Not only maths but some fascinating population facts thrown in as well. Why not try to find these South American countries whilst rounding their populations to the nearest million?
When rounding to the nearest whole million it is the hundred thousand digit which is important.
2 345 456 is 2 000 000 (two million) to the nearest million
2 987 654 is 3 000 000 (three million) to the nearest million.
If the hundred thousand digit is 5 or more round up. Otherwise round down.
Free Y6 maths worksheet: Rounding to the nearest million (pg 3)
Free Y6 maths worksheet: Approximate answers by rounding (pg 1)