The simplest way is to line up the numbers so that their decimal points are aligned, and corresponding digits are also aligned according to their place value.
The simplest way is to line up the numbers so that their decimal points are aligned, and corresponding digits are also aligned according to their place value.
Because when adding or subtracting, the operations must take account of the place values of individual digits in the numbers. When multiplying, only the overall order of magnitudes are relevant for placing the decimal point in the product.
You do a long division, adding decimal digits until you get a remainder of zero (terminating decimal) or a repeating pattern of decimal digits.
by adding or subtracting the values of the digits in the front place
The only way to do this is by adding a zero after the 2 digit in the decimal.
You do by subtracting one from the previous number and adding 10 to the top number of the digits you are regrouping. Subtract those two digits and you should get your answer.
You line the number up, vertically, so that the decimal points are one below the other.
The simplest way is to line up the numbers so that their decimal points are aligned, and corresponding digits are also aligned according to their place value.
Because when adding or subtracting, the operations must take account of the place values of individual digits in the numbers. When multiplying, only the overall order of magnitudes are relevant for placing the decimal point in the product.
You do a long division, adding decimal digits until you get a remainder of zero (terminating decimal) or a repeating pattern of decimal digits.
by adding or subtracting the values of the digits in the front place
same number of significant digits
as many as needed to satisfy the accuracy needed.
I presume this is a question about scientific arithmetic. When adding or subtracting two numbers, with a different number of decimal places, the quantity with the least number of decimal places determines the number of decimal places in the answer. For example, let's say you are adding two masses: .1 grams .11 grams .1grams + .11grams = .21 grams Because .1 only has one decimal place, the answer becomes .2 grams, and we ignore the .01 because it is lost due to a lack of precision. The process of multiplying and dividing is different, as you compare significant digits instead of decimal places instead.
When adding or subtracting numbers, the result should have the same number of decimal places as the least number of decimal places in the original numbers. This is because in these operations, you are limited by the least precise measurement. Significance figures don't matter in addition or subtraction, only decimal places.
The only way to do this is by adding a zero after the 2 digit in the decimal.
9.75 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its rational equivalent is 9 75/100 which can be simplified, but if adding (or subtracting) other decimal numbers with two digits, you may prefer to delay simplification.