Higher June 2023 Paper 1 Q12
12
(a) \(a \times 10^n\) is a number in standard form.
Complete the inequality for the value of \(a\). [1 mark]
\(\underline{\qquad\qquad} \leqslant a \lt \underline{\qquad\qquad}\)
(b) \(b \times 10^n\) is the number 7200 written in standard form.
Work out \(\quad b \times 10^{-n}\)
Write your answer as an ordinary number. [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(1 \leqslant a \lt 10\) | B1 | allow 1.0 etc |
Additional guidance
Accept \(9.\dot{9}\) for 10
| Answer | Mark | Comments |
|---|---|---|
| 0.0072 | B2 | B1 \(7.2 \times 10^3\) or \(7.2 \times 10^{-3}\) ignore extra 0s which don’t affect the value |
Additional guidance
| 0.0072 in working with \(7.2 \times 10^{-3}\) on the answer line | B1 |