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## Early math review

### Course: Early math review>Unit 6

Lesson 4: Strategies for adding 2- and 3-digit numbers

# Breaking apart 3-digit addition problems

Sal shows ways to break up addition problems using place value.

## Want to join the conversation?

• It allows you to solve harder addition problems.
• Why do we have to cross out instead of solving it all in our brains?
• When you solve something in your brain you use all these techniques, even if you don't realize...

Knowing what you are doing and how the numbers work will help you solve problems faster and understand more complex things later
• What's 688 x 79
• 54352 easy
• Why dont you just add 189 + 608?
• You could, but this is just another way to portray this equation using place values and expanded form.
• What if you need to get to 100 with breaking 4 addition problems and i had to choose something thats the same as 200+300 what will i use in the equation of the problems to make this problem Correct if i used a number line or a chart or blank peice of paper
also who can solve this math problem
609+980=?
good luck
#bringbackbackgrounds!
🌺🌸kyleigh101🌺🌸
• that is so hrad question can you halp me plise
• So if you cannot break apart ones because they are the smallest form of addition... then how can you justify breaking apart decimals? (I mean, I get that you can, but what is the logic behind it?)