - 8 = 7
- 15 - 15 = 0
- 15 - 13 = 2
- 15 - 14 = 1
- 15 - 10 = 5

Wheel 3: 20−
Inner numbers: 14, 5, 9, 12, 8, 7, 4, 6
Outer = 20 - Inner
- 20 - 14 = 6
- 20 - 5 = 15
- 20 - 9 = 11
- 20 - 12 = 8
- 20 - 8 = 12
- 20 - 7 = 13
- 20 - 4 = 16
- 20 - 6 = 14

Wheel 4: 6+
Inner numbers: 12, 6, 7, 13, 2, 8, 4, 9
Outer = Inner + 6
- 12 + 6 = 18
- 6 + 6 = 12
- 7 + 6 = 13
- 13 + 6 = 19
- 2 + 6 = 8
- 8 + 6 = 14
- 4 + 6 = 10
- 9 + 6 = 15

Wheel 5: 8+
Inner numbers: 12, 4, 7, 11, 9, 6, 8, 5
Outer = Inner + 8
- 12 + 8 = 20
- 4 + 8 = 12
- 7 + 8 = 15
- 11 + 8 = 19
- 9 + 8 = 17
- 6 + 8 = 14
- 8 + 8 = 16
- 5 + 8 = 13

Wheel 6: 12−
Inner numbers: 11, 3, 8, 6, 5, 4, 7, 9
Outer = 12 - Inner
- 12 - 11 = 1
- 12 - 3 = 9
- 12 - 8 = 4
- 12 - 6 = 6
- 12 - 5 = 7
- 12 - 4 = 8
- 12 - 7 = 5
- 12 - 9 = 3

Final Answer:

Wheel 1 (2+): 16, 11, 10, 20, 17, 15, 9, 19

Wheel 2 (15−): 3, 6, 8, 7, 0, 2, 1, 5

Wheel 3 (20−): 6, 15, 11, 8, 12, 13, 16, 14

Wheel 4 (6+): 18, 12, 13, 19, 8, 14, 10, 15

Wheel 5 (8+): 20, 12, 15, 19, 17, 14, 16, 13

Wheel 6 (12−): 1, 9, 4, 6, 7, 8, 5, 3