( 1) 9*27

(3) (-2)-8- 14- 13

(4) (-7)*(- 1)/7+8

(5) (- 1 1)*4-(- 18)/ 18

(6) 4+(- 1 1)- 1/(-3)

(7) (- 17)-6- 16/(- 18)

(8) 5/7+(- 1)-(-8)

(9) (- 1)*(- 1)+ 15+ 1

( 10) 3-(-5)*3/(- 15)

( 1 1) 6*(- 14)-(- 14)+(- 13)

( 12) (- 15)*(- 13)-(- 17)-(-4)

( 13) (-20)/ 13/(-7)+ 1 1

( 14) 8+(- 1)/7+(-4)

( 15) (- 13)-(-9)* 16*(- 12)

( 16) (- 1)+4* 19+(-2)

( 17) (- 17)*(-9)-20+(-6)

( 18) (-5)/ 12-(- 16)*(- 15)

( 19) (-3)- 13*(-5)* 13

(20) 5+(-7)+ 17- 10

(2 1) (- 10)-(- 16)- 13*(- 16)

(22) (- 14)+4- 19- 12

(23) 5* 13/ 14/(- 10)

(24) 3* 1* 17/(- 10)

(25) 6+(- 12)+ 15-(- 15)

(26) 15/9/ 13+(-7)

(27) 2/(- 10)* 1-(-8)

(28) 1 1/(- 19)+(- 14)-5

(29) 19- 16+ 18/(- 1 1)

(30) (- 1)/ 19+(-5)+ 1

(3 1) (-5)+ 19/ 10*(-5)

(32) 1 1/(- 17)*(- 13)* 12

(33) (-8)+(- 10)/8* 17

(34) 7-(- 12)/(- 1)+(- 12)

(35) 12+ 12- 19+20

(36) (- 13)*(- 1 1)*20+(-4)

(37) 17/(-2)-2*(- 19)

(38) 1- 12*(- 16)+(-9)

(39) 13*(- 14)- 15/20

(40) (- 15)*(- 13)-6/(-9)

(4 1) 15*(- 1)/ 12+7

(42) (- 13)+(- 16)+(- 14)-(-6)

(43) 14* 12*(-20)*(- 13)

(44) 17-9-20+(- 10)

(45) 12/(- 14)+(- 14)+(-2)

(46) (- 15)- 12/(- 17)-(-3)

(47) 6-3/9/(-8)

(48) (-20)*(- 15)* 10*(-4)

(49) 7/(-2)*(-3)/(- 14)

(50) 13/2* 18*(-7)

Answer:

1 243

3 -37

4 9

5 -43

6 -(20/3)

7 -( 199/9)

8 54/7

9 17

10 2

1 1 -83

12 2 16

13 102 1/9 1

14 27/7

15 - 174 1

16 73

17 127

18 -(2885/ 12)

19 842

20 5

2 1 2 14

22 -4 1

23 -( 13/28)

24 -(5 1/ 10)

25 24

26 -(268/39)

27 39/5

28 -(372/ 19)

29 15/ 1 1

30 -(77/ 19)

3 1 -(29/2)

32 17 16/ 17

33 -( 1 17/4)

34 - 17

35 25

36 2856

37 59/2

38 184

39 -(73 1/4)

40 587/3

4 1 23/4

42 -37

43 43680

44 -22

45 -( 1 18/7)

46 -( 192/ 17)

47 145/24

48 - 12000

49 -(3/4)

50 -8 19

More: -5+2 1*8/2-6-59

68/2 1-8- 1 1*8+6 1

-2/9-7/9-56

4.6-(-3/4+ 1.6-4-3/4)

1/2+3+5/6-7/ 12

[2/3-4- 1/4*(-0.4)]/ 1/3+2

22+(-4)+(-2)+4*3

-2*8-8* 1/2+8/ 1/8

(2/3+ 1/2)/(- 1/ 12)*(- 12)

(-28)/(-6+4)+(- 1)

2/(-2)+0/7-(-8)*(-2)

( 1/4-5/6+ 1/3+2/3)/ 1/2

18-6/(-3)*(-2)

(5+3/8*8/30/(-2)-3

(-84)/2*(-3)/(-6)

1/2*(-4/ 15)/2/3

-3x+2y-5x-7y

-5+2 1*8/2-6-59

68/2 1-8- 1 1*8+6 1

-2/9-7/9-56

2.4-(-3/5)+(-3. 1)+4/5

(-6/ 13)+(-7/ 13)-(-2)

3/4-(- 1 1/6)+(-7/3)

1 1+(-22)-3×(- 1 1)

(-0. 1)÷ 1/2×(- 100)

2.4-(-3/5)+(-3. 1)+4/5

(-6/ 13)+(-7/ 13)-(-2)

