Foundation January 2019 Paper 1 Q18
18 The table shows the volumes, in km³, of four oceans.
| Ocean | Volume (km³) |
|---|---|
| Arctic Ocean | \(1.88 \times 10^7\) |
| Atlantic Ocean | \(3.10 \times 10^8\) |
| Indian Ocean | \(2.64 \times 10^8\) |
| Southern Ocean | \(7.18 \times 10^7\) |
(a) Write \(7.18 \times 10^7\) as an ordinary number. (1)
(b) Calculate the total volume of these four oceans. (2)
The volume of the South China Sea is 9 880 000 km³
(c) Write 9 880 000 in standard form. (1)
| Scheme | Marks |
|---|---|
| 71 800 000 | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| Eg \(1.88 \times 10^7 + 3.10 \times 10^8 + 2.64 \times 10^8 + 7.18 \times 10^7\) or 18 800 000 + 310 000 000 + 264 000 000 + 71 800 000 with at least 3 numbers correct | M1 |
| \(6.646 \times 10^8\) oe | A1 |
| (2) |
Notes
M1: for a complete method or for digits 6646
A1: for \(6.646 \times 10^8\) oe eg 664 600 000
| Scheme | Marks |
|---|---|
| \(9.88 \times 10^6\) | B1 |
| (1) | |
| (4 marks) |