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Lesson 1-3 Example 4 1-3 Solve. BOOKS Khadijah’s book weighs 900 grams. How many milligrams does the book weigh? Understand Read the question. Write what you know. The book weighs 900 grams.

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Lesson 1-3 Example 4 1-3 Plan Pick a strategy. One strategy is to solve a simpler problem. Work with 100, and then multiply your answer by 9 to find the total milligrams in the book. 1000 milligrams is equal to 1 gram.

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Lesson 1-3 Example 4 1-3 Solve You are converting from grams to milligrams, so you need to multiply. 100 grams x 1,000 = 100,000 milligrams 100,000 milligrams × 9 = 900,000 total milligrams Khadijah’s book weighs 900,000 milligrams.

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Lesson 1-3 Example 4 1-3 Check A milligram is a smaller unit of measure than a gram, so the number of milligrams should be greater than the number of grams.

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