3/4-(- 1 1/6)+(-7/3)

1 1+(-22)-3×(- 1 1)

(-0. 1)÷ 1/2×(- 100)

4.6-(-3/4+ 1.6-4-3/4)

1/2+3+5/6-7/ 12

[2/3-4- 1/4*(-0.4)]/ 1/3+2

22+(-4)+(-2)+4*3

-2*8-8* 1/2+8/ 1/8

(2/3+ 1/2)/(- 1/ 12)*(- 12)

(-28)/(-6+4)+(- 1)

2/(-2)+0/7-(-8)*(-2)

( 1/4-5/6+ 1/3+2/3)/ 1/2

18-6/(-3)*(-2)

(5+3/8*8/30/(-2)-3

(-84)/2*(-3)/(-6)

1/2*(-4/ 15)/2/3

-3x+2y-5x-7y。 (-8)-(- 1)

45+(-30)

- 1.5-(- 1 1.5)

- 1/4-(- 1/2)

15-[ 1-(20-4)]

-40-28-(- 19)+(-24)

22.54+(-4.4)+(- 12.54)+4.4

(2/3- 1/2)-( 1/3-5/6)

[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)

5+2 1*8/2-6-59

68/2 1-8- 1 1*8+6 1

-2/9-7/9-56

4.6-(-3/4+ 1.6-4-3/4)

1/2+3+5/6-7/ 12

[2/3-4- 1/4*(-0.4)]/ 1/3+2

22+(-4)+(-2)+4*3

-2*8-8* 1/2+8/ 1/8

(2/3+ 1/2)/(- 1/ 12)*(- 12)

(-28)/(-6+4)+(- 1)

2/(-2)+0/7-(-8)*(-2)

( 1/4-5/6+ 1/3+2/3)/ 1/2

18-6/(-3)*(-2)

(5+3/8*8/30/(-2)-3

(-84)/2*(-3)/(-6)

1/2*(-4/ 15)/2/3

- 1+2-3+4-5+6-7

-50-28+(-24)-(-22)

- 19.8-(-20.3)-(+20.2)- 10.8

0.25- +(- 1 )-(+3 )

- 1-〔 1-( 1-0.6÷3)〕×〔2-(-3)×(-4)〕

0÷(-4)-42-(-8)÷(- 1)3

-32-(-3) 2-(-3)3+(- 1)6

3×(-2)2+(-2×3)2+(-2+3)2

(- 12)÷4×(-6)÷2

(- 12)÷4×(-6)×2

75÷〔 138÷( 100-54)〕

85×(95- 1440÷24)

80400-(4300+870÷ 15)

240×78÷( 154- 1 15)

1437×27+27×563

〔75-( 12+ 18)〕÷ 15

2 160÷〔(83-79)× 18〕

280+840÷24×5

325÷ 13×(266-250)

85×(95- 1440÷24)

58870÷( 105+20×2)

1437×27+27×563

8 1432÷( 13×52+78)

[37.85-(7.85+6.4)] ×30

156×[( 17.7-7.2)÷3]

(947-599)+76×64

36×(9 13-276÷23)

-(3.4 1.25×2.4)

0.8×〔 15.5-(3.2 1 5.79)〕

(3 1.8 3.2×4)÷5

194-64.8÷ 1.8×0.9 36.72÷4.25×9.9

3.4 16÷(0.0 16×35)

0.8×[( 10-6.76)÷ 1.2]

( 136+64)×(65-345÷23)

(6.8-6.8×0.55)÷8.5

0. 12× 4.8÷0. 12×4.8

(58+37)÷(64-9×5)

8 12-700÷(9+3 1× 1 1)

(3.2× 1.5+2.5)÷ 1.6

85+ 14×( 14+208÷26)

120-36×4÷ 18+35

(284+ 16)×(5 12-8208÷ 18)

9.72× 1.6- 18.305÷7

4/7÷[ 1/3×(3/5-3/ 10)]

(4/5+ 1/4)÷7/3+7/ 10

12.78-0÷( 13.4+ 156.6 )

37.8 12-700÷(9+3 1× 1 1)

( 136+64)×(65-345÷23)

3.2×( 1.5+2.5)÷ 1.6

85+ 14×( 14+208÷26)

(58+37)÷(64-9×5)

(6.8-6.8×0.55)÷8.5

(284+ 16)×(5 12-8208÷ 18)

0. 12× 4.8÷0. 12×4.8

(3.2× 1.5+2.5)÷ 1.6

120-36×4÷ 18+35

10. 15- 10.75×0.4-5.7

5.8×(3.87-0. 13)

+4.2×3.74 347+45×2-4 160÷52

32.52-(6+9.728÷3.2)×2.5 87(58+37)÷(64-9×5)

