What are the rules in operation with decimal?

Answer 1

When working with decimals, the primary rules include aligning the decimal points when adding or subtracting, which ensures accurate placement of values. For multiplication, the total number of decimal places in the product should equal the sum of the decimal places in the factors. In division, the divisor should be made a whole number by moving the decimal point, and the same number of places should be moved in the dividend. Lastly, rounding rules apply when necessary, typically rounding to a specified number of decimal places.