- positive and positive integers
- positive and negative integers
- negative and negative integers

Draw up a 'rule' that would guide us when we multiply integers (especially when it involves negative integers).

Vocabulary List: Numerical Part. Sign. Positive. Negative. Product.

You are going to work in pairs or threes.

1. One of you will download the file "Chapter 2 Investigative Activity - Addition and Product.numbers" (from GoogleSite: 01 Mathematics). Another will display the blog post so that you could enter your discussion into the Comments.

2. Refer to the worksheet "Product of Numbers":

- (a) Enter formula to find the value of "a x b" of the first set of numbers (i.e. (-4) x (-4)).

- Press ENTER and the spreadsheet will compute the value automatically.
- (b) We are going to tell the spreadsheet to use the row of numbers in Row 2 and Column B for computation.
- At the formula bar, click at C2 and select (C$2) absolute row. The spreadsheet will use the numbers in Row 2 for calculation.

- At the formula bar, click at B3 and select ($B3) absolute column. The spreadsheet will use the numbers in Column B for calculation.

- (c) To copy the formula, select cell B3, place the cursor at the bottom right corner. It will turn to a cross-hair. Now drag it to cover the entire area to be computed.

- (a) What happens when a positive integer x a negative integer (given that the positive number has a greater numerical value)?
- (b) What happens when a positive integer x a negative integer (given that the positive number has a smaller numerical value)?
- (c) What happens when a negative integer x a negative integer? How similar or different it is when compared the product two positive numbers?

5. Sign off the Comments with the name(s) of both of you.

a) The final answer would be a positive number.

ReplyDeleteb) The final answer would be a negative number

c) The final answer would be a positive number.

(a) Result is positive.

ReplyDelete(b)Result is negative.

G3.

Delete