一年级数学100以内加减混合运算口算题1800题

练习一

39-23-13=45-9-34=99-85-12=

98-12-84=59+11+11=34+18+12=

25+16+13=14+7+14=25-8+10=

27-13+20=44-24+11=52-28+9=

80-20-60=84-20-25=74-50-17=

64-34-17=40-28+28=43-29+27=

60-30+10=18+30-11=30+26+16=

7+18+17=57+8+18=62+9+19=

36-23+18=45+9-34=99-85+17=

98-84+19=88-9-72=82-10-68=

练习二

88-44-14=66-33-3=78-24-14=

22+26+18=36-12+12=55+25-23=

47-25+13=78-25-15=33+39-19=

58+60-28=28+31-11=42+36-22=

33+28-18=36+25-36=78+13-58=

66+50-56二89-45-44=93-12-31=

87-55-12=66-33+4=28+13+22=

26-19+24=33+19-33=47+14-27=

75-25+26=34-18+36=19+28-9=

33-18+35=48+16-28=73-11-22=

练习三

69-47-11=58-15-40=72-35+16=

58-22-27=5+37+27=17+33+11=

16+37-22=7+33+38=40-16-13=

66-23-18=32-25+10=12+35-25=

11+36-39=40-38+19=47-19-17=

67+23+3=16+6+25=6+18+16=

66+14+6=90-18-10=88+5-78=

78+10-68=68-59+4=57-48+29=

48-29-9=55-11+46=16+55-22=

20-5+45=50-22+17=54-25-25=

练习四

56-28-8=68-26-23=41-19+10=

52-14+14=48+18-37=17+4+14=

75+16-5=75+12-5=18+28+11=

26+25+45=48-29+10=16+47-34=

45-36+11=41-23+10=55+18+17=

68-39-9=75-37-30=92-36-30=

65-30-29=16+55+22=58+22+13=

17+35-23=56+14+24=18+39+16=

16+35+25=76-29-28=91-22-20=

74-27-29=93-44-42=16+37+17=

练习五

17-4+17=75+16-45=75-26+35=

18+28-17=44-24-18=67-39-19=

98-49+10=48-8-21=68-9-57=

69+9-57=48+23+10=10+47+33=

46+36+19=45+28+18=88-44-38=

65-56-5=35+35+10=18+35+25=

17+36+33=40+39+13=62+28-60=

84-20+27=74-50+19=64+37-14=

18+4+14=8+44+46=27+44+13=

57+15+11=38+25+12=25+8+18=

练习六

67-18+23=16-7+25=26+18-12=

66+15-16=19+44+11=66-20-18=

79-29-35=33-4-20=37-18-4=

17+44+22=8+44-43=9+44-11=

11+44-22=21+44-13=16-7+25=

45-16-14=77-18-50=89-10-34=

83-44-23=45-27+10=4-65-16=

64-23-19=66-17-33=73-34-10=

18+9-19=64-55+5=26+15+25=

35+45+10=27+32+23=41+19+10=

练习七

90-47+44=99-53+35=72-36+25=

50+25-24=58+22-23=79-38+27=

58-47+11=58+15-40=58+25-46=

88-44+37=40+16-27=63+23-18=

79-27+9=38+29-19=75-37+30=

36+28-8=68+26-28=55+25-25=

91-22+20=67-39+9=76-29+28=

44-24+18=93-36+30=60+30-29=

27+11-17=33+3-20=50+11-23=

34+12-17=25+13-19=14-7+14=

练习八

48+18-21=45+34-50=64—56+5=

68+19-57=66+28-16=69+19-57=

88-44+38=66+17-33=63+23-19=

79+9-55=20+25-17=60-19+18=

72+18-79=82-44+23=49+39-15=

48+48-40=47+19-17=90-18+10=

25+19-14=77+14-50=57-18+11=

38-29+12=25+33-13=18-4+17=

84-65+28=30+36-18=15+16-17=

57-38+18=30-13+28=26-15+15=

练习九

100-89+8=42-17+28=56-19+28=

61-12-24=97-69+30=65+11+19=

38+50+5=27+18+1=61+10-35=

12+54-63=94-92+30=69+11+5=

4-3+39=91-7-62=58+32-35=

78+10-86=27+15-13=55-47+67=

23+37-13=24+33-33=23+66-72=

78-59+40=47+49-86=47+44+6=

