Digital Root Worksheet
The trick (Gunita Samuccayah): Add the digits of a number; keep adding until one digit is left (a total of 9 stays 9). For a product, multiply the digital roots of the two numbers and take the digital root of that. If your answer’s digital root is different, the answer is wrong.
NameDateTime takenScore ___ / 40
- 1.Digital root of 88 × 50 =
- 2.Digital root of 70 × 80 =
- 3.Digital root of 44 × 27 =
- 4.Digital root of 19426 =
- 5.Digital root of 71 × 89 =
- 6.Digital root of 87 × 61 =
- 7.Digital root of 94369 =
- 8.Digital root of 18813 =
- 9.Digital root of 45226 =
- 10.Digital root of 96 × 87 =
- 11.Digital root of 43 × 42 =
- 12.Digital root of 79 × 99 =
- 13.Digital root of 56511 =
- 14.Digital root of 4554 =
- 15.Digital root of 47936 =
- 16.Digital root of 5406 =
- 17.Digital root of 82006 =
- 18.Digital root of 79 × 63 =
- 19.Digital root of 13264 =
- 20.Digital root of 920 =
- 21.Digital root of 42 × 99 =
- 22.Digital root of 77029 =
- 23.Digital root of 14345 =
- 24.Digital root of 78 × 57 =
- 25.Digital root of 8070 =
- 26.Digital root of 13 × 97 =
- 27.Digital root of 52087 =
- 28.Digital root of 78109 =
- 29.Digital root of 57 × 74 =
- 30.Digital root of 59567 =
- 31.Digital root of 98 × 32 =
- 32.Digital root of 40 × 83 =
- 33.Digital root of 729 =
- 34.Digital root of 87056 =
- 35.Digital root of 91 × 13 =
- 36.Digital root of 17945 =
- 37.Digital root of 77 × 98 =
- 38.Digital root of 18346 =
- 39.Digital root of 73 × 97 =
- 40.Digital root of 20 × 23 =
Answer key
- 8
- 2
- 9
- 4
- 1
- 6
- 4
- 3
- 1
- 9
- 6
- 9
- 9
- 9
- 2
- 6
- 7
- 9
- 7
- 2
- 9
- 7
- 8
- 9
- 6
- 1
- 4
- 7
- 6
- 5
- 4
- 8
- 9
- 8
- 4
- 8
- 4
- 4
- 7
- 1
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