This is just a suggestion.
Memorizing is done in a vacuum. Try to find a context.
A checker or chess board is 8 x 8. There are 64 squares. The board folds in half and there are 32 squares in each half so 8 x 4 = 32. There are four 4 x 4 corners. 4 x 4 = 16.
When I was a kid there was a radio game show "The $64 Question" . The amount of the prize would double each time an answer was correct. The prizes were successive powers of 2.
5 times anything has to end in a zero or a five
I picked up the squares because squares are easy to visualize, especially if you have a checker board.
5 x 6 endsin either a 5 or a zero but 5 x 6 is even so it must end in a zero. Well, 5 x 5, five nickels, is 25 so 5 x 6 must be close to 25, either 20 or 30 but six 5's is more than five 5's \
5 x 6 = 30.
Instead of repeating the product over and over, look for things that make sense. Why does it make sense that
7 x 8 = 58? Ha Ha just kidding
7 x 8 = 56.
I think of the chess board and know 8 x 8 = 64.
7 x 8 is one less 8 than 64. What added to 8 give a 4? 6 does. And 8 less than 64 must be in the 50's so 7 x 8 = 56.
7 x 5 = 35 because 7 nickels is 35 cents. 7 x 7 must be two sevens more than 35 or 14 more than 35 or 49.
The idea is to make up these reasons. Think of telling someone else why 5 x 9 = 45. The reasons won't be the same because you aren't going to memorize the reason, you are going to reason it out next time. Even when you knpow the products, still think of why.
There are 6 sides on a die (singular of dice) so there are
6 x 6 = 36 possible throws with a pair of dice.
Numbers are your friends, get to know them. My homeroom number in the 7th grade was 213...which factors into 3 x 71 and no further.
License plates are a source of numbers to play with. I repeat, you aren't trying to memorize, you are trying to know.
By the way, the 10, 11 and 12 s are kind of neat. There 12 inches in a foot so a square foot has 144 square inches so it comes up a lot.
2007-11-25 19:02:23
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answer #1
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answered by Jeffrey D 2
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Basically, you just have to add 6, 7 or 8 to each answer before.
For example, with 6 you have:
1 x 6 = 6
2 x 6 = 12
3 x 6 = 18
...
etc.
6, 12, 18, 24, 30, 36, 42, 48, 54, 60, 66, 72
The 6 times table is just double the 3 times table.
So if someone asks for 6 x 7... think of 3 x 7 (21) and double it (42). Or 6 x 9 ... think of 3 x 9 (27) and double it (54).
The 8 times table is just double the 4 times table. So it would be the same method.
But more than anything, it just takes going over them several times. Create flash cards, try some online times times table games, practice with your friends, write the 6/7/8 times tables over and over, etc.
2007-11-25 17:58:57
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answer #2
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answered by Puzzling 7
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Just practice. Look at a table and memorize. There's not much more than that. You could keep adding one number over and over, but this is one of the few things I would say you should drill into your head.
2007-11-25 18:08:37
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answer #3
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answered by Anonymous
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Try this site and see if that helps. =0)
2007-11-25 17:59:32
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answer #4
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answered by Blaxican 4 Lyfe 3
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