1,304 prompts matching "WAEC exam prep: Casting out nines as a check on a calculation"
Practice set: Average speed over a whole journey
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Spot my mistake: Adding and subtracting surds
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Quiz: Finding an unknown quantity using direct proportion
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Practice set: Finding an unknown quantity from an inverse proportion
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Quiz: The gradient of a line from two given points
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Practice set: The length of a line segment from its endpoints
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Spot my mistake: The equation of a line from its gradient and one point
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Quiz: Understanding the probability scale from 0 to 1
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Practice set: Calculating the probability of a single event
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Find my error: Dividing one binary number by another
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Extra quiz: Evaluating an expression in which a zero index appears
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More practice: The reciprocal (negative index) law of indices
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Extra quiz: Writing a very small number in standard form
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More practice: Using standard form to represent very small
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Extra quiz: Finding a cube root using logarithms
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More practice: Locating the decimal point correctly after using logarithm tables
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Find my error: Simplifying a ratio whose parts are given in different units
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More practice: Dividing a quantity into a given proportion
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Extra quiz: Finding the rate or the time from a given interest
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More practice: Finding the principal, rate or time
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