malone.ronald21
malone.ronald21 2d ago โ€ข 0 views

Real-World Examples of Rational Number Operations in Daily Life

Hey there! ๐Ÿ‘‹ Ever wondered how those math problems with fractions and decimals actually show up in your day-to-day life? ๐Ÿค” Let's explore some cool, real-world examples where understanding rational number operations can be super handy! ๐Ÿ˜Ž
๐Ÿงฎ Mathematics

1 Answers

โœ… Best Answer

๐Ÿ“š Quick Study Guide

  • ๐Ÿ”ข A rational number can be expressed as a fraction $\frac{p}{q}$, where $p$ and $q$ are integers and $q \neq 0$.
  • โž• Addition/Subtraction: To add/subtract rational numbers, find a common denominator. $\frac{a}{c} + \frac{b}{c} = \frac{a+b}{c}$
  • โœ–๏ธ Multiplication: Multiply the numerators and the denominators. $\frac{a}{b} \times \frac{c}{d} = \frac{ac}{bd}$
  • โž— Division: Multiply by the reciprocal of the divisor. $\frac{a}{b} \div \frac{c}{d} = \frac{a}{b} \times \frac{d}{c} = \frac{ad}{bc}$
  • โš–๏ธ Decimals: Rational numbers can also be expressed as terminating or repeating decimals.

๐Ÿงช Practice Quiz

  1. Question 1: You are baking a cake and the recipe calls for $\frac{2}{3}$ cup of flour. You only want to make half the recipe. How much flour do you need?
    1. $\frac{1}{6}$ cup
    2. $\frac{1}{3}$ cup
    3. $\frac{1}{2}$ cup
    4. $\frac{5}{6}$ cup
  2. Question 2: A pizza is cut into 8 slices. You eat 3 slices, and your friend eats 2 slices. What fraction of the pizza did you and your friend eat together?
    1. $\frac{1}{8}$
    2. $\frac{5}{8}$
    3. $\frac{3}{8}$
    4. $\frac{1}{2}$
  3. Question 3: You have $20 and want to spend no more than $\frac{3}{4}$ of it. What is the maximum amount of money you can spend?
    1. $5
    2. $10
    3. $15
    4. $25
  4. Question 4: You walk $\frac{2}{5}$ of a mile to the store and then $\frac{1}{3}$ of a mile to a friend's house. How far did you walk in total?
    1. $\frac{2}{15}$ mile
    2. $\frac{3}{8}$ mile
    3. $\frac{11}{15}$ mile
    4. $\frac{1}{4}$ mile
  5. Question 5: A shirt is on sale for 25% off. If the original price was $32, what is the sale price?
    1. $24
    2. $8
    3. $28
    4. $40
  6. Question 6: You have 2.5 liters of juice and want to pour it into glasses that hold 0.25 liters each. How many glasses can you fill?
    1. 5
    2. 10
    3. 12
    4. 8
  7. Question 7: You are mixing paint. You need $\frac{1}{2}$ can of blue paint and $\frac{1}{3}$ can of yellow paint. How much more blue paint do you need than yellow paint?
    1. $\frac{1}{6}$ can
    2. $\frac{2}{5}$ can
    3. $\frac{5}{6}$ can
    4. $\frac{1}{2}$ can
Click to see Answers
  1. B
  2. B
  3. C
  4. C
  5. A
  6. B
  7. A

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