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### Course: Arithmetic>Unit 12

Lesson 4: Subtracting decimals (tenths and hundredths)

# Strategies for subtracting basic decimals

Dive into the world of subtracting decimals, focusing on tenths. It's all about exploring different strategies like using visual aids, hopping along number lines, and splitting numbers into bite-sized chunks.

## Want to join the conversation?

• It is like subtracting but with a decimal point to watch out for
• you just subtract normally then put the decimal point in.
• F r e e e n e r g y p o i n t s
• I love math! And astronomy.
• me too
(1 vote)
• 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.
• subtracting with decimals
• but what if your number is smaller than the number you are subtracting by for example 1.0 - 0.25 ?
• You can subtract 1.0 - 0.25 like this, let's nine up numbers, when we line up numbers make sure each number has a number we subtract from, so 1.0 becomes 1.00, now:
1.00
0.25
0 becomes 10, 10 - 5 = 5, 0 in tenth's place becomes 10, and then 9 become we gave 1 to hundredth's place, so 9 - 2 = 7, finnaly 1 becomes 0 because we borrowed, so 0 - 0 = 0, our answer is: 0.75