Răspuns :
Răspuns:
a)
4x1000=4000
7x1000=7000
20x1000=20000
30x1000=30000
b)
4x10x100=4000
7x10x100=7000
20x10x100=20000
30x10x100=30000
Răspuns:
a)
4000=1000•4
7000=1000•7
20000=1000•20
30000=1000•30
b)
4000=100•2•2
7000=100•10•7
20000=100•20•10
30000=100•30•10