Foundation June 2022 Paper 1 Q18
18 Work out \(80\,000\,000 \div 200\)
Give your answer in standard form. [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(4 \times 10^5\) | B2 | B1 400 000 oe correct answer not in standard form eg \(40 \times 10^4\) or \(8 \times 10^7\) or \(2 \times 10^2\) or \(8 \times 10^5 \div 2\) or \(4 \times 10^7 \div 100\) or any value seen and then correctly converted to standard form eg 4 000 000 and \(4 \times 10^6\) 40 000 and \(4 \times 10^4\) |
Additional guidance
| Ignore incorrect position of commas or spacing in long numbers | |
| Condone 400 000 and \(4 \times 10^5\) on the answer line, in either order Condone 40 000 and \(4 \times 10^4\) on the answer line, in either order | B2 B1 |
| 400 000 only on the answer line | B1 |
| Do not award both marks for the correct answer from incorrect working but B1 can be awarded for one or both numbers incorrectly converted to standard form and the result of their division given correctly in standard form | |
| eg \((8 \times 10^8) \div (2 \times 10^3) = 4 \times 10^5\) | B1 |
| eg \((0.8 \times 10^7) \div (2 \times 10^3) = 4 \times 10^5\) | B0 |
| Condone a decimal point and any number of zeros after 4 eg \(4.00000 \times 10^5\) | B2 |
| \(8 \times 10^7\) is implied by \((8 \div 2) \times (10^7 \div 10^a)\) or condone \((8 \div 2) \times (10^7 \times 10^a)\) | B1 |
| \(2 \times 10^2\) is implied by \((8 \div 2) \times (10^b \div 10^2)\) or condone \((8 \div 2) \times (10^b \times 10^2)\) | B1 |