Answer:
1.39 is bigger than 1.148. To compare two decimal numbers, we can look at the digits after the decimal point from left to right. The first digit after the decimal point is called the tenths place, the second digit is called the hundredths place, and so on. For example, in 1.39, the 3 is in the tenths place and the 9 is in the hundredths place. In 1.148, the 1 is in the tenths place, the 4 is in the hundredths place, and the 8 is in the thousandths place.
To compare 1.39 and 1.148, we can start by comparing the tenths place. Since 3 is less than 1, we might think that 1.39 is smaller than 1.148. However, this is not correct because we have to consider the other digits as well. If we move on to compare the hundredths place, we see that 9 is greater than 4. This means that 1.39 is actually bigger than 1.148 by 0.242.
Another way to compare two decimal numbers is to make them have the same number of digits after the decimal point by adding zeros at the end. For example, we can write 1.39 as 1.390 and compare it with 1.148. Now we can see that 390 is bigger than 148, so 1.390 (or 1.39) is bigger than 1.148.