Understanding Fractions

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Questions and Answers

What is the total distance Roitwalk travels in a day?

  • 9 km (correct)
  • 5 km
  • 4 km
  • 3 km

What is the least common multiple (LCM) of 5 and 7?

  • 12
  • 15
  • 35 (correct)
  • 42

What happens when you subtract 0 from a fraction?

  • The fraction remains the same (correct)
  • The fraction is eliminated
  • The value becomes negative
  • The fraction increases in value

In addition, how is the order of the terms impacted?

<p>It can be changed (A)</p> Signup and view all the answers

Which statement regarding Preeti and Roitwalk's purchases is true?

<p>Preeti bought more ribbon than Roitwalk (C)</p> Signup and view all the answers

If two fractions are equivalent, what can be said about their numerators and denominators?

<p>They are proportional. (A)</p> Signup and view all the answers

What is the highest common factor (HCF) of 15 and 20?

<p>5 (D)</p> Signup and view all the answers

What is the total length of Maya's red and green ribbons combined?

<p>7 m (D)</p> Signup and view all the answers

Which of the following pairs of numbers can form equivalent fractions through division?

<p>10 and 20 (A)</p> Signup and view all the answers

What is the weight of the other book if the combined weight of two books is 3.4 kg and one book weighs 1 kg?

<p>2.4 kg (B)</p> Signup and view all the answers

What is the result of subtracting the fraction 1/21 from 5/13?

<p>10/273 (C)</p> Signup and view all the answers

What is the result when you add the fractions 3/10 and 7/10?

<p>1 (C)</p> Signup and view all the answers

What is the total length of cloth purchased by Nina and Rajan?

<p>54 meters (D)</p> Signup and view all the answers

How many meters more cloth did Rajan buy compared to Nina?

<p>2 m (C)</p> Signup and view all the answers

If you subtract the sum of 3 and 23 from the sum of 24 and 53, what is the result?

<p>7 (B)</p> Signup and view all the answers

What is the first step in reducing a fraction to its lowest terms?

<p>Divide both the numerator and denominator by their common factors (B)</p> Signup and view all the answers

Which pair of numbers are considered coprime?

<p>5 and 9 (A)</p> Signup and view all the answers

What does the term 'improper fraction' refer to?

<p>A fraction where the numerator is greater than or equal to the denominator (A)</p> Signup and view all the answers

What is a common factor of 24 and 36?

<p>12 (A), 6 (C)</p> Signup and view all the answers

When the fraction $\frac{13}{24}$ is reduced, what is its lowest term?

<p>$\frac{13}{24}$ (B)</p> Signup and view all the answers

What is the result of reducing the fraction $\frac{36}{42}$ to its lowest terms?

<p>$\frac{3}{7}$ (C)</p> Signup and view all the answers

Which calculation correctly reduces the fraction $\frac{24}{36}$ to its lowest terms?

<p>$\frac{2}{3}$ (D)</p> Signup and view all the answers

Which of the following is a mixed fraction representation of the improper fraction $\frac{13}{6}$?

<p>2 $\frac{1}{6}$ (A)</p> Signup and view all the answers

What is the first step in adding mixed fractions?

<p>Convert the mixed fractions into improper fractions. (C)</p> Signup and view all the answers

In the example provided, what is the LCM of 8, 3, and 12 used for?

<p>To find the least common denominator for addition or subtraction. (A)</p> Signup and view all the answers

When subtracting mixed fractions, what must you do if the first fraction is smaller than the second?

<p>Borrow from the whole number part of the first fraction. (C)</p> Signup and view all the answers

After finding the LCM for adding or subtracting fractions, what is the next step?

<p>Multiply each fraction by the necessary factors to ensure they have the same denominator. (D)</p> Signup and view all the answers

In the calculation of $2 \frac{3}{8} + \frac{2}{12}$, which factor should be used to convert to a common denominator?

<p>24 (A)</p> Signup and view all the answers

What is the result of subtracting $1 \frac{5}{7} - \frac{4}{7}$?

<p>$\frac{1}{7}$ (C)</p> Signup and view all the answers

What does converting improper fractions back to mixed fractions allow you to do?

<p>Present the result in a more understandable format. (B)</p> Signup and view all the answers

What is the mixed fraction equivalent of the improper fraction $\frac{31}{12}$?

<p>$2 \frac{7}{12}$ (C)</p> Signup and view all the answers

What is the simplest form of the fraction 28?

<p>14/1 (D)</p> Signup and view all the answers

When comparing the fractions 12/7 and 12/5, which fraction is greater?

<p>12/5 (C)</p> Signup and view all the answers

Which fraction is expressed in the lowest terms: 38/64?

