Question

Обчислите:6,25*3,4=
0,0017*7,8=
32,291*100=
24,1:1000=
48,24:12=
7:28=
7,31:3,4=
18:0,45=

Answer 1

$6,25*3,4= frac{625}{100} * frac{34}{10} = frac{21250}{1000} =frac{2125}{100} =21,25$

$0,0017*7,8= frac{17}{10000} * frac{78}{10} = frac{1326}{100000}=0,01326$

$32,291*100= frac{32291}{1000} *100=frac{32291}{10} *1=3229,1$

$24,1:1000= frac{241}{10} :1000=frac{241}{10} * frac{1}{1000} = frac{241}{10000} =0,0241$

$48,24:12= frac{4824}{100} :12=frac{4824}{100}* frac{1}{12} =frac{402}{100}* 1 =4,02$

$7:28=7* frac{1}{28} =1* frac{1}{4} = frac{1}{4} =0,25$

$7,31:3,4= frac{731}{100} : frac{34}{10} =frac{731}{100} * frac{10}{34} =frac{43}{100} * frac{10}{2}=frac{43}{100} *5= frac{215}{100} =2,15$

$18:0,45=18: frac{45}{100} =18* frac{100}{45} =18* frac{20}{9} =2*20 =40$

Answer 2

$1)6.25*3.4=21.25\2)0.0017*7.8=0.01326 \ 3)32.291*100=3229.1 \ 4)24.1/1000=0.0241 \ 5)48.24/12=4.02\6)7/28=0.25\7)7.31/3.4=2.15 \ 8) 18/0.45=40$