[(7. 1-5.6)×0.9- 1. 15] ÷2.5 (3.2× 1.5+2.5)÷ 1.6

5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷( 12-7.2)-6

3.2×6+( 1.5+2.5)÷ 1.6 (3.2× 1.5+2.5)÷ 1.6

5.8×(3.87-0. 13)+4.2×3.74

33.02-( 148.4-90.85)÷2.5

[|-98|+76+(-87)]-23[56+(-75)-(7)]-(8+4+3)

-(-89)+|-87|-23+[-75-(7)+76]-( 10+39-24)

|-9.8|+(-4.6)-[8.7-(- 1.3)]+(-5.4)-(-0.2)

[-(-84)+46]-|-9. 1|+(+ 1.9)

[-(-90)+(-34)]-(+43)+(-57)+ 10

5+2 1+8/2-6-59

68/2 1-8- 1 1-8+6 1

-2/9-7/9-56

4.6-(-3/4+ 1.6-4-3/4)

1/2+3+5/6-7/ 12

[2/3-4- 1/4+(-0.4)]/ 1/3+2

22+(-4)+(-2)+4-3

-2+8-8- 1/2+8/ 1/8

(2/3+ 1/2)/(- 1/ 12)+(- 12)

2/(-2)+0/7-(-8)-(-2)

( 1/4-5/6+ 1/3+2/3)/ 1/2

18-6/(-3)+(-2)

(5+3/8-8/30/(-2)-3

(-84)/2+(-3)/(-6)

1/2-(-4/ 15)/2/3

(-5)-(+3)+(-9)-(-7)

(-5)+(+8)-(+2)-(-3)

5-(-3 )-(+7)-2

(-2 1)+(+ 16)-(- 13)-(+7)+(-6)

2 -(- )+(-0.5)+(+2)-(+ )-2

(-7)-(+5)+(+3)-(-9)

-(+2 )-(- 1 )-(+3 )

- 14 5 (-3)=- 12

- 12 (-7) (-5) (-6)

23.33-(+76.76)

(-6-24.3)-(- 12+9. 1)+(0-2. 1)

6+(7-8)

(-78)+25+26+27

(-3)+(-2)+(- 1)

39+28+26- 125

[2/3-4- 1/4+(-0.4)]+ 1/3+2

22+(-4)+(-2)+4-3

(-2)+7-(- 16)-(-3)

(-5)-(+3)+(-9)-(-7)

(- 1/4)+(-5/6)-(- 1/3)+2/3- 1/6

2/3+(- 1/2)-(- 1/3)+ 1/4

(-5)+(-8)-(-2)-3

(-2 1)+(+ 16)-(- 13)-(+7)+(-6)

(-2/3)+(- 1/3)+3/4+(- 1/4)

(-0.73)+(-0.62)-(+0.75)

(- 19)+(- 1 1)-(-33)+27

(-6.4)+(-3.6)-(- 12.5)+4.5

(-8 1)+(- 19)-27+33

(-3.2)-(-6.2)+(-5. 1)+(-4.9)

(-6.9)+(-3. 1)+(+2.7)+(-2. 1)

1)-23÷ 1 ×(- 1 )2÷( 1 )2;

(2)- 14-(2-0.5)× ×[( )2-( )3];

(3)- 1 ×[ 1-3×(- )2]-( )2×(-2)3÷(- )3

(4)(0. 12+0.32) ÷ [-22+(-3)2-3 × ];

(5)-6.24×32+3 1.2×(-2)3+(-0.5 1) ×624.

[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)

5+2 1*8/2-6-59

68/2 1-8- 1 1*8+6 1

-2/9-7/9-56

4.6-(-3/4+ 1.6-4-3/4)

1/2+3+5/6-7/ 12

[2/3-4- 1/4*(-0.4)]/ 1/3+2

22+(-4)+(-2)+4*3

-2*8-8* 1/2+8/ 1/8

(2/3+ 1/2)/(- 1/ 12)*(- 12)

(-28)/(-6+4)+(- 1)

2/(-2)+0/7-(-8)*(-2)

( 1/4-5/6+ 1/3+2/3)/ 1/2

18-6/(-3)*(-2)

(5+3/8*8/30/(-2)-3

(-84)/2*(-3)/(-6)

1/2*(-4/ 15)/2/3

-3x+2y-5x-7y

75÷〔 138÷( 100-54)〕 85×(95- 1440÷24)

80400-(4300+870÷ 15) 240×78÷( 154- 1 15)

1437×27+27×563 〔75-( 12+ 18)〕÷ 15

2 160÷〔(83-79)× 18〕 280+840÷24×5

325÷ 13×(266-250) 85×(95- 1440÷24)

