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Splash Screen

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Lesson Menu Five-Minute Check (over Lesson 1–1) Main Idea Example 1:Problem-Solving Skill

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Main Idea/Vocabulary I will use the four-step plan to solve problems.

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Example 1 Dina’s family went to a zoo. They learned that a roadrunner is 1 foot tall. An African elephant is 12 feet tall. How much taller is an African elephant than a roadrunner?

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Example 1 Understand What facts do you know? The roadrunner is 1 foot tall. The African elephant is 12 feet tall. What do you need to find? You need to find how much taller an African elephant is than the roadrunner.

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Example 1 Plan To find out how much taller the African elephant is than the roadrunner, subtract.

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Example 1 Solve Answer: So, the elephant is 11 feet taller than the roadrunner. 12 1 – 11

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Example 1 Check Since addition and subtraction are inverse operations, you can use addition to check subtraction. So, the answer is correct.

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End of the Lesson End Lesson

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Resources Five-Minute Check (over Lesson 1–1) Image Bank Math Tool Chest Place Value

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1.A 2.B 3.C 4.D Five Minute Check 1 (over Lesson 1–1) A.Add 1; 9 B.Add 2; 6 C.Add 3; 7 D.Subtract 1; 3 Identify the pattern. Then find the missing number. 2, 4, ___, 8

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1.A 2.B 3.C 4.D Five Minute Check 2 (over Lesson 1–1) A.Add 4; 9 B.Add 1; 16 C.Add 5; 20 D.Add 10; 17 Identify the pattern. Then find the missing number. 5, 10, 15, ___, 25

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1.A 2.B 3.C 4.D Five Minute Check 3 (over Lesson 1–1) A.Add 3; 12 B.Subtract 3; 6 C.Subtract 2; 7 D.Add 6; 14 Identify the pattern. Then find the missing number. 6, 9, ___, 15

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1.A 2.B 3.C 4.D Five Minute Check 4 (over Lesson 1–1) A.Add 3; 5, 9 B.Add 2; 14, 18 C.Add 4; 16, 24 D.Subtract 3; 15, 17 Identify the pattern. Then find the missing number. 8, 12, ___, 20, ___

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