Răspuns :

Răspuns:

ex1

a) 5×144×20=5×20×144=100×144=14400

b)40×375×5=40×5×375=200×375=75000

c)25×238×4=25×4×238=100×238=23800

d)3×329×30=3×30×329=90×329=29610

ex2

a) (8×4)×12=32×12=324

b) (25×3)×12=75×12=900

c) 67×(9×8)=67×72=4824

d)48×(16×3)=48×48=2304

e)43×(105×2)=43×210=9030

f) (2×3×9)×10=54×10=540

Spor la teme!