Porcentagem Básica
5 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Um carro custa R$ 25.000. O preço aumenta 12%. Qual é o novo preço do carro?

  • R$ 3.000
  • R$ 2.500
  • R$ 28.000 (correct)
  • R$ 27.000
  • Uma televisão está à venda por R$ 1.200, com um desconto de 25%. Qual é o valor do desconto?

  • R$ 150
  • R$ 450
  • R$ 900
  • R$ 300 (correct)
  • Um smartphone custa R$ 1.800. Seu preço cai 10% devido a uma promoção. Qual é o novo preço do smartphone?

  • R$ 1.700
  • R$ 1.620 (correct)
  • R$ 1.980
  • R$ 1.500
  • Uma loja oferece um desconto fixo de R$ 50 em todos os produtos. Se um vestido custa R$ 200, qual é o preço final após o desconto?

    <p>R$ 150</p> Signup and view all the answers

    Um computador custa R$ 3.500. A loja oferece um desconto de 15% para compras à vista. Qual é o valor do desconto?

    <p>R$ 525</p> Signup and view all the answers

    Study Notes

    Percentage Basics

    • A percentage is a fraction with a denominator of 100.
    • It represents a proportion of a whole as a decimal multiplier.

    Percentage Increase

    • A percentage increase is a change that results in a value greater than the original value.
    • Formula: New Value = Original Value + (Original Value x Percentage Increase)
    • Example: If a shirt costs 50anditspriceincreasesby2050 and its price increases by 20%, the new price is 50anditspriceincreasesby2050 + (50x0.20)=50 x 0.20) = 50x0.20)=60

    Percentage Decrease

    • A percentage decrease is a change that results in a value less than the original value.
    • Formula: New Value = Original Value - (Original Value x Percentage Decrease)
    • Example: If a book costs 80anditspricedecreasesby1580 and its price decreases by 15%, the new price is 80anditspricedecreasesby1580 - (80x0.15)=80 x 0.15) = 80x0.15)=68

    Discount

    • A discount is a reduction in the original price of an item.
    • Formula: Sale Price = Original Price - (Original Price x Discount Percentage)
    • Example: If a TV costs 1,000andhasa101,000 and has a 10% discount, the sale price is 1,000andhasa101,000 - (1,000x0.10)=1,000 x 0.10) = 1,000x0.10)=900
    • Types of discounts:
      • Fixed discount: a fixed amount is subtracted from the original price.
      • Percentage discount: a percentage of the original price is subtracted.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Aprenda conceitos básicos de porcentagem, incluindo aumento e redução de porcentagem, fórmulas e exemplos.

    More Like This

    Profit Calculation and Increase
    5 questions
    Percentage Calculations
    15 questions

    Percentage Calculations

    UncomplicatedCurium avatar
    UncomplicatedCurium
    CBSE Math Chapter: Comparing Quantities
    5 questions
    Use Quizgecko on...
    Browser
    Browser