When you do an approximate calculation, do you always round numbers to the nearest 10? You can do, but when you multiply, your estimation might not be as close as it could be.
Which is the best estimation for 4 × 26?
When you do an approximate calculation, do you always round numbers to the nearest 10? You can do, but when you multiply, your estimation might not be as close as it could be.
Which is the best estimation for 4 × 26?
