If you were rounding to 90 from 80 you would going by the tens place. In this case in order to jump to 90 the value of 80s one place would need to be 5 or higher.
90
80
80
80 assuming it is rounded to nearest ten (as question does not say) 82 is 2 away from 80 82 is 8 away from 90 2 is smaller than 8 so answer is 80
87.01 rounded to the tens is 90.
80
90 * 80 = 7,200
80% of 90m = 80% * 90 = 0.8 * 90 = 72m
79.6 rounded to the nearest tens is 80. Then, 80 rounded to the nearest ones is 80.
80% of 90 Euros= 80% * 90 Euros= 0.8 * 90 Euros= 72 Euros
The result of the equation - 90 plus 90 plus 60 plus 80, is found as follows; 90 + 90 + 60 + 80 = ( 90 + 90 ) + 60 + 80 = 180 + ( 60 + 80 ) = 180 + 140 = 320 Answer = 320
10