Find: 4 cubed (see photo above)

• Cursor to 4 on D
• Find: 8 cubed
• Cursor to 8 on D

To precisely determine the last digit in our answer, we use our old trick of multiplying the last digits in our head 8 X 8 = 64 .. and the 4 in 64 X 8 is 32. So our answer ends with 2.

Find: Cube root of 216

• Cursor to 216 on third section of K

Find: Cube root of 12,167

• Cursor to 12167 on 2nd section of K. We use the 2nd section because 12,167 is 1000 times 12.167... and 12 is on the 2nd section of the K scale.

Find: 85 cubed

• Cursor to 85 on D
• Actual answer is 614,125. Our margin of error is about 0.02%... more than good enough for any practical application. Even if we read 613,000, our margin of error is less than 1%. We determine our decimal point by estimation. 100 cubed would be 1,000,000 ... easy to estimate because the cube of 10 squared is 10 to the 6th power (multiply the exponents) ... or 1,000,000. Our answer must be a bit less than that ... somewhere in the hundred thousands.

Find: Cube root of 0.0067

• Which section of the K scale should we use? Hmmmm ... 2 zeros after the decimal point. See instructions above. Use the first section.
• Cursor to 67 on first section of K