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#1376 Re: Jai Ganesh's Puzzles » Oral puzzles » 2016-03-06 19:09:59
#1377 Re: Puzzles and Games » Arrange Mathematical Operation Using 0-9 to Match the Post Number » 2016-03-06 19:02:04
#1378 Re: Maths Is Fun - Suggestions and Comments » Smileys » 2016-03-06 18:56:41
Ah, the classic SMF smilies... I miss them so much... 
#1379 Help Me ! » [ASK] Can Abacus be Used to Multiply Two Single Digits? » 2016-03-06 16:12:09
- Monox D. I-Fly
- Replies: 41
Can an abacus (by abacus here I mean suanpan, the Chinese abacus) be used to do multiplication of two single digit numbers? Like 4 x 8, 7 x 5, 9 x 7, etc. I have been Googling around but all of them only show multiplication with either one or more number have more than one digit. One source even states that an abacus can't be used to multiply a single digit number with another single digit number and students must memorize the multiplication table to be able to multiply using abacus. This is weird to me, if abacus was built to make people count easier and it helps with addition, which is the simplest math operation, why to be able to multiply with abacus you have to memorize the multiplication table, in which multiplication is more complicated than addition?
#1380 Re: Puzzles and Games » Arrange Mathematical Operation Using 0-9 to Match the Post Number » 2016-03-05 10:31:32
#1381 Re: Puzzles and Games » Arrange Mathematical Operation Using 0-9 to Match the Post Number » 2016-03-04 20:21:48
#1382 Re: Puzzles and Games » Arrange Mathematical Operation Using 0-9 to Match the Post Number » 2016-03-04 18:32:00
#1383 Re: Puzzles and Games » Add 99 more and post it forever. » 2016-03-04 11:16:20
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#1384 Re: Puzzles and Games » Arrange Mathematical Operation Using 0-9 to Match the Post Number » 2016-03-04 11:14:27
#1385 Re: Puzzles and Games » Add 99 more and post it forever. » 2016-03-03 01:06:46
192951
#1386 Re: Puzzles and Games » Arrange Mathematical Operation Using 0-9 to Match the Post Number » 2016-03-03 00:52:49
10(2 x 3 x 4) + 5 + 6 - 7 - 8 + 9 = 245
#1387 Re: Puzzles and Games » Add 99 more and post it forever. » 2016-03-02 05:33:23
192753
#1388 Re: Puzzles and Games » Arrange Mathematical Operation Using 0-9 to Match the Post Number » 2016-03-02 05:32:00
#1389 Re: Help Me ! » Maths Help » 2016-03-01 20:58:14
If the teacher loves math, I mean really loves it, some of that will get to his/her students.
Some math teachers don't even love math, though. They chose that job only because it looks promising and gives a decent amount of money.
#1390 Re: This is Cool » I pwn! » 2016-03-01 19:11:22
I'll be 20 next time I take this test. I wish I could have started a year or two ago but my highschool education was complicated and inefficient. Safe schools were too expensive and affordable schools were too dangerous. (shootings, drug problems, etc.)
Wait, where do you live?
#1391 Re: Puzzles and Games » Arrange Mathematical Operation Using 0-9 to Match the Post Number » 2016-03-01 18:29:12
#1392 Re: Puzzles and Games » Add 99 more and post it forever. » 2016-03-01 18:14:59
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#1393 Re: Help Me ! » Please help settle this fractions test question » 2016-03-01 15:16:59
The only way the problem is consistent is if pluto is not a planet (since if it was pluto would be grouped into either inner or outer categories).
Or, Pluto stands in the middle, right in the limit boundaries of inner planets and outer planets.
#1394 Re: Jai Ganesh's Puzzles » Oral puzzles » 2016-03-01 14:19:05
#1395 Re: Puzzles and Games » Add 99 more and post it forever. » 2016-03-01 14:05:43
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#1396 Re: Puzzles and Games » Arrange Mathematical Operation Using 0-9 to Match the Post Number » 2016-03-01 14:01:00
#1397 Re: Puzzles and Games » Arrange Mathematical Operation Using 0-9 to Match the Post Number » 2016-03-01 01:03:07
#1398 Re: Puzzles and Games » Add 99 more and post it forever. » 2016-03-01 01:00:29
192159
#1399 Re: Puzzles and Games » Arrange Mathematical Operation Using 0-9 to Match the Post Number » 2016-02-29 20:31:16
#1400 Re: Puzzles and Games » Add 99 more and post it forever. » 2016-02-29 20:30:08
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