Question

pdr klasa 5(matematyka z plusem)s177 z1 pomocy!!!

Answer 1

13m x 19m = 141m
8,5cm x 3 cm = 25,5 cm
4,5 dm x 6dm = 27 dm
2,5cm x 72 mm = 25mm x 72 mm = 18 cm 
6,3m x 25 cm = 630 cm x 25 cm = 15.000 cm

4,5 km x 8 km = 360 km 

Answer 2

a) 13x19= 247 cm(kwadratowych)

b) 3 x8,5= 25.5 cm 2

c) 9/2x6= 54/12= 4  1/2

d) 2,5x7,2=18                    7,2

                                       x 2,5

                                ---------------

                                         360

                                   +  144

                           -----------------------

                                        1  8,  0 0

e) 6,3x2,5= 15,75

 

                                        6,3

                                   x   2,5

                             -------------------

                                       315  

                               +   126   

                         -----------------------

                                 15,75

f) 4,5x 8= 36                            4,5

                                             x    8

                                            ----------

                                               360