Afamily of two adults and three children went out to dinner the total bill was $42 each child center cost four dollars how much did each adult dinner cost

4 x 3 = 12

42 - 12 = 30

30 / 2 = 15

15$ an adult dinner

Rounding decimals is very similar to rounding other numbers. if the hundredths and thousandths places of a decimal is forty-nine or less, they are dropped and the tenths place does not change. for example, rounding 0.843 to the nearest tenth would give 0.8. , your welcome !