In our mini-lesson today, we dived into the steps of using the standard algorithm for multiplication. We reviewed how to multiply each level and explored why this shortcut works (it takes advantage of place value). We also spent time reflecting on what we noticed in the algorithm and areas of possible confusion. We also didContinue reading “How to multiply using the standard algorithm”
Tag Archives: place value
Where did our number system come from … and why do we have “base ten”?
In today’s lesson we set up our math journals and explored the base ten system. Our guiding question concept: our system has only ten digits (0 to 9), but can represent an infinite amount of numbers. How does that work? Place value is the secret sauce. We compared our system to other number systems whichContinue reading “Where did our number system come from … and why do we have “base ten”?”
Mr. J’s Math Class 