![]() ![]() "Now that we have calculators, we no longer need log's, so let's cut them out of the high school curriculum." Now our Calc 1 students don't know log's and ask questions like "I got $\ln 1/2$ but the back of the book says $-\ln 2,$ what did to wrong?" Answer: You went to the wrong high school. (Smooth segue into rant:) This is what happens every time someone at one level of math decides that some bit of math isn't useful anymore. Printable Multiplication Table Chart Up To 100. The answer is a fraction in unreduced form, and they still have to factor.) (Alternatively, the students can multiply the first fraction by $\frac$. If one has to stop and tediously factor $42$ and then $48$ and then Working the above addition of fractions is extremely painful To look up a multiplication fact, find the first factor in the column header and the second. So being able to quickly factor smallish denominators is a useful The compact multiplication tables are basically lookup charts. (This is my answer to people who say, "We haveĬalculators now, so why memorize multiplication tables?" Answer:īecause when you see $42$, you need to think $6\times 7$, or you'll Since they don't have their multiplication facts memorized, the numbers $42$ and $48$ mean nothing Pupils should also be able to write and solve multiplication and division equations related to multiples of 10, 20. The first hurdle in adding fractions is that given ![]() ![]() I have a small gig tutoring 6th and 7th grade "at risk" students. Past that, the next few numbers don't have so many factors. ![]()
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