Question

va rog ajutați-mă cu aceste exerciții!!

Answer 1

27.
38 = 30 +8
66 =55 + 11
56 =46 + 10
42= 12 + 30
93 = 81 +12
77 = 70 + 7
50 = 59 + 1
71 = 59 + 12
84 = 24 + 60
90 = 55 + 35

28.
45 - 54
62 - 26
75 - 57
89 - 98
54 - 45

29.
a. Suma cifrelor = 6
15, 51, 24, 42, 33
b. Suma cifrelor = 9
18, 81 , 27, 72, 36, 63 , 45 , 54
c. Suma cifrelor = 5
14, 41, 23, 32

Answer 2

27)     38=30+8      ,66=32+34...etc
28)    45=54;62=26;75=57;89=98;54=45;
29)    15,24,42,51.........18,27,36,45,54,63,72,81..........14,23,32,41.
30)    18,28,38.......98
          50,51,52,.......59
          90,91,92.......99.
31)    a) 94,83,72,61,50

         b)93,82,71,60
32)    2034,2340,2403,2304 ,3420,3204,3042,3024,4302,4203,4032,4023