spr mnozenie przez 10 kl 4.doc

Gr 1

1.     Oblicz w pamięci:

37 · 10 = ______                                                                      5400 · 10 = ______

1020 · 100 = ______                                                        24 · 300 = ______

20 · 400 = ______                                                                      500 · 80 = ______

2.     Wpisz odpowiednią liczbę:

165 · _____ = 1650                            4 · ____ = 4000                                           _____ · 76 = 7600

_____ · 10 = 60                                           _____ · 100 = 2000

3.     Oblicz sprytnie.

48 · 2 · 5 = __________________________________________________

40 · 7 · 25 = _________________________________________________

189 · 50 · 20 = _______________________________________________

20 · 4 · 99 · 25 · 5 = ___________________________________________

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Gr 2

1.     Oblicz w pamięci:

34 · 10 = ______                                                                      5600 · 10 = ______

2010 · 100 = ______                                                        42 · 300 = ______

30 · 200 = ______                                                                      500 · 60 = ______

2.     Wpisz odpowiednią liczbę:

178 · _____ = 1780                            9 · ____ = 9000                                           _____ · 43 = 4300

_____ · 10 = 90                                           _____ · 100 = 7000

3.     Oblicz sprytnie.

21 · 2 · 5 = __________________________________________________

40 · 9 · 25 = _________________________________________________

131 · 50 · 20 = _______________________________________________

20 · 4 · 97 · 25 · 5 = __________________________________________