splash screen. 1.a 2.b 3.c 4.d five minute check 1 a.–9 b.–1 c. 1 d.9 find 4 – 5. (over lesson...
DESCRIPTION
Lesson Menu Main Idea Key Concept: Multiply Integers with Different Signs Example 1: Multiple Integers with Different Signs Example 2: Multiple Integers with Different Signs Key Concept: Multiply Integers with Same Sign Example 3: Multiply Integers with the Same Sign Example 4: Multiply Integers with the Same Sign Example 5: Multiply Integers with the Same SignTRANSCRIPT
1. A2. B3. C4. D
A. –9 B. –1 C. 1 D. 9
Find 4 – 5.
(over Lesson 2-5)
Find –14 – 34.A. –48 B. –20 C. 20 D. 48
Find –45 – (–8).
A. –53 B. –37 C. 37 D. 53
Main IdeaKey Concept: Multiply Integers with Different SignsExample 1: Multiple Integers with Different SignsExample 2: Multiple Integers with Different SignsKey Concept: Multiply Integers with Same SignExample 3: Multiply Integers with the Same SignExample 4: Multiply Integers with the Same SignExample 5: Multiply Integers with the Same Sign
• Multiply integers (2.2.8B) (M8.A.3.3.1).
Multiply Integers with Different Signs
Find 5(–4).
Answer: –20
5(–4) = –20 The integers have different signs. The product is negative.
1. A2. B3. C4. D
A. –15
B. –2
C. 2
D. 15
Find 3(–5).
Multiply Integers with Different Signs
Find –3(9).
Answer: –27
–3(9) = –27 The integers have different signs. The product is negative.
1. A2. B3. C4. D
A. –35
B. 2
C. 12
D. 35
Find –5(7).
Multiply Integers with the Same Sign
Find –6(–8).
Answer: 48
–6(–8) = 48 The integers have the same sign. The product is
positive.
1. A2. B3. C4. D
A. –28
B. –11
C. 11
D. 28
Find –4(–7).
Find (–8)2.
Answer: 64
Multiply Integers with the Same Sign
(–8)2 = (–8)(–8) There are two factors of –8.
= 64 The product is positive.
1. A2. B3. C4. D
A. –25
B. –10
C. 10
D. 25
Find (–5)2.
Find –2(–5)(–6).
Answer: –60
Multiply Integers with the Same Sign
–2(–5)(–6) = [–2(–5)](–6)Associative Property
= 10(–6) –2(–5) = 10
= –60The
product is negative.
1. A2. B3. C4. D5. D
A. 84
B. –14
C. 14
D. –84
Find –7(–3)(–4).
REVIEW
Multiply.
1. 6(-10)
2. 11(-4)
3. -2(14)
4. -8(5)
5. -15(-3)
6. -7(-9)
7. (-8)2
8. (-3)
9. -1(-3)(-4)
10. 2(4)(5)
3
-60
-44-28-40456364
-27-12
40
End of the Lesson
Five-Minute Check (over Lesson 2–5)
Image Bank
Math Tools
Adding Integers
Comparing and Ordering Integers
Subtracting Positive and Negative Integers
