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## Today we will add with negative integers.

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**Today we will add with negative integers.**Add=to put together integers=numbers that consist of whole numbers and their opposites Concept**When you get older and you start to “collect” credit**cards and you start to buy things on “credit” you will be borrowing from the banks. • You buy an iPod for $199.00 • You now owe $199.00 (-199) • You buy a laptop for $599.00 • You now owe $599.00 (-599) • All together you owe $798.00 • (-798) APK**Add**• Add means to put together. $199.00 + $299.00=$498.00 $300.00 + $600.00=$900.00 Concept**Integer**• numbers that consist of whole numbers and their opposites +5 -5 +500 -500 5 500 Concept**Absolute Value**The absolute value of an integer is its distance from zero on the number line.For example, |-3| = 3 and |-5| = 5.**Importance**• It will help you be a good “borrower” since you know how much you owe and how much you will have in order to pay. • It will be on tests and you need to know how to do it! • What would be other reasons to know how to add integers? IMP**Let’s watch this on BrainPop!**Concept**What does this look like on a number line?**+9 + -8 SD**Let’s try one!**George owes his friend Jeanne $3. If he borrows another $6, how much will he owe her altogether? -3 + -6 -9 SD**+2 + - 7**-5 SD**+5 + - 7**1. Find the absolute value of each integer. 2. Subtract the smaller number from the larger number you get in Step 1. 3. The result from Step 2 takes the sign of the integer with the greater absolute value. -2 SD**+9 + - 5**1. Find the absolute value of each integer. 2. Subtract the smaller number from the larger number you get in Step 1. 3. The result from Step 2 takes the sign of the integer with the greater absolute value. +4 SD**-12 + + 5**1. Find the absolute value of each integer. 2. Subtract the smaller number from the larger number you get in Step 1. 3. The result from Step 2 takes the sign of the integer with the greater absolute value. 12 & 5 12 – 5 7 -7 GP**-15 + + 15**1. Find the absolute value of each integer. 2. Subtract the smaller number from the larger number you get in Step 1. 3. The result from Step 2 takes the sign of the integer with the greater absolute value. 15 & 15 15 – 15 0 0 GP**+11 + -13**1. Find the absolute value of each integer. 2. Subtract the smaller number from the larger number you get in Step 1. 3. The result from Step 2 takes the sign of the integer with the greater absolute value. 11 & 13 13 – 11 2 -2 GP**Let’s review!**• What does add mean? To put together. • What is an integer? numbers that consist of whole numbers and their opposites. What is the absolute value of -15? Of -6? Concept