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Customary Units of Weight Conversion | Lesson 11–2

Learn how to convert customary units of weight, from ounces to tons, and vice versa. Practice converting larger units to smaller units. Develop a strong understanding of parts of units and conversion calculations.

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Customary Units of Weight Conversion | Lesson 11–2

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  1. Splash Screen

  2. Five-Minute Check (over Lesson 11–2) Main Idea and Vocabulary Key Concept: Customary Units of Weight Example 1: Convert Larger Units to Smaller Units Example 2: Parts of Units Example 3: Convert Smaller Units to Larger Units Example 4: Parts of Units Lesson Menu

  3. I will convert customary units of weight. • ounce • ton • weight • pound Main Idea/Vocabulary

  4. KC

  5. 2 T = lb Convert Larger Units to Smaller Units Refer to the information in the Key Concept: Customary Units of Weight. A truck weighs about 2 tons. How many pounds does the truck weigh? Larger units (tons) are being converted to smaller units (pounds). Since 1 ton (T) = 2,000 pounds, multiply 2 by 2,000. Answer: So, the truck weighs 2 × 2,000 or 4,000 pounds. Example 1

  6. A B C D A community recycled 3 tons of cans. How many pounds did the community recycle? • 2,000 lb • 4,000 lb • 6,000 lb • 8,000 lb Example 1

  7. Pravit needs 4 pounds of carrots to feed his rabbits. How many ounces of carrots does he need? 3 4 Since 4 pounds means 4 pounds + pound, convert each to ounces. Then add. 3 3 4 4 Parts of Units Example 2

  8. Answer: So, 4 pounds = 16 + 16 + 16 + 16 + 12 or 76 ounces. Pravit needs 76 ounces of carrots to feed his rabbits. 3 4 3 1 lb = 16 oz, lb = 12 oz 4 Parts of Units Example 2

  9. A B C D Pax feeds his dogs 8 pounds of food a day. How many ounces is this? 1 2 • 136 ounces • 132 ounces • 130 ounces • 128 ounces Example 2

  10. 128 oz = lb Convert Smaller Units to Larger Units Convert 128 ounces to pounds. Smaller units (ounces) are being converted to larger units (pounds). Since 16 ounces = 1 pound, divide 128 by 16. 128 ÷ 16 = 8 Answer: So, 128 ounces = 8 pounds. Example 3

  11. A B C D Convert 160 ounces to pounds. • 11 pounds • 10 pounds • 9 pounds • 8 pounds Example 3

  12. Complete: 6,500 lb = T Parts of Units Since you are converting a smaller unit to a larger unit, divide. 6,500 ÷ 2,000 = 3 R500 Example 4

  13. 500 2,000 1 Answer: So, 6,500 lb = 3 T 500 lb or 3 T. 1 The fraction of a ton is or . 4 4 Parts of Units The remainder 500 means there are 500 pounds out of a ton left over. Example 4

  14. A B C D Complete: 9,000 lb = T 1 A. 3 2 1 C. 4 4 1 D. 4 2 B. 4 Example 4

  15. End of the Lesson End Lesson

  16. Five-Minute Check (over Lesson 11–2) Image Bank Math Tool Chest Measure with a Ruler Resources

  17. A B C D (over Lesson 11–2) Solve. Use the draw a diagram strategy. Jay walks north 3 blocks; turns right and walks 2 blocks; turns right and walks 4 blocks; then turns right and walks 2 blocks. Where is Jay in relationship to where he started? • 1 block north of his starting point • 2 blocks north of his starting point • 1 block south of his starting point • 2 blocks south of his starting point Five Minute Check 1

  18. A B C D (over Lesson 11–2) Solve. Use the draw a diagram strategy. What is the perimeter of a square pool with an area of 400 ft2? • 160 feet • 200 feet • 100 feet • 80 feet Five Minute Check 2

  19. End of Custom Shows

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