Задания по ментальной арифметике

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11-11=

66-66=

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27+11=

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15+34=

25+24=

38+11=

49+50=

76+12=

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17+21=

56+21=

64+15=

36+52=

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39+10=

12+17=

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35+50=

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25+13=

23+16=

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32+17=

22+27=

18+31=

27+51=

13-11=

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17+12=

44+55=

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53+11=

42+55=

17+61=

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64+25=

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34+15=

25+11=

38-11=

13+21

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66+11=

77+11=

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3+1=

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5+1=

2+1=

55+11=

55+11=

28+11=

622+12=

413+21=

55+1=

117+11=

118+331=

228+111=

331+111=

222+111=

121+111=

555+444=

765+111=

353+141=

221+118=

11-11=

66-66=

22-22=

77-77=

33-33=

3-1=

11-1=

14-1=

84-1=

88-88=

67-11=

28-11=

622-12=

443-21=

44-44=

97-81=

624-121=

228-111=

331-111=

88-88=

121-111=

781-231=

766-111=

413-211=

876-321=