Guessing & Estimating

Gap-Fill Exercise

Fill in all the gaps with a suitable word, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. Note that you will lose points if you ask for hints!

I'd imagine...
Is it something to do with...?
It might be...
It could be...
It can't be...
There's no way it's...
Estimating numbers

more or less
I'm not sure, but I'd estimate...
At a rough guess, I'd say...

Complete the conversations with one of the following words:
rough - do - approximately - less- could - estimate

1. A: What's the world's population?
B: More or seven and a half billion.
2. A: What is philology?
B: I think it's something to with the study of language in texts.
3. A: How many countries are there in the world?
B: I'm not sure, but I'd about 200.
4. A: How many people live in Madrid?
B: At a guess, I'd say 3 million.
5. A: Is 'The Lord of the Rings' the most popular novel of all time?
B: It be. I'm not sure.
6. A: How long can a person survive without eating?
B: I don't know. My guess is thirty days, but it depends on the person.