Multiplication and Division (Grade 12 NSC Matric Mathematics): Quizzes

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Multiplication and Division
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What is the result when a negative number is multiplied by another negative number?

Positive

When multiplying two numbers with different signs, what is the result?

Negative

What is the result of (−5)×3(-5) \times 3?

−15-15

When dividing by a fraction, what operation should you use instead?

Multiply by its reciprocal

What is 6x7y×35z\frac{6x}{7y} \times \frac{3}{5z}?

18x35yz\frac{18x}{35yz}

What is the first step when dividing 6x8y÷312z\frac{6x}{8y} \div \frac{3}{12z}?

Rewrite as 6x8y×12z3\frac{6x}{8y} \times \frac{12z}{3}

What does the distributive law state?

a(b+c)=ab+aca(b + c) = ab + ac

What is −3x×(−6y)-3x \times (-6y) in the expansion of −3x(5x−6y)-3x(5x - 6y)?

+18xy+18xy

What does FOIL stand for when expanding two brackets?

First, Outer, Inner, Last

In (2x+y)(3x−2y)(2x + y)(3x - 2y), which terms are multiplied for the 'Outer' step?

2x2x and −2y-2y

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