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# Strategies for subtracting more complex decimals with tenths

Learn all about subtraction of decimals, particularly those in the tenths place. The focus is on various strategies like decomposing whole numbers into tenths and using a number line for visualization.

## Want to join the conversation?

• If want you to subtract 3-1.5 don't you add two zero's to the 3 then add a decimal between 3 and the two zero's? Or is there another way to do it instead of doing that?(adding the two zero's and adding the decimal between the 3 and the zero's)
• Since .5 has only one digit, you only need to add a single zero, 3.0. Or break into parts, (3 - 1) - 1/2 = 2 - 1/2 = 1 1/2.
• why do we line up decimal points when adding and subtracting?
• We line up decimal points and stuff a lot because then we have a critically low chance of mixing up places, like thinking the tenths are in the hundredth, getting the whole thing wrong, and having to restart frustrated. Sorry no one answered you for a long time.
• Why did he say 1 and 0 tenths is 0 and 10 tenths?
• 1 and 0 tenths is the same as 0 and 10 tenths
• I just made 2 into 2.0 and it was easier to solve it
• I know that division of decimals is not in this video, but just how do you divide decimals, say 0.58 divided by 0.12?
• Put it over the place value then do crisscrossed multication.

Me: do 10 - 2 and and a period in front of your anwser and boom your done with the first question.
• at why does he add the 0.5?
• He broke 4.5 down into 4 + .5 and -2.8 into -2 - .8.