This week is all about MULTIPLICATION!! Today we worked on the standard algorithm in multiplication. An algorithm is a method for solving a problem in math. This is the traditional way your parents likely learned how to do multiplication. Let's look at the following problem:
53 x 4
When we compute this problem, we are actually adding the number 53, 4 times. We work on the multiplication by multiplying the ones digit first by the two, carrying over to the next place value what we need to and then multiplying the 4 by the 5 in the tens place and adding the carry over so that we get a product of 212.
You will achieve the same solution by multiplying 50 x 4 and 3 x 4 and adding those products together. This is known as the partial products algorithm.
For a video lesson on how to multiply by one digit or more than one digit, watch THIS.
If you want another lesson on the basic use of multiplication, watch THIS as well.
If you have no trouble at all doing single or double digit multiplication, please watch this video to prepare for our lesson tomorrow on multiplying using decimals. Be sure to do a few problems using the "Test yourself" prompt.
See you tomorrow.
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