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Exam-Style Questions.Problems adapted from questions set for previous Mathematics exams. |
1. | GCSE Higher |
(a) Write 0.0000657 in standard form.
(b) Write 2.371 × 104 as an ordinary number.
2. | GCSE Higher |
The number 1.25 × 10n is a cube number.
Find the smallest possible integer value of n.
3. | GCSE Higher |
At a particular time the distance between Earth and Mercury was \(7.7 \times 10^7\) km.
A signal was sent from Earth to Mercury travelling at an estimated speed of \(3 \times 10^5\) km per second.
(a) how long did the signal take to get to Mercury?
The speed of the signal sent from Earth to Mercury was actually less than \(3 \times 10^5\) km per second.
(b) How will this affect your answer to part (a)?
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