Question

oblicz:

* to razy

1 2/3* 9/10=

5 3/16*8=

12*3 3/4=

3 1/2*2 2/5=

???

Answer 1

1 2/3* 9/10=  \frac{5}{3}  *  \frac{9}{10}  =  \frac{3}{2}  = 1  \frac{1}{2}

5 3/16*8=  \frac{83}{16}  * 8 =  \frac{83}{2}   = 41,5

12*3 3/4=     12 *   \frac{15}{4} = 15

3 1/2*2 2/5=   \frac{7}{2} *  \frac{12}{5}  = 8.4

Answer 2

1 2/3*9/10=1 2/1 * 3/10=6/10

5 3/16*8=2,65

12*3 3/4=12/1x15/4=180/4=45       

3 1/2*2 2/5=3 1/1* 2 1/5=6 1/5

prosze :)