|
maltesecaflangi (October 13, 2008 at 5:11 pm)
thanks for this video man maths is cool :)
sanaona (October 13, 2008 at 3:20 pm)
thanks for this video it really helped
Jinxmelucky (October 13, 2008 at 3:53 am)
i like this guy's voice):)
hdrevolution123 (October 12, 2008 at 10:03 pm)
You genius! I'm pre-iGCSE top set and that method will sure help me with mental calculation
Siermitch (October 11, 2008 at 2:10 am)
156,169,192,and 252 are the answers
Siermitch (October 11, 2008 at 2:04 am)
156
miiweL555 (October 9, 2008 at 10:50 pm)
Are u gay?
Potts132 (October 9, 2008 at 9:45 pm)
Oh... I found out that if both nubers are in the same 10's group so to speak
eg. 32x31,40x45
all you have to do is multiply by the diget in the 10s place
loincloth200 (October 9, 2008 at 4:47 am)
your answer exceeds the base of ten. Use his method for base 100 problems. Although, you might find with lower numbers that it requires a bit of addition crunching.
Potts132 (October 9, 2008 at 12:18 am)
It doesnt work 4 all questions:(.
23x42=
2+23=25
3x2=6
256. But thats wrong. It should be 966. What did I do wrong? |