70-9+16=57-12-39=65+11+19=

67+26-36=13-2+20=17-3+4=

练习十

12+54-63=33+31-13=74-58+57=

23+17+16=91-7-62=56+43-87=

34+49-22=87-57-21=55-47+67=

12+82-23=12+82-23=15+38+32=

78-59+40=20+73+3=31+57+6=

14+36+37=57+40+1=18+45+15=

43+35+11=68+5+2=19+16+32=

19+16+32=38+50+5=57-12-39=

42+28+5=42+28+5=94-92+30=

17-3+4=97-69+30=97-69+30=

练习d

58+32-35=23+17+16=61+10-35=

61+10-35=23+37-13=87-57-21=

4-3+39=4-3+39=47+49-86=

15+38+32=78+7+12=82+11+6=

90+5+4=12+57+13=20+53+24=

82-28-33=27+15-13=27+15-13=

65+11+19=38+50+5=23+66-72=

23+66-72=12+54-63=94-92+30=

70-9+16=70-9+16=91-7-62=

58+32-35=13-2+20=13-2+20=

练习十二

55-47+67=23+37-13=74-58+57=

15+38+32=78-59+40=47+49-86=

34+49-22=38+50+5=57T2-39二

65+11+19=12+82-23=94-92+30=

17-3+4=12+54-63=19+16+32=

58+32-35=36+4-24=57-39-4=

55+15-54=40+27-37=54-34+3=

95-60+60=45+30-21=22+62-49=

64+19-60=99-39+3=69+2-4=

93-26-33=43-20-13=71-42+41=

练习十三

19-4+50=18+46-26=49-6+12=

31+43-3=56-28+35=78-39-24=

82-61-20=90-15-29=11+14-11=

93+4+2=87+10+7=72+22+2=

69+16+6=84+14+2=14+16+30=

68-61-5=65+25+7=6+21+51=

28+56+1=80+16+3=70+4+17=

95+1+3=34+11+52=65+26+3=

1+86+4=78+19+2=87+7+1=

47+28+18=68+23+8=64+21+5=

练习十四

47-25-3=63-44-6=44-19-18=

89-51-24=32-24-3=31-25-3=

82-53-10=85-44-8=98-23-17=

54-37-16=82-9-3=98-97-1=

96-84-2=74-40-24=47-18-11=

86-42-23=63-55-5=83-44-18=

91-28-24=30-26-3=64+20+13=

35-25-1=32+12-5=74+21+5=

21+77+3=27+37-22=72+17+8=

6-19-41=83+16+1=22-20+63=

练习十五

78+9+2=23+12+48=97+35-54=

75+22+2=34-7+28=30-28+50=

85-49-14=43+10+32=45+63-62=

76-48-19=53+23-43=24-2+7=

57+31-38=80-66+58=22+11-5=

46-43+76=69-54+49=27-9-2=

46-43+76=69-49+49=66-25-6二

59+39-53=69-54-15=66-25-15=

14+12+25=69-3-66=66-25-6=

14+12+25=53+28-28=25+44-30=

练习十六

61-27+9=52+5-44=22+11-5=

46-43+76=25+67-14=75+17-18=

46+43-46二69-54+49=7+50-56=

68-38+34=69-54+49=66-25-6=

14+84-65=18-10+21=66-25-6=

14+15+25=47-14-16=14+15+21=

38+12+45=65-5+9=53+28-28=

65-5+28=65-38+5=29+45-14=

19+33-5=59-35-14=29+45-14=

49+27-44=38-15+35=49+27-44=

练习十七

49+27-44=18+62-65=89-88+23=

68-62+65=18+62-32=10+83-81=

50-43+60=10+34+25=56+6-28=

57-26+25=97-86-4=22+11-5=

42+45-79=80-66+58=46-43+76=

61-27+9=98-18+8=73+6-50=

41+21-22=65-55+19=78-5-13=

89-61+62=98-57+51=29+1-13=

87-70+80=72-12+15=47+34-73=

28+31-23=83-50+2=80-59+71=

练习十八

14+85-92=23+17+16=91-7-62=

42+28+5=23+37-13=87-57-21=

55-47+67=61-12-24=47+49-86=

15+38+32=97-46-46=93-75+57=

51+5+37=81-73-3=2+20-5=

77+21-76=77+21-76=5+5+74=

22-2+35=23+44+23=24+67+7=

1+55+33=45-14+9=43+26-53=

88-7-12=28+16+47=24+67+7=

