Lesson Menu Five-Minute Check (over Lesson 1–6) Main Idea Example 1:Use the Guess and Check Strategy
Main Idea/Vocabulary Solve problems by using the guess and check strategy.
Example 1 Use the Guess and Check Strategy Hal is younger than Randi. Each of their ages is a different prime number. The total of their ages is 91. How old are Hal and Randi? UnderstandYou know that Hal is younger than Randi. Each of their ages is a different prime number, and the total of their ages is 91. You need to find what their ages are. PlanMake a guess until you find an answer that makes sense for the problem.
Example 1 Use the Guess and Check Strategy Solve CheckHal’s age is less than Randi’s age. Both 2 and 89 are prime numbers, and 2 + 89 = 91. So, the answer is correct. Answer: So, Hal is 2 years old, and Randi is 89 years old.
1.A 2.B 3.C 4.D Example 1 A.2 $10-bills, 1 $5-bill, 2 $1-bills, 2 dimes, and 1 nickel B.1 $10-bill, 2 $5-bills, 2 $1-bills, 2 dimes, and 1 penny C.1 $20-bill, 1 $5-bill, 3 $1-bills, 2 quarters, 1 penny D.2 $10-bills, 1 $5-bill, 2 $1-bills, 1 quarter, 1 nickel, and 1 penny Leah has 5 bills and 3 coins in her pocket. If she has a total of $27.31 in her pocket, what kind of bills and coins does she have?