It is 740.
Most schools wrongly teach you to always round 5 up (so the answer would be 750) but, while this is a simple rule to teach, it is not really correct. Under this rule:
• if the following digit is 0 you don't round;
• if the following digit is 1, 2, 3 or 4 you round down; and
• if the following digit is 5, 6, 7, 8 or 9 you round up.
As a result you are more likely to round up than round down and that introduces an upward bias into your calculations.
The IEEE (Institute of Electronic and Electrical Engineers) standard 754 is to round 5 up or down so that the new last digit is even. See link for more: //en.wikipedia.org/wiki/Rounding#Round_half_to_even
10 because 8 is to small to have this and 10 is the first ten there is
10
Rounded to the nearest ten it is 10 but rounded to the nearest tenth it is 12.6
10
70
740
740
745.00
8 is already rounded to the nearest 10th. Rounded to the nearest 10 is 10.
149,100,000, rounded to the nearest 10 million = 150,000,000149,100,000, rounded to the nearest 10 million = 150,000,000149,100,000, rounded to the nearest 10 million = 150,000,000149,100,000, rounded to the nearest 10 million = 150,000,000
10 because 8 is to small to have this and 10 is the first ten there is
10
Rounded to the nearest ten it is 10 but rounded to the nearest tenth it is 12.6
10
6799 rounded to the nearest 10 = 6800
70
37 rounded to the nearest 10 is 40.