755 prompts matching "Practice: Turning a minor into a cofactor with the sign rule"
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Adding and subtracting like surds
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Adding surds that need simplifying first
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Expanding a binomial surd bracket
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Surd answers in area and perimeter questions
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Distinguishing rational and irrational numbers
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Surds in trigonometric exact values
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Explaining why we rationalise denominators
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Surd equation from a geometry context
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Simplifying a surd expression before squaring
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Union and intersection of two number sets
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Drawing a two-set Venn diagram from data
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Finding a missing intersection from set sizes
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Set-builder notation basics
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Proper subsets versus subsets
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Set difference A minus B
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Working backwards from Venn diagram totals
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Finite and infinite sets
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Empty set and its notation
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Number of elements in a set from a Venn diagram region count
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Set operations exam question, multi-part
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