1. calculating a partial sum of numbers before adding more items
Usage: present participle of subtotal

1. the process of calculating partial sums
Usage: gerund form

Examples

• She was subtotaling the expenses as she entered each receipt.
• The cashier kept subtotaling items before scanning the next group.
• Subtotaling helps you track spending during a shopping trip.
• The spreadsheet automatically handles the subtotaling of each category.
• After subtotaling the first section, he moved on to the next column.
• The subtotaling feature makes it easier to verify calculations.