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Variable
| Question | Answer |
|---|---|
| There are s fish on the continental shelf. If 25 more fish arrive, write an expression for the total number of fish. | s + 25 |
| There are c crabs on the continental shelf. 10 leave, and the remaining crabs are split into 5 equal groups. Write an expression for each group. | (c − 10) ÷ 5 |
| A scientist observes a animals on the abyssal plain each day for 4 days. Write an expression for the total number observed. | 4a |
| A scientist studies a animals each day for 5 days. Then 40 animals leave the area. Write an expression for how many animals remain. | 5a − 40 |
| A robot explores x meters of a trench each hour. Write an expression for how far it travels in 5 hours. | 5x |
| There are k bacteria in one area of the continental rise and 3 times as many in another area. Write an expression for the second area. | 3k |
| A researcher studies p fish each hour for 6 hours along the continental slope. Write an expression for the total fish studied. | 6p |
| There are s fish on the continental shelf. 20 more fish arrive, and then the total is divided equally into 4 groups. Write an expression for the number of fish in each group. | (s + 20) ÷ 4 |
| The continental slope is 3,000 meters deep. Write an expression to show how much deeper it is than the continental shelf, which is s meters deep. | 3000 − s |
| A robot explores r meters of ocean each hour. Write an expression for how far it travels in 6 hours. | 6r |
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