Splash Screen. Lesson Menu Five-Minute Check (over Lesson 4–8) Main Idea and Vocabulary Example 1:Evaluate Expressions Example 2:Write and Evaluate Expressions.

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Presentation transcript:

Splash Screen

Lesson Menu Five-Minute Check (over Lesson 4–8) Main Idea and Vocabulary Example 1:Evaluate Expressions Example 2:Write and Evaluate Expressions Example 3:Write and Evaluate Expressions

Main Idea/Vocabulary I will write and evaluate addition expressions. variable expression evaluate

Example 1 Write the expression. Use 1 cup and 5 counters to represent h + 5. Replace h with 2. Place 2 counters in the cup. Add 2 and 5. h + 5 Evaluate the expression h + 5 if h = Evaluate Expressions Answer: There is a total of 7 counters.

1.A 2.B 3.C 4.D Example 1 A.6 B.10 C.12 D.24 Evaluate the expression k + 4 if k = 6.

Example 2 Write and Evaluate Expressions Evaluate 4 + j if j = j Write the expression. Use 1 cup and 4 counters to represent 4 + j Replace j with 5. Place 5 counters in the cup. 9 Add 4 and 5. Answer: There is a total of 9 counters.

1.A 2.B 3.C 4.D Example 2 A.3 B.9 C.12 D.27 Evaluate 3 + c if c = 9.

Example 3 Write and Evaluate Expressions Tyler had 5 more plants this year than last year. Last year he had p plants. If p = 3, how many plants does he have this year? Words Variable Expression 5 more plants than last year Let p represent the number of plants last year. 5 + p

Example p Write the expression. Use 1 cup and 5 counters to represent 5 + p Replace p with 3. Place 3 counters in the cup. 8 Add 5 and 3. There is a total of 8 counters. Answer: So, Tyler has 8 plants this year. Write and Evaluate Expressions

1.A 2.B 3.C 4.D Example 3 A.11 cats B.9 cats C.7 cats D.4 cats At Yiro’s pet store, he has 7 more cats than he had last year. Last year he had c cats. If c = 4, how many cats does Yiro have this year?

End of the Lesson End Lesson

Resources Five-Minute Check (over Lesson 4–8) Image Bank Math Tool Chest Multiplication Expressions

1.A 2.B 3.C 4.D Five Minute Check 1 (over Lesson 4–8) Use any strategy to solve. There are 40 children riding 12 cars and motorcycles at the carnival. Motorcycles hold 2 children and cars hold 4. How many motorcycles and cars are there? A.There are 8 cars and 4 motorcycles. B.There are 7 cars and 3 motorcycles. C.There are 9 cars and 1 motorcycle. D.There are 8 cars and 5 motorcycles.

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