Թեմա՝ «Գտնել արտահայտության անհայտ բաղադրիչը»

6 x 7= 42 

5 x 5 = 25

3 x 5 = 15

4 x 6 = 24

7 x 9= 63

5 x 8= 40

9 x 4= 36

6 x 6= 36 

8 x 7 = 56 

81: 9= 9

72: 8=9

54: 6 = 9

36: 4 = 9 

45: 5 = 9

20: 4 = 5 

49: 7 = 7 

64: 8 = 8

45 – 21 = 24

61 – 9 = 52 

73 – 22 = 51

452- 121 = 331

589 – 368 = 221

564 – 234 = 330

735- 512 = 223 

817- 628= 189

364+ 346= 770

85 + 465= 550

316 + 324= 640

620+ 8 = 628

674+ 49 = 723

123+ X = 396

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