Word に計算式や数式を挿入する | Microsoft Word チュートリアル
How to calculate in word table (sum, multiplication, average)
Microsoft Wordの表に数式を入力する方法
Add numbers in columns in a Word table: Insert formula to sum a column or row of table in Word?
how to insert formula to sum a column or row of table in Microsoft word?
Excelの数式をWord文書に入力する方法
Creating formulas in tables in Word 2007 and 2010 (demo'd in 2007)
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Word 2010 Tutorial Inserting Table Formulas Microsoft Training Lesson 17.1
How to Insert basic Formulas (IF, SUM, PRODUCT) in a Word Table
How to create table formulas in Microsoft® Word 2013