OneNote 5/28/23, 4:44 PM 2.2 Add Real Numbers Monday, August 30, 2021 10:00 AM One way to add two real numbers is to use a number line - To add a positive, move to the right - To add a negative, move to the left + -3 -2 -1 1 2 3 4 Ext] Add two integers using the number line. a.)-3+6 =- 3 b.)-4+(-5) =- 9 - 9 -8 -1 -6 5 Rules of addition -To add two numbers with the same sign add their absolute values. The sum has the same sign as the numbers added Ex. 8+7 & Ex. - 6+(-10) https://dlsorg-my.sharepoint.com/personal/256215gunn_student_dls_org/_layouts/15/Doc.aspx?sourcedoc={93b53497-b600-4c87-b5c3-7ba2e1d8326 ... 1/3
5/28/23, 4:44 PM OneNote -To add two numbers with different signs, subtract the lesser absolute value from the greater absolute value from the greater absolute value. The sum has the same sign as the number with the greatest value. Ex. - 12+7 & Ex.18+(-4) a. - 5.3+(-4.9) =- 10.2 1 5.3 4.9 10.2 b. 19.3+(-12.2) = 7.1 -19.3 12.2 7.1 Properties of Addition · Commutative Property- the order in which you add two numbers does not change the sum Algebra: a+b=b+a Ex: 3+(-2) =- 2+3 Associative Property- the way you group three numbers in a sum doesn't change the sum. Identity Property- the sum of a number and 0 is the number. Indentify ty properties of addition a) Associative b) Inv https://dlsorg-my.sharepoint.com/personal/256215gunn_student_dls_org/_layouts/15/Doc.aspx?sourcedoc={93b53497-b600-4c87-b5c3-7ba2e1d8326 ... 2/3
5/28/23, 4:44 PM OneNote https://dlsorg-my.sharepoint.com/personal/256215gunn_student_dls_org/_layouts/15/Doc.aspx?sourcedoc={93b53497-b600-4c87-b5c3-7ba2e1d8326 ... 3/3