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## Arithmetic

### Course: Arithmetic>Unit 12

Lesson 4: Subtracting decimals (tenths and hundredths)

# Strategies for subtracting basic decimals

Sal uses place value and a number line to subtract decimals, such as 1.5-0.7.

## Want to join the conversation?

• It is like subtracting but with a decimal point to watch out for
• Yes, the decimal point matters. When you add or subtract decimals, you have to make sure that the decimal points line up before moving on to solve the problem.
• F r e e e n e r g y p o i n t s
• I agree.
• Free Cookies if you upvote

Just bought 50 cookies for the first 50 upvoters :)
• I love math! And astronomy.
• When you did an easy problem like 0.3-0.2 all I did was subtract 3-2=1 and added the 0 first the the decimal and lastly the number 1 getting this decimal 0.1. Anyway besides this easy problem why didn't you do it like this for an easy problem?
• Mr. Sal uses a strategy to that shows you an easier problem first, so when you get to more difficult ones you are not overwhelmed. (he will go to more difficult ones later on)
• At in the video, I don't get what he is trying to say?
• When subtracting 1.5-.7, you can break it down in many ways. At this time stamp, Sal is breaking it down to 1.5 - .5 - .2 because 1.5-.5 is easy to do and then 1-.2 is easy. That way it may be easier to do in your head.
(1 vote)
• I'm literally dying