Question

I’m confused on adding decimals

Answer 1

Adding whole numbers together is fairly straightforward, but how do we add a whole number and a number with a decimal? The trick is to write the whole number as a decimal number by including a decimal point followed by zeros. Use as many zeros as needed to make your whole number have the same number of decimal places as the decimal number. Then, align the decimal points and add the numbers by adding their respective place value digits together.

Here’s an example:

Sally had $29.89. All of sudden she found a $100 dollar bill on the street.
How much does she have now?

Step 1: Line them up!

100.00

29.89 +

_________

129.89

As you can see l added two zeros to represent that there was no cents.

Hope this helps!

Ms. Jennifer

Answer 2

so line up the decimals first off.

Explanation:

1) line up the decimals

10.98

11.25

2) then add down like you were to regularly add (move right to left when adding)

do 8 plus 5 first, which is 13,

then add the next column, add 9, 2 and don't forget the 1 from the 13 which you should get 12,

then add the 0, 1 and the one from the 12, which should get you 2.

finally add the last column which should also get you 2.

10.98

+11.25

----------

22.23

*and if one number doesent have a decimal just add one at the end of the number and zeros after the decimal so you can line them up and add them like the way above.*