Question

produsele apoi verifica folosind operatia inversa a) 4×5 8×3 b) 6×9 7×5 c) 8×4 9×5 d) 9×7 8×6

Answer 1

Răspuns:

a) 4×5=20

20:5=4

8×3=24

24:3=8

b)6×9=54

54:9=6

7×5=35

35:5=7

c)8×4=32

32:4=8

9×5=45

45:5=9

d)9×7=63

63:7=9

8×6=48

48:6=8