Keyword | CPC | PCC | Volume | Score | Length of keyword |
---|---|---|---|---|---|

borrow digit | 0.66 | 0.3 | 4999 | 38 | 12 |

borrow | 1.84 | 0.9 | 5547 | 83 | 6 |

digit | 0.81 | 0.5 | 423 | 47 | 5 |

Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|

borrow digit | 1.22 | 0.2 | 1487 | 37 |

In that case, you need to borrow from the next column to the left. Borrowing is a two-step process: Subtract 1 from the top number in the column directly to the left. Cross out the number you’re borrowing from, subtract 1, and write the answer above the number you crossed out. Add 10 to the top number in the column you were working in.

Sometimes, when you are subtracting large numbers, the top digit in a column is smaller than the bottom digit in that column. In that case, you need to borrow from the next column to the left. Borrowing is a two-step process:

Borrowing is a two-step process: Subtract 1 from the top number in the column directly to the left. Cross out the number you’re borrowing from, subtract 1, and write the answer above the number you crossed out. Add 10 to the top number in the column you were working in.

The borrow out signal is set when the subtractor needs to borrow from the next digit in a multi-digit subtraction. That is, when . Since and are bits, if and only if and . An important point worth mentioning is that the half subtractor diagram aside implements and not since on the diagram is given by.