9 - 8 = 1 +6 =7 -6 = 1 +4 =5 -4 =1 +2 =3 - 2=1 +0 =1
6,201
По моему так правильно. Но я не очень то уверенна.
1)
688 : 2 = (600 + 88) : 2 = 600 : 2 + 88 : 2 = 300 + 44 = 344
844 : 4 = (800 + 44) : 4 = 800 : 4 + 44 : 4 = 200 + 11 = 211
876 : 3 = (600 + 210 + 66) : 3 = 600 : 3 + 210 : 3 + 66 : 3 = 200 + 70 + 22 = 292
96 : 4 = (80 + 16) : 4 = 80 : 4 + 16 : 4 = 20 + 4 = 24
93 : 3 = (90 + 3) : 3 = 90 : 3 + 3 : 3 = 30 + 1 = 31
2)
876 | 3
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292
6
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27
27
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0
6
6
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0
1) s10-S9= a10 = 90-63 =27
a10 = a1 +9*d = 27
-мало данных
2)
S101-S100 = a101 = 16
d = a101 - a100 = 16-13 = 3
a1 = 13-99*3= - 284