21.77＋52.32＝

98.44＋43.36＝

17.16－15.51＝

68.41－30.91＝

86.93－54.74＝

35.18＋37.07＝

92.03－64.75＝

86.1－60.02＝

49.33－10.68＝

30.9－27.38＝

14.37＋44.27＝

65.87＋52.17＝

57.89＋95.96＝

39.13＋58.46＝

11.73＋50.8＝

33.12＋81.76＝

69.73＋97.78＝

18.73－15.06＝

42.5－21.44＝

36.99＋37.37＝

97.37－32.15＝

95.65＋98.31＝

74.42－36.17＝

71.38－41.71＝

67.43＋35.1＝

39.21－17.87＝

66.69－14.86＝

72.12－35.01＝

55.01－47.56＝

60.27＋44.42＝

96.96＋36.22＝

85.2＋37.83＝

20.04＋27.82＝

76.48－50.05＝

48.59＋21.82＝

90.96＋59.52＝

42.09＋72.74＝

78.21－22.41＝

30.49＋88.29＝

38.14＋23.71＝

62.25－18.09＝

26.87＋60.05＝

69.48＋52.77＝

50.15－47.8＝

80.26＋44.04＝

74.01－38.43＝

62.58＋44.74＝

58.71－37.87＝

57.56＋75.16＝

68.01＋73.27＝

57.06＋12.78＝

56.24－29.13＝

17.33＋58.55＝

65.04＋58.99＝

15.85＋51.41＝

75.33－59.28＝

33.54－27.87＝

20.37＋20.97＝

68.09－35.21＝

69.24＋35.4＝

44.89－13.02＝

38.55＋20.65=