## TOOL: OCTAL SUBTRACTION CALCULATOR WITH STEPS

#### OCTAL SUBTRACTION CALCULATOR WITH STEPS

Enter positive octal numbers.

SOLUTION STEPS

The Last Step:

83s place:

Subtract the numbers in the 83s place.

10 = 1

Write 1 to the 83s place.

All Steps:

80s place:

Subtract the numbers in the 80s place.

63 = 3

Write 3 to the 80s place.

81s place:

4 < 5

Borrow 1 from the 82s place.

82s place:

We can't regroup from 0.

83s place:

Borrow 1 from 2

21 = 1

82s place:

Add 8 to the 82s place.

0 + 8 = 8

82s place:

Borrow 1 from 8

81 = 7

81s place:

Add 8 to the 81s place.

4 + 8 = 12

81s place:

Subtract the numbers in the 81s place.

125 = 7

Write 7 to the 81s place.

82s place:

Subtract the numbers in the 82s place.

76 = 1

Write 1 to the 82s place.

83s place:

Subtract the numbers in the 83s place.

10 = 1

Write 1 to the 83s place.

Copied to clipboard
Copy Text

## INFORMATION

### OCTAL SUBTRACTION

To subtract an octal number from another you can follow the steps below.

• Write the numbers so that the same places are aligned in the same column.

• Start subtracting numbers from the right-most digit and each time move one digit to the left.

• In any digit, if the number on top is greater than or equal to the number on bottom, do the subtraction and write the result to the same place.

• If the number on top is smaller than the number on bottom, move left until a non-zero number is reached on top.

• Borrow 1 from the first non-zero number and reduce it by 1.

• Add 8 to one digit right and move to that digit.

• Continue regrouping and adding 8 to the lower digit until the digit to be subtracted is reached.

• Do the subtraction and move one digit left.

### WHAT IS OCTAL SUBTRACTION CALCULATOR?

The octal subtraction calculator,

• Calculates the subtraction of the entered numbers (whole or decimal) and
• Illustrates the solution steps by using animations.

### HOW TO USE THE OCTAL SUBTRACTION CALCULATOR?

You can use the octal subtraction calculator in two ways.

• #### USER INPUTS

You can enter two positive octal numbers to the input boxes and click on the "CALCULATE" button. The result and explanations appaer below the calculator

• #### RANDOM INPUTS

You can click on the DIE ICON next to the input boxes. If you use this property, two random numbers are generated and entered to the calculator, automatically. You can see the result and explanations below the calculator. You can create your own examples and practice using this property.

• #### CLEARING THE INPUT BOX

To find the difference of some other numbers you can clear the input box by clicking on the CLEAR button under the input box.