9+31-30=83-58+72=71+10-51=

练习十九

68-58-4=58-49-2=25+8+17=

27+13+20=44+24+11=52+28+9=

90-47-42=99-53-35=72-36-25=

50-25-18=17+33-11=16+33-22=

17+33-33=5+37-27=43+28+28=

43+29-27=57+17+18=18+32+11=

85-25-25=79-38-27=64-55-5=

47-38-7=14+24+24=47+23+11=

34+17+26=15+37-17=85-26+25=

14+26-24=60-22+11=26+15+15=

练习二十

78-32-16=55-28-12=47-19-14=

18+33+12=54+28+2=32+19+8=

48-29-11=98-33-22=63-21-32=

69+22-22=29+34-19=51-38+19=

35+19+15=73-29-13=67-29+23=

53+9+17=18+53-18=47+26-27=

93-27+27=81-19+15=33+19+17=

65-19+15=43-23-17=69-21-19

58+19+12=34+17+36=57-19-11=

87-19-27=53+19+7=38+15+32=

练习二

88-7-12=32+43-4=34-30+59=

36+15-28=83-58+72=51-25+34=

30-1-16=32+66-88=34-30+59=

75-36+7=9+54-14=60+26-2=

30-1-16=21+59-55=81-73-3=

2+20-5=9+54-14=63-53+58=

5+5+74=22-2+35=81-73-3=

59+3-18=1+55+33=45-14+9=

5+5+74=60-24-15=28+16+47=

24+67+7=1+55+33=51+5+37=

练习二十二

71+10-51=88-7-12=28+16+47=

77+21-76=36+15-28=83-58+72=

71+10-51=23+44+23=32+66-88=

34-30+59=36+15-28=43+26-53=

60+26-2=30-1-16=32+66-88=

9+31-30=2+20-5=9+54-14=

60+26-2=32+43-4=22-2+35=

81-73-3=2+20-5=51-25+34=

45-14+9=5+5+74=22-2+35=

75-36+7=24+67+7=50-47+63=

练习二十三

62-18+15=24+75-83=11+70+7=

72+10+15=1+55+33=45T4+9=

21+59-55=88-7-12=28+16+47=

24+67+7=63-53+58=83-58+72=

71+10-51=21+5+22=59+3-18=

34-30+59=36+15-28=18+76-79=

60-24-15=30-1-16=32+66-88=

77-47+47=93-75+57=9+54-14=

60+26-2=37+38+12=15+5+17=

69+29+1=32+10+2=11+72+9=

练习二十四

27+14+10=39+44+6=12+10+21=

88+7+5=62+22+6=37+40+17=

81+11+2=47+5+41=11+2+34=

82+15+2=55+21+8=62+17+13=

33+24+2=66+11+14=84-23-4=

71-35-32=97-46-20=93-51-37=

78-31-23=72+19-88=36-33+21=

63-50+60=17+20+44=13+48+20=

79-27-24=50+2-39=4+52-26=

23-11+72=98-89+57=73+13-12=

练习二十五

94-88+74=46-22+46=98-9-54=

16+7-16=89-39+33=89-16-49=

45-32-1=62+30-63=69+12-28=

85-67+9=87-26-5=94-60-14=

55-44+10=55-21-26=7+8+35=

28+35-40=75-26-40=10+63-51=

30+19+9=70-28+44=35+17-5=

97-15-30=63-50+60=86-61+33=

47+45-30=40+8+34=50+2-39=

98-38-14=66-28+60=63+20+7=

练习二十六

73+13-12=58+29-79=30+68-65=

83+2-37=16+7-16=17+20+44=

26+19-25=87-26-5=62+30-63=

4+52-26=98-38-14=7+8+35=

94-60-14=94-88+74=58+29-79=

30+19+9=28+35-40=89-39+33=

17+20+44=63-50+60=70-28+44=

69+12-28=4+52-26=50+2-39=

86-61+33=55-44+10=94-88+74=

73+13-12=36-33+21=75-26-40=

练习二十七

89-39+33=16+7-16=79-27-24=

35+17-5=69+12-28=62+30-63=

98-89+57=47+45-30=55-44+10=

94-60-14=98-9-54=66-28+60=

75-26-40=28+35-40=45-32-1=

30+68-65=35+17-5=70-28+44=

87-26-5=26+19-25=47+45-30=

86-61+33=7+8+35=98-38-14=

66-28+60=72+19-88=30+19+9=

58+29-79=30+68-65=14+48+2=

