Aritmatika Sosial - Bruto, Netto dan Tara | Materi - Soal dan Pembahasan | Matematika Kelas 7

m4th-lab
5 Feb 202111:44

Summary

TLDRIn this educational video, Ucu Abdullah explains the concepts of gross, net, and tare weights. Through clear illustrations, he demonstrates how gross weight is the total weight including packaging, net weight is the product's weight alone, and tare weight is the packaging weight. He also explains the mathematical formulas to calculate these values, such as Gross = Net + Tare and Net = Gross - Tare. Using a practical example of fertilizer sacks, Ucu walks viewers through how to apply these formulas, including finding the net weight of a single sack, to reinforce the understanding of these essential concepts in weight measurement.

Takeaways

  • 😀 Gross weight includes both the contents and the packaging or container.
  • 😀 Net weight refers to the weight of the contents alone, excluding packaging.
  • 😀 Tara refers to the weight of the packaging or container without the contents.
  • 😀 The formula for calculating gross weight is: Gross = Net + Tara.
  • 😀 To find net weight, use the formula: Net = Gross - Tara.
  • 😀 Tara can be calculated as a percentage of the gross weight: Tara Percentage = (Tara / Gross) * 100%.
  • 😀 A practical example was given involving fertilizer, with 10 sacks having a gross weight of 700 kg.
  • 😀 To find the gross weight of one sack, divide the total gross weight by the number of sacks (700 kg ÷ 10 = 70 kg).
  • 😀 To find the tare weight, multiply the gross weight of one sack by the tare percentage (3%). This gives a tare weight of 2.1 kg per sack.
  • 😀 The net weight of one sack is found by subtracting the tare weight from the gross weight (70 kg - 2.1 kg = 67.9 kg).
  • 😀 The concepts of gross, net, and tara can also be expressed in terms of percentages to understand their relationship more clearly.

Q & A

  • What is the primary purpose of the video script?

    -The primary purpose of the video is to explain the concepts of 'gross,' 'net,' and 'tare' weights in social arithmetic, using a practical example of fertilizer sacks.

  • What does 'gross' refer to in the context of this lesson?

    -'Gross' refers to the total weight of an item, including both the contents and the packaging. In the example, it's the weight of the basket with bananas.

  • What is meant by 'net' weight?

    -'Net' weight refers to the weight of only the contents, excluding any packaging or container. In the example, it's the weight of the bananas alone.

  • How is 'tare' weight defined?

    -'Tare' weight is the weight of the packaging or container itself, without the contents. In the example, it's the weight of the basket in which the bananas are placed.

  • How are gross, net, and tare weights related mathematically?

    -Gross weight is the sum of net weight and tare weight. Mathematically, Gross = Net + Tare.

  • How do you calculate net weight from gross weight and tare weight?

    -To calculate net weight, subtract the tare weight from the gross weight: Net = Gross - Tare.

  • How can percentages be used in calculating net and tare weights?

    -Percentages can be used to calculate the proportions of net and tare weights relative to the gross weight. For example, the percentage of tare weight can be calculated as (Tare / Gross) * 100%.

  • What is the formula for calculating tare weight using percentages?

    -Tare weight can be calculated by multiplying the gross weight by the tare percentage, then dividing by 100: Tare = (Gross * Tare Percentage) / 100.

  • What does the example with fertilizer sacks demonstrate?

    -The fertilizer sack example demonstrates how to calculate the net weight of a sack by using the gross weight, tare percentage, and mathematical formulas.

  • In the fertilizer sack problem, how is the tare weight for one sack calculated?

    -The tare weight for one sack is calculated by taking the gross weight (70 kg per sack) and multiplying it by the tare percentage (3%), which gives 2.1 kg as the tare weight for one sack.

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Etiquetas Relacionadas
Social ArithmeticGross WeightNet WeightTara WeightMath ConceptsMeasurement BasicsEducational VideoMathematicsLearning ToolFarming ExampleWeight Calculations
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