הכל באתר אחד, מתמטיקה

Multiply of 37 by multiplies of 3:

     3 x 37 = 111
     6 x 37 = 222
     9 x 37 = 333
    12 x 37 = 444
    15 x 37 = 555
    18 x 37 = 666
    21 x 37 = 777
    24 x 37 = 888
    27 x 37 = 999

Nice one:

111.111.111 x 111.111.111 = 12.345.678.987.654.321

Trapeze:

                 1 x 9 + 2 = 11
                12 x 9 + 3 = 111
               123 x 9 + 4 = 1111
              1234 x 9 + 5 = 11111
             12345 x 9 + 6 = 111111
            123456 x 9 + 7 = 1111111
           1234567 x 9 + 8 = 11111111
          12345678 x 9 + 9 = 111111111

another Trapeze:

                 1 x 8 + 1 = 9
                12 x 8 + 2 = 98
               123 x 8 + 3 = 987
              1234 x 8 + 4 = 9876
             12345 x 8 + 5 = 98765
            123456 x 8 + 6 = 987654
           1234567 x 8 + 7 = 9876543
          12345678 x 8 + 8 = 98765432
         123456789 x 8 + 9 = 987654321

and another one:

                 0 x 9 + 8   = 8
                 9 x 9 + 7    = 88
                98 x 9 + 6    = 888
               987 x 9 + 5    = 8888
              9876 x 9 + 4    = 88888
             98765 x 9 + 3    = 888888
            987654 x 9 + 2    = 8888888
           9876543 x 9 + 1    = 88888888
          98765432 x 9 + 0    = 888888888
         987654321 x 9 - 1    = 8888888888
        9876543210 x 9 - 2    = 88888888888

גולשים עכשיו באתר

:-) זכויות שמורות :-)

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