练习二十八

35-23+63=52-21-25=29+10+51=

34+30-32=61+20+5=18+26+2=

35-23+63=25-12+54=80+2-35=

82-67-7=61+20+5=67-5-58=

8+63-49=38+8-32=80+2-35=

12+63-33=86-16-47=44-22+44=

8+63-49=99-15-12=46+7-12=

4+13-9=86-16-47=42+9+16=

74-68+26=10+47+18=46+7-12=

97-51+40=93-50+56=69+18-86=

练习二十九

74-68+26=85+3-19=52-21-25=

29+10+51=93-50+56=4+85-49=

18+26+2=35-23+63=52-21-25=

63-56+17=82-67-7=61+20+5=

18+26+2=73+19-70=38+8-32=

80+2-35=82-67-7=14+48+2=

44-22+44=8+63-49=38+8-32=

34+30-32=4+13-9=86-16-47=

44-22+44=25-12+54=10+47+18=

46+7-12=4+13-9=67-5-58=

练习三十

69+18-86=74-68+26=10+47+18=

12+63-33=29+10+51=93-50+56

69+18-86=99-15-12=35-23+63=

52-21-25=29+10+51=42+9+16=

61+20+5=18+26+2=46+10+1=

97-51+40=80+2-35=82-67-7=

92-32-48=85+3-19=8+63-49=

38+8-32=52-24+13=4+85-49=

86-16-47=44-22+44=16+64+19=

69+18-86=46+7-12=4+13-9=

练习三十一

5+81-69=29+10+51=74-68+26=

10+47+18=37-11-20=14+48+2=

93-50+56=69+18-86=24+43+3=

39+38+12=41+31-43=47-40+80=

82-35+3=64+14-57=33+53-59=

3+82+4=47-40+80=30+19-34=

60+14-73=67-22-10=3+82+4=

37+54-43=99-58+37=23+64-34=

67-22-10=56+36-73=26-19+50=

10+16+13=23+64-34=15-7+42=

练习三十二

49-30+24=53+9+17=10+16+13=

3+59-20=64-63+14=30+42-18=

53+9+17=29+3-19=92-24+28=

27-13+75=30+42-18=41+31-43=

58-29+5=50+25-48=27-13+75=

33+53-59=77-11-35=65-57+38=

50+25-48=60+14-73=100-22-8=

12+80-85=65-57+38=99-58+37=

20+5+38=59-23+29=12+80-85=

26-19+50=43+16+12=82-35+3=

练习三十三

59-23+29=49-30+24=76-46+63=

47-40+80=82-35+3=64-63+14=

22+69-10=3+82+4=47-40+80=

92-24+28=29+3-19=67-22-10=

3+82+4=58-29+5=41+31-43=

23+64-34=67-22-10=77-11-35=

33+53-59=10+16+13=23+64-34=

100-22-8=30+42-18=53+9+17=

10+16+13=20+5+38=27-13+75=

30+42-18=53+9+17=43+16+12=

练习三十四

50+25-48=27-13+75=30+42-18=

76-46+63=65-57+38=50+25-48=

27-13+75=53-(47-38)=30-(22-11)=

13-(2+6)=52-(51-47)=25-(11-2)=

44-(16+14)=85-(72+4)=11-(4-3)=

53-(38+11)=44-(16-8)=14-(87-78)=

76-(69-55)=41-67+55=27-(18+2)=

4-(1+2)=47-(2+35)=6-(3-1)=

20-(19+1)=50-(6-2)=29-(68-59)=

76-(25-23)=81-(37+35)=34-(61-56)=

练习三十五

58-(32+10)=33-(27+1)=68-(30+17)=

32-(45-23)=65-(64+1)=19-(4-2)=

54-(36-23)=19-(16-4)=26-(27-23)=

20-(75-69)=44-(41-34)=50-(37+9)=

49-(58-42)=81-(42+7)=29-(19-6)=

7-(74-69)=52-(83-42)=11-(72-68)=

12-(10-8)=43-(21+10)=46-(4-3)=

59-(28-17)=79-(15+33)=8-(2+1)=

18-(12+2)=54-(31-16)=30-(23-7)=

83-(39-11)=74-(19+13)=64-(57-54)=

练习三十六

91-(88-49)=78-(61+6)=92-(46+40)=

78-(4+9)=70-(47-46)=66-(42-35)=

46-(2+18)=37-(32-26)=53-(8-7)=

76-(18+23)=15-(5+1)=44-(36-29)=

84-(22-17)=78-(33+33)=39-(28-9)=

30-(17+9)=38-(36-8)=26-(96-88)=

