Monday, March 29, 2010

MULTIPLICATION...THAT SIMPLES IT UP SOME

So our house has never memorized our multiplication table. I never manged to as a child (although I am pretty good at math). I also never manged to get the kids to memorize them either. We play multiplication bingo but everyone needs to find the answer. I think it is good that they know how to find the answer, and that they know that 3x4 & 4x3 are the same question. But knowing them would sure help...especially with division. So I made a multiplication chart in orange. Then I changed the repeats to blue (3x4=12 is orange, 4x3=12 is blue) Then I only had half the chart to memorize with kids....thats still a lot. 62 facts to learn...not likely in math.

But wait...what about the easy ones? The ones we know or can figure in seconds? These would be green.
Zero times table: any number times 0 is 0...green
One Times table: any number times 1 is that number...green
Twos, fives & tens: We can count that way...green
Elevens: any number times that number is that number twice EX: 3x11=33...green
Nines: use the finger trick (pic included)...green

Holay! guess what people, that leaves just 24 multiplication questions to memorize. I think we will start at number 24. Each day we will do one, and repeat it through out the day. I think we will start at the bottom

Here they are
  1. 3x3=9
  2. 3x4=12
  3. 3x6=18
  4. 3x7=21
  5. 3x8=24
  6. 3x12=36
  7. 4x4=16
  8. 4x6=24
  9. 4x7=28
  10. 4x8=32
  11. 4x12=48
  12. 6x6=36
  13. 6x7=42
  14. 6x8=48
  15. 6x12=72
  16. 7x7=49
  17. 7x8=56
  18. 7x12=84
  19. 8x8=64
  20. 8x12-96
  21. 9x12=108
  22. 11x11=121
  23. 11x12-132
  24. 12x12 =144
I am sure someone has figured this out before but I hadn't, so for us, this is a great discovery that encouraged the kids...hope it is for someone else too.

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