Question

EXERSEAZĂ!
2 Efectuează prin procedeul preferat:
23 x 3
42 x 2
12 x 6
31 x 3
22 x 4
18 x4
33 x 2.
44 x 2
23 x 4
11 x 5
24 x 2
18 x 5
a
35 x 2
45 x 2
37 x 2
17 x 5
49 x 2
38 x 2.
47 x 2
13 x 6
27 x 3
29 x 3
26 x 3
19 x 4​

Answer 1

Explicație pas cu pas:

23×3=23+23+23=69

42×2=42+42=84

12×6=72

31×3=31+31+31=93

22×4=22+22+22+22=88

18×4=18+18+18+18=72

33×2=33+33=66

44×2=44+44=88

23×4=23+23+23+23=92

11×5=55

24×2=24+24=48

18×5=18+18+18+18+18=90

a

35x2=35+35=70

45×2=45+45=90

37×2=37+37=74

17×5=17+17+17+17+17=85

49×2=49+49=98

38×2=38+38=76

47×2=47+47=94

13×6=78

27×3=27+27+27=81

29×3=29+29+29=87

26×3=26+26+26=78

19×4=19+19+19+19=76