10, 100 and 1000; the kilometre; multiplying round numbers
Answers are for parents and teachers.
1
40 × 6 = ?
240
2
500 × 4 = ?
2000
3
60 × 30 = ?
1800
4
x × 100 = 800, x = ?
8
5
Athletes ran 2 km. How many metres is that?
2000
6
One box holds 50 pencils. How many pencils are in 20 such boxes?
1000