31-19=40-28=

47-29=16+29=

56+28=64+27=

96-47=73-36=

81-24=80-37=

82-44=16+19=

48+17=87-48=

80-47=33-17=

49+27=58+13=

27+69=37+56=

57+35=95-59=

50-24+25=57+16-24=

84-19-48=33-17+65=

33-17+65=37+27-47=

81-19-35=53+28-26=

40-12+16=31-14+35=

53+28-26=40-12+16=

94-56+49=47+46-17=

80-44+56=82-29-25=

82-29-25=70-42+45=

84-55+38=72-17-16=

69+22=28+26=

29+23=29+13=

15+77=35+37=

79+18=27+38=

27+28=53-45=

27+48=75-68=

83-67=35+27=

三年级数学加减法口算题4

70-58=97-19=

70-48=90-18=

18+68=98-29=

41-23=71-45=

17+14=39+48=

39+38=41-13=

15+16=66+19=

63-46=38+28=

78-69=46+39=

50-21=77-59=

54-38=62-36=