19-(6+5)=69-(39-25)=1-(1+0)=

14-(8-2)=77-(23-19)=89-(62+21)=

22-(51-40)=86-(24+45)=91-(35-17)=

20-(6+11)=19-0-6)=83-(65-37)=

练习三十七

9-(10-6)=43-(15-8)=84-(48+14)=

56-(5-3)=33-(40-25)=86-(65-37)=

31-(41-27)=47-(7+25)=21-(4-1)=

9-(3-1)=93-(83+1)=71-(30+4)=

42-(27-3)=60-(35-14)=67-(35+13)=

28-(13+6)=14-(8-2)=77-(43-19)=

89-(62+21)=22-(41-23)=86-(24+45)=

91-(35-17)=20-(6+11)=19-(9-6)=

83-(65-37)=9-(10-6)=43-(15-8)=

84-(48+14)=56-(5-3)=33-(40-20)=

练习三十八

86-(65-37)=1-(1-1)=47-(7+25)=

21-(4-1)=9-(3-1)=93-(83+1)=

71-(30+4)=22+69-10=12+80-85=

65-57+38=50+25-48=29+3-19=

59-23+29=12+80-85=65-57+38=

39+38+12=82-35+3=59-23+29=

12+80-85=15-4+19=76-59+55=

76-8-12=25+16-27=85-58+36=

73-30-12=72-59+71=48+27-1=

93-57-17=25+16-27=32+50-36=

练习三十九

40+48-17=13+39+47=48+27-1=

92-41-1=68-9+31=72+10-15=

40+48-17=19-2-15=11-3+35=

56+33-50=68-9+31=83-42+21=

34-14+8=21+38-27=11-3+35=

17+17+47=12+67+6=44+49-1=

34-14+8=95-70+45=76-8-12=

64-31+31=12+67+6=59+10-50=

72-59+71=89-7-76=76-8-12=

25+16-27=32+50-36=53-48+82=

练习四十

72-59+71=48+27-1=92-41-1=

76-59+55=32+50-36=40+48-17=

19-2-15=73-30-12=92-41-1=

68-9+31=83-42+21=15-4+19=

19-2-15=11-3+35=17+17+47=

85-58+36=83-42+21=34-14+8=

95-70+45=93-57-17=17+17+47=

12+67+6=59+10-50=13+39+47=

95-70+45=76-8-12=25+16-27=

72+10-15=59+10-50=72-59+71=

练习四

48+27-1=56+33-50=39+35-40=

32-23+56=17+48-37=26+23+11=

12+15+19=69-32-17=57+23-62=

57+23-48=57+23-72=72-57+18=

72-57+48=72-48+18=100-28+35=

23+47-28=28+24-16=19+19-24=

22+28+21=81-32+18=21+19-8=

39+36-66二65-39+26=28+28-28=

34+47-15=91-19-56=70-17+38=

18+49+28=22+49-22=21-8+39=

练习四十二

66-27+19=38+14+19=29+27+26=

37-29+16=45+55-22=100-65+26=

100-39-45=24+47-26=88-66+49=

28+19+17=56+26-39=67+27-45=

51-22+39=73-37+38=29+36-29=

30-13+68=100-87+48=66-39+47=

29+27+26=37-29+16=45+55-22=

100-65=26=85-39+45=24+47-26=

88-66+49=28+19+17=56+26-39=

67+27-45=51-22+39=73-37+38=

练习四十三

29+36-29=30-13+68=100-87+48=

66-39+47=25-18+37=100-55+45=

75-25+47=55+19-48=72+69-132=

48-19+24=90-37-28=5+94-49=

75-38-19=49+24-65=39+45-57=

78-50+9=72-2-30=35+6-40=

47+9-20=17+3+15=75+50+14=

49+9-30=28+20-2=99-20+6=

100-30-7=16+15-7=70-30+33=

85-6-19=6+24-30=75-20-30=

练习四十四

62-5+7=81-29+17=45+27-14=

82-29+36=48+46-27=59-33-12=

74-62-10=71-36-10=94-54+15=

68-38+7=32-4-3=45-22-11=

88-45+28=89-33-3=61-44-6二

77-54-14=74-17-6=57-33-1=

76-71-3=91-49-36=89-60+13=

32-29-1=84-66-17=45+24+22=

34+41+17=98+1+1=12+31+30=

90+7+1=77+12+1=89+1+5=

练习四十五

25+52+1=53+12+1=37+58+2=

17+34+44=38+52+5=2+97+1=

43+5+12=27+63+7=63+17+19=

