Final answer:
To divide 4.5 by 0.4, move the decimal point one place to the right for both the divisor and dividend, resulting in a quotient of 11.25.
Step-by-step explanation:
To divide 4.5 by 0.4, we can set up the problem as:
4.5 ÷ 0.4 = ?
To divide a decimal by another decimal, we can move the decimal point of the divisor (0.4) to the right until it becomes a whole number. We also move the decimal point of the dividend (4.5) the same number of places to the right. We continue until the divisor becomes a whole number.
In this case, we need to move the decimal point one place to the right for both the divisor and dividend:
4.5 ÷ 0.4 = 45 ÷ 4 = 11.25
Therefore, the quotient of 4.5 divided by 0.4 is 11.25.