Please get out your homework and a red

  • Slides: 14
Download presentation
Please get out your homework and a red pen and set it to the

Please get out your homework and a red pen and set it to the side. Next, make sure your journals are labeled: 3 -4 : Multipy Integers. Finally, complete the quick check to the left in your journal on the page you just labeled. Solve: 1. -2 + -7 2. -4 + 8 3. -7 + 4 4. -8 – (-2) 5. 8 - 12 Thanks!

ANSWERS 1. -9 2. 4 3. -3 4. -6 5. -4 Course 2, Lesson

ANSWERS 1. -9 2. 4 3. -3 4. -6 5. -4 Course 2, Lesson 3 -4

The Number System WHAT happens when you add, subtract, multiply, and divide integers? Course

The Number System WHAT happens when you add, subtract, multiply, and divide integers? Course 2, Lesson 3 -4

The Number System • To multiply integers with same and different signs Course 2,

The Number System • To multiply integers with same and different signs Course 2, Lesson 3 -4

The Number System Multiply Integers with Different Signs Words The product of two integers

The Number System Multiply Integers with Different Signs Words The product of two integers with different signs is negative. Examples Course 2, Lesson 3 -4 6(− 4) = − 24 − 5(7) = − 35

Step-by-Step Example 3(– 5) 5(-4) -6 * 8 3 * -9 Need Another Example?

Step-by-Step Example 3(– 5) 5(-4) -6 * 8 3 * -9 Need Another Example?

The Number System Multiply Integers with the Same Sign Words The product of two

The Number System Multiply Integers with the Same Sign Words The product of two integers with the same sign is positive. Examples Course 2, Lesson 3 -4 2(6) = 12 − 10(− 6) = 60

Step-by-Step Example – 11(– 9) -6 * -8 (-4)2 (-8)2 Need Another Example?

Step-by-Step Example – 11(– 9) -6 * -8 (-4)2 (-8)2 Need Another Example?

Step-by-Step Example – 3(– 4)(– 2) Determine if the answer will be positive or

Step-by-Step Example – 3(– 4)(– 2) Determine if the answer will be positive or negative first Need Another Example?

Need Another Example? You try: (– 2)(– 5)(– 6). Answer – 60

Need Another Example? You try: (– 2)(– 5)(– 6). Answer – 60

Step-by-Step Example Let’s talk about this one… A submersible is diving from the surface

Step-by-Step Example Let’s talk about this one… A submersible is diving from the surface of the water at a rate of 90 feet per minute. What is the depth of the submersible after 7 minutes? Need Another Example?

Need Another Example? A mine elevator descends at a rate of 200 feet per

Need Another Example? A mine elevator descends at a rate of 200 feet per minute. Write a multiplication expression to represent the total distance descended after four minutes. Then find the product and explain its meaning. Answer 4(– 200); – 800; In four minutes, the elevator will descend 800 feet.

The Number System How did what you learned today help you answer the WHAT

The Number System How did what you learned today help you answer the WHAT happens when you add, subtract, multiply, and divide integers? Course 2, Lesson 3 -4

Ratios and Proportional The Number Relationships System Homework: Page 237 -239 #1 -8 all,

Ratios and Proportional The Number Relationships System Homework: Page 237 -239 #1 -8 all, 12, 13, 16 -23 all Course 2, Lesson 3 -4