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Practise

Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

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12 questions

SA-4024-NU-0062 marksL1 FoundationCalculatorBounds
A length is 8.48.4 cm, correct to 1 decimal place. Write down its lower bound and its upper bound.

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Salam Academy Original Practice · Proposed mark scheme
SA-4024-NU4-0021 markL1 FoundationCalculatorBounds
The number of people at a concert is 250250, correct to the nearest 1010. Write down the lower bound.

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Salam Academy Original Practice · Proposed mark scheme
SA-4024-NU8-0011 markL1 FoundationNon-calculatorRounding & estimating
Round 0.0063720.006372 to 22 significant figures.

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Salam Academy Original Practice · Proposed mark scheme
SA-4024-NU8-0021 markL1 FoundationNon-calculatorRounding & estimating
Round 48 76248\,762 to 33 significant figures.

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Salam Academy Original Practice · Proposed mark scheme
SA-4024-NU8-0031 markL1 FoundationNon-calculatorRounding & estimating
Round 3.141593.14159 to 33 decimal places.

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Salam Academy Original Practice · Proposed mark scheme
SA-4024-NU8-0051 markL1 FoundationNon-calculatorBounds
A mass is 66 kg, correct to the nearest kilogram. Write down its upper bound.

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Salam Academy Original Practice · Proposed mark scheme
SA-4024-NU-0072 marksL2 StandardCalculatorBounds
A rectangle measures 1212 cm by 77 cm, both correct to the nearest centimetre. Calculate the upper bound of its area.

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Salam Academy Original Practice · Proposed mark scheme
SA-4024-NU-0142 marksL2 StandardNon-calculatorRounding & estimating
By rounding each number to 1 significant figure, estimate the value of 49.7×3.120.198\dfrac{49.7\times3.12}{0.198}.

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Salam Academy Original Practice · Proposed mark scheme
SA-4024-NU8-0042 marksL2 StandardNon-calculatorRounding & estimating
By rounding each number to 11 significant figure, estimate 48.7×9.8\sqrt{48.7}\times9.8.

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Salam Academy Original Practice · Proposed mark scheme
SA-4024-NU8-0062 marksL2 StandardNon-calculatorBounds
a=20a=20 correct to the nearest whole number and b=7.4b=7.4 correct to 11 decimal place. Find the lower bound of a−ba-b.

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Salam Academy Original Practice · Proposed mark scheme
SA-4024-NU8-0072 marksL2 StandardCalculatorBounds
p=12p=12 and q=4q=4, both correct to the nearest whole number. Find the lower bound of pq\dfrac pq, to 3 significant figures.

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Salam Academy Original Practice · Proposed mark scheme
SA-4024-NU-0174 marksL4 ChallengingCalculatorBounds
A runner covers 120120 m, measured to the nearest 1010 m, in 15.015.0 s, measured to the nearest 0.10.1 s. Calculate the upper bound of the runner's average speed, giving your answer to 3 significant figures.

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Salam Academy Original Practice · Proposed mark scheme