Video

Breaking apart 3-digit addition problems (Full video)

Khan Academy

Supporting grades: 3

Description: Sal shows ways to break up addition problems using place value. Now let's look at these choices. Well in 189, we have a 1 in the hundreds place, so this right over here, that is one 1 hundred, 100, and then all of the choices actually have 6 hundreds, 6 hundreds, 6 hundreds, where are they getting that from? Well in 608, the 8 is in the ones place, so it's 8 ones, so this first choice is looking quite good.

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