72+22+4=55+9+20=90+4+5=

27+21-24=69+16+14=3+83+13=

67+10+18=73+23+2=79+7+6=

14+19+27=71+17+5=19+71+8=

30+51-13=66-33+18=17+56-38=

5+74-49=56+40-62=65-26+20=

62-61+30=56+41-52=32+37-3=

练习四十六

81-35+29=99-79+6=，30-33+16二

69+30-88=52+47-87=49+11-8=

92-33+13=82+14-86=42+31-67=

29-13+66=17+24+45=95-88+40=

57+4-28=83-63-10=15+77+2=

28-19-2=26+5-1=58+21+16=

72-68-3=21+31-14=66+18+10=

80-13-37=85-78-3=16+83-72=

96-34-26=69-15-14=83-81-1=

73-70-2=86-30-10=98-67-5=

练习四十七

57-14-10=35-24-5=43-28-2=

30-13-12=72-15-9=63-33-16=

98-58-32=87+3+9=86+12+1=

44+23+29=63+25+3=89+4+5=

19+52+27=46+38+12=46+28+10=

42+33+7=43+12+37=87+4+5=

49+26+20=99-37+24=44+55-12=

21+9+50=68-23+26=8+89+1=

82+13+3=41-10-3=30-27-2=

47-25-17=74-9-3=30-22-2=

练习四十八

70-25-7=89-52-31=90-76-6二

87-54-13=90-85-1=68-59-7=

33-23-9=42-28-3=30-15-5=

70-42+33=58-30+64=35-28+2=

43-18+49=40+58-32=36+39-6=

21+24-15=22-14+83=90-67+57=

33+65-39=79-33+53=22-1+63=

64-18+28=73+10+2=17-9-6=

91+2+2=82-69-7=28-4+23=

79-44-11=67-33-3=85+16-8=

练习四十九

40+34+13=37+7+34=75-15+20=

10+11+77=76-46-22=17+5+12=

32+51-25=59-40-18=76-22+74=

44-2-12=90+7+2=22-18-10=

45+24+11=25+16-27=32+50-36=

40+48-17=21+38-27=48+27-1=

92-41-1=68-9+31=44+49-1=

40+48-17=19-2-15=11-3+35=

64-31+31=68-9+31=83-42+21=

34-14+8=89-7-76=11-3+35=

练习五十

17+17+47=12+67+6=53-48+82=

34-14+8=95-70+45=76-8-12=

15-4+19=12+67+6=59+10-50=

72-59+71=42-32-6=43-20-19=

63-20-19=75-68-4=36-17-6=

56-18-7=30-14-8=91-37-4=

61-51-5=35-14-5=93-19-21=

26+15-15=58-19-21=89-17+11=

65-12-28=78-25-25=24+17+16=

45-17+15=88-73+12=75-25+25=

练习五十一

68-61-5=78-39-24=82-61-20=

90-15-29=61+29-76=19+77-6=

78-22+27=60-40+72=22+50-47=

80+2-70=80+13-19=61+26-69=

51+38-84=98+1-33=11-7+75=

29+33-52=22-17+30=78+19-34=

64+8-19=4+23+42=62+30+7=

15+37+10=17+15+2=47+36+16=

55+14+27=40+34+14=84+2+4=

10+37+45=22+9+36=19+42+16=

练习五十二

67+28+2=44+40+5=80+10+9=

50+37+1=62-18-36=15-7-5=

17-5-10=95-85-8=47-26-7=

82-65-9=40-14-14=84-13-33=

78-54-10=79-71-7=18-1-12=

22-13-3=19-11-3=44-12-10=

80-10-69=55+38-33=35-6+38=

91-21+26=87-86+16=80-20+30=

14-4+22=46-19+29=85-69+70=

80-21+33=42+5-2=10-4+16=

练习五十三

85-28+27=17+45-24=57+1-2=

89-82+64=21-19+71=99+30+5=

53()-48-7=434-1-()=673-50-()=1

46-()-12=3243-8-()=1138+56-()=13

98-31+0=9719+15-()=5()+30-4=44

80+7+9=18+49+20=6+36+57=

45+5+4=35+54+9=27+65+7=

39+2+40=38+21+14=71+4+13=

54+14+12=27+46+3=83+1+4=

64+5+2=71+22+6=9+68+11=

练习五十四

86-62-11=80-47-25=9-2-4=

45-24-4=75-16-47=37-17-18=

41-14-14=27-10-5=72-6-19=

43-24-17=97-93-3=65-5