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a fost răspuns

2.Calculeaza grupand convenabil:
2x43x5x10= 12x147x10=
6x19x5= 15x16x2=
2x13x50= 2x25x2x60=
2x8x100x5= 4x68x25x10=

Răspuns :

2x43x5x10=86x5x10=430x10=4300
12x147x10=1764x10=17.640
6x19x5=114x5=570
15x16x2=240x2=480
2x13x50=26x50=1300
2x25x2x60=50x2x60=100x60=6000
2x8x100x5=16x100x5=1600x5=8.000
4x68x25x10=272x25x10=6800x10=68.000

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