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Math Gr 8 Ch 3: Calculation Techniques

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32 Questions

What is the concept of equivalent fractions?

Fractions that represent the same value even though they may look different.

What is the formula to add two fractions with different denominators?

(a × d + b × c) / (b × d)

What is the formula to multiply two fractions?

(a × c) / (b × d)

How do you divide by a fraction?

Multiply by the reciprocal of the fraction.

What is the formula to find a fraction of a fraction?

(a × c) / (b × d)

How do you simplify a fraction?

Divide both the numerator and denominator by their greatest common divisor (GCD).

How do you convert a fraction to a decimal?

Divide the numerator by the denominator.

What is the last step to convert a fraction to a percentage?

Multiply the decimal by 100.

What is the result of multiplying the numerator and denominator of a fraction by the same number?

An equivalent fraction

What is the least common multiple of the denominators used for when adding or subtracting fractions?

To find a common denominator

What is the result of dividing a fraction by its reciprocal?

The original fraction

What is the greatest common divisor used for when simplifying a fraction?

To divide both the numerator and denominator

What is the process of finding a fraction of a fraction?

Multiplying the fractions

What is the result of converting a fraction to a decimal?

A decimal value

What is the final step in converting a fraction to a percentage?

Multiplying by 100

What is the purpose of finding the least common multiple when adding or subtracting fractions?

To find a common denominator

If (\frac{2}{3}) is equivalent to (\frac{a}{b}), what is the value of (a+b)?

6

What is the result of (\frac{1}{2} + \frac{1}{3})?

(\frac{5}{6})

What is the result of (\frac{2}{3} \times \frac{3}{4})?

(\frac{1}{2})

What is the result of (\frac{3}{4} \div \frac{2}{3})?

(\frac{3}{2})

What is the result of (\frac{2}{3} \times \frac{3}{4})?

(\frac{1}{2})

What is the simplified form of (\frac{12}{18})?

(\frac{2}{3})

What is the decimal equivalent of (\frac{3}{4})?

0.75

What is the percentage equivalent of (\frac{2}{5})?

40%

What is the result of multiplying the numerator and denominator of the fraction 3/4 by 2?

6/4

What is the first step in adding the fractions 2/3 and 1/4?

Find the least common multiple of the denominators

What is the result of dividing 3/4 by 2/3?

9/8

What is the result of finding 1/2 of 3/4?

3/8

What is the simplified form of the fraction 12/20?

3/5

What is the decimal equivalent of the fraction 2/5?

0.4

What is the percentage equivalent of the fraction 1/4?

20%

What is the result of adding the fractions 1/2 and 1/3?

3/5

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