<p>19/32 (A)</p> Signup and view all the answers

Which of the following statements is true for fractions with the same denominators?

<p>The fraction with the larger numerator is greater. (B)</p> Signup and view all the answers

Which fraction represents a smaller value: 38/12 or 28/64?

<p>28/64 (B)</p> Signup and view all the answers

What is the greatest common factor of 92 and 19?

<p>19 (D)</p> Signup and view all the answers

How would you arrange the numbers 2, 7, 4 in descending order?

<p>7, 4, 2 (A)</p> Signup and view all the answers

If two fractions have the same numerator, what determines which one is greater?

<p>The smaller denominator. (D)</p> Signup and view all the answers

Flashcards

Equivalent Fractions

Fractions that represent the same part of a whole, despite having different numerators and denominators.

Simplifying Fractions

Expressing a fraction in its lowest terms (where the numerator and denominator have no common factors other than 1).

Greatest Common Factor (GCF)

The largest number that divides evenly into two or more numbers without leaving a remainder.

Finding equivalent fractions

Creating new fractions that represent the same portion by multiplying the numerator and denominator by the same non-zero number.

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Adding and subtracting fractions (with the same denominator)

Add or subtract the numerators, keeping the denominator the same.

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Reducing a fraction to lowest terms

Finding the simplest form of a fraction by dividing both the numerator and denominator by their greatest common factor (GCF).

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Improper fraction

A fraction where the numerator is greater than or equal to the denominator.

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Mixed fraction

A number with a whole number part and a fractional part.

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Common factors

Numbers that evenly divide both the numerator and the denominator of a fraction.

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Lowest terms

The simplest form of a fraction , where the numerator and denominator have no common factors other than 1.

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Comparing Fractions (Same Denominator)

When fractions have the same denominator, the fraction with the larger numerator is the greater fraction.

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Comparing Fractions (Same Numerator)

When fractions have the same numerator, the fraction with the smaller denominator is the greater fraction.

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Ascending Order

Arranging numbers from smallest to largest.

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Descending Order

Arranging numbers from largest to smallest.

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Comparing Like Fractions

Comparing fractions that share the same denominator.

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Comparing Unlike Fractions

Comparing fractions with different denominators.

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Adding Mixed Numbers

To add mixed numbers, convert them into improper fractions, find a common denominator if necessary, add the numerators, simplify the result, and convert back to a mixed number if possible.

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Subtracting Mixed Numbers

To subtract mixed numbers, convert them to improper fractions, find a common denominator if necessary, subtract the numerators, simplify the result, and convert back to a mixed number if possible.

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Mixed Number

A number with a whole number part and a fractional part.

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Converting Mixed to Improper

Multiply the whole number by the denominator, add the numerator, and keep the same denominator.

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Converting Improper to Mixed

Divide the numerator by the denominator, the quotient becomes the whole number, the remainder becomes the numerator, and the denominator stays the same.

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Common Denominator

The same denominator for two or more fractions, allowing them to be added or subtracted.

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Borrowing

When subtracting fractions, if the numerator of the first fraction is smaller than the second, borrow one whole from the whole number part, convert it to a fraction with the same denominator, and add it to the first fraction.

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Commutative Property of Addition

In adding fractions, the order of the numbers does not affect the final sum.

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Subtracting 0 from a fraction

When you subtract 0 from any fraction, the result is the same fraction.

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Adding 0 to a fraction

When you add 0 to any fraction, the result is the same fraction.

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Is subtraction of fractions commutative?

No, the order of the numbers in subtraction of fractions matters. The result changes if you switch the order.

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Adding fractions with the same denominator

Add the numerators of the fractions while keeping the denominator the same.

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Adding numbers

Combining two or more numbers to find their total sum.

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Subtracting numbers

Finding the difference between two numbers by taking away the smaller number from the larger one.

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Finding the total length

Adding the lengths of multiple objects to find the combined length.

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Finding the difference in length

Subtracting the smaller length from the larger length to find the difference between two objects.

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Finding the weight of the other book

Subtracting the weight of one book from the total weight of two books to find the weight of the remaining book.

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Study Notes

Fractions

  • A fraction represents a part or parts of a whole.
  • A fraction is in the form numerator/denominator, where the denominator is not zero

Types of Fractions

  • Like Fractions: Fractions with the same denominators
  • Unlike Fractions: Fractions with different denominators
  • Unit Fractions: Fractions where the numerator is 1
  • Proper Fractions: Fractions where the numerator is less than the denominator
  • Improper Fractions: Fractions where the numerator is greater than or equal to the denominator

Equivalent Fractions

  • Equivalent fractions have the same value but represent different portions of a whole.
  • Equivalent fractions can be created by multiplying (or dividing) both the numerator and denominator by the same number.

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