1. Splash Screen

2. Lesson Menu Five-Minute Check (over Lesson 1–7) Main Idea and Vocabulary Example 1:Find the Solution of an Equation Example 2:Solve an Equation Mentally Example 3:Use Guess and Check

3. Main Idea/Vocabulary equation equals sign solve solution Solve equations by using mental math and the guess and check strategy.

4. Example 1 Find the Solution of an Equation Is 5, 6, or 7 the solution of the equation 4 + b = 10? Answer: The solution of 4 + b = 10 is 6 because replacing b with 6 results in a true sentence.

5. 1.A 2.B 3.C Example 1 Is 9, 10, or 11 the solution of the equation 24 – d = 13? A.9 B.10 C.11

6. Example 2 Solve an Equation Mentally Solve 16 = 4s mentally. 16 = 4s THINK 16 equals 4 times what number? 16 = 4 ● 4You know that 16 = 4 ● 4. 16 = 16The solution is 4. Answer: 4

7. 1.A 2.B 3.C 4.D Example 2 A.5 B.6 C.20 D.25 Solve 5p = 30 mentally.

8. Example 3 ANIMALS On average, a cat lives 12 years. This is 13 years fewer than the average life span of a horse. Solve the equation h – 13 = 12 to find the average life span of a horse. Use the guess and check strategy. Answer: The solution is 25. So, the average life span of a horse is 25 years. Use Guess and Check Try 24. 24 – 13= 12 11 12 Try 25. 12= 12 h – 13= 12 25 – 13= 12 h – 13= 12

9. 1.A 2.B 3.C 4.D Example 3 A.2 years old B.5 years old C.11 years old D.16 years old AGE Samantha is 9 years old. This is seven years less than her sister Dinah’s age. Solve the equation d – 7 = 9 to find Dinah’s age.

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11. Resources Five-Minute Check (over Lesson 1–7) Image Bank Math Tools Rectangular Arrays Area of Rectangles and Squares

12. 1.A 2.B 3.C 4.D Five Minute Check 1 A.3 quarters, 2 dimes, 2 nickels B.2 quarters, 3 dimes, 2 nickels C. 3 quarters, 3 dimes, 1 nickel D. 4 quarters, 2 dimes, 1 nickel Use the guess and check strategy to solve. MONEY Jackson has 7 coins that total $1.10. What are the coins? (over Lesson 1-7)

13. 1.A 2.B 3.C 4.D Five Minute Check 2 A.4, 4, and 12 B. 5, 7, and 8 C. 5, 6, and 8 D. 3, 7, and 9 Use the guess and check strategy to solve. NUMBERS Chin Li is thinking of three numbers from 1 through 9 whose sum is 20. Find three possible numbers. (over Lesson 1-7)

14. 1.A 2.B 3.C 4.D Five Minute Check 3 A.two 2-pair packages and one 5-pair package B.two 2-pair packages and two 5-pair packages C.one 2-pair package and three 5-pair packages D.two 2-pair packages and three 5-pair packages A department store sells white athletic socks in packages of 2 pairs of socks and packages of 5 pairs of socks. If Tia bought some of both packages and bought a total of 14 pairs of socks, how many of each package did she buy? (over Lesson 1-7)

15. End of Custom Shows