58870÷( 105+20×2) 1437×27+27×563

8 1432÷( 13×52+78) [37.85-(7.85+6.4)] ×30

156×[( 17.7-7.2)÷3] (947-599)+76×64

36×(9 13-276÷23) [ 192-(54+38)]×67

[(7. 1-5.6)×0.9- 1. 15]÷2.5 8 1432÷( 13×52+78)

5.4÷[2.6×(3.7-2.9)+0.62] (947-599)+76×64 60-(9.5+28.9)]÷0. 18 2.88 1÷0.43-0.24×3.5 20×[(2.44- 1.8)÷0.4+0. 15] 28-(3.4 / kloc-0/.25×2.4) 0.8×〔 15.5-(3.2 1 5.79)〕 (3 1.8 3.2×4)÷5 194-64.8÷ 1.8×0.9 36.72÷4.25×9.9 3.4 16÷(0.0 16×35) 0.8×[( 10-6.76)÷ 1.2]

( 136+64)×(65-345÷23) (6.8-6.8×0.55)÷8.5

0. 12× 4.8÷0. 12×4.8 (58+37)÷(64-9×5)

8 12-700÷(9+3 1× 1 1) (3.2× 1.5+2.5)÷ 1.6

85+ 14×( 14+208÷26) 120-36×4÷ 18+35

(284+ 16)×(5 12-8208÷ 18) 9.72× 1.6- 18.305÷7

4/7÷[ 1/3×(3/5-3/ 10)] (4/5+ 1/4)÷7/3+7/ 10

12.78-0÷( 13.4+ 156.6 ) 37.8 12-700÷(9+3 1× 1 1) ( 136+64)×(65-345÷23) 3.2×( 1.5+2.5)÷ 1.6

85+ 14×( 14+208÷26) (58+37)÷(64-9×5)

(6.8-6.8×0.55)÷8.5 (284+ 16)×(5 12-8208÷ 18)

0. 12× 4.8÷0. 12×4.8 (3.2× 1.5+2.5)÷ 1.6

120-36×4÷ 18+35 10. 15- 10.75×0.4-5.7

5.8×(3.87-0. 13)+4.2×3.74 347+45×2-4 160÷52

32.52-(6+9.728÷3.2)×2.5 87(58+37)÷(64-9×5)

[(7. 1-5.6)×0.9- 1. 15] ÷2.5 (3.2× 1.5+2.5)÷ 1.6

5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷( 12-7.2)-6

3.2×6+( 1.5+2.5)÷ 1.6 (3.2× 1.5+2.5)÷ 1.6

5.8×(3.87-0. 13)+4.2×3.74

33.02-( 148.4-90.85)÷2.5

(1) Calculation problem:

( 1)23+(-73)

(2)(-84)+(-49)

(3)7+(-2.04)

(4)4.23+(-7.57)

(5)(-7/3)+(-7/6)

(6)9/4+(-3/2)

(7)3.75+(2.25)+5/4

(8)-3.75+(+5/4)+(- 1.5)

(9)(- 17/4)+(- 10/3)+(+ 13/3)+( 1 1/3)

( 10)(- 1.8)+(+0.2)+(- 1.7)+(0. 1)+(+ 1.8)+(+ 1.4)

( 1 1)(+ 1.3)-(+ 17/7)

( 12)(-2)-(+2/3)

( 13)|(-7.2)-(-6.3)+( 1. 1)|

( 14)|(-5/4)-(-3/4)|-| 1-5/4-|-3/4|)

( 15)(-2/ 199)*(-7/6-3/2+8/3)

( 16)4a)*(-3b)*(5c)* 1/6

1.3/7 × 49/9 - 4/3

2.8/9 × 15/36 + 1/27

3. 12× 5/6 – 2/9 ×3

4.8× 5/4 + 1/4

5.6÷ 3/8 – 3/8 ÷6

6.4/7 × 5/9 + 3/7 × 5/9

7.5/2 -( 3/2 + 4/5 )

8.7/8 + ( 1/8 + 1/9 )

9.9 × 5/6 + 5/6

10.3/4 × 8/9 - 1/3

0. 12χ+ 1.8×0.9=7.2 (9-5χ)×0.3= 1.02 6.4χ-χ=28+4.4

1 1.7 × 5/49 + 3/ 14

12.6 ×( 1/2 + 2/3 )

13.8 × 4/5 + 8 × 1 1/5

14.3 1 × 5/6 – 5/6

15.9/7 - ( 2/7 – 10/2 1 )

16.5/9 × 18 – 14 × 2/7

17.4/5 × 25/ 16 + 2/3 × 3/4

18. 14 × 8/7 – 5/6 × 12/ 15

19. 17/32 – 3/4 × 9/24

20.3 × 2/9 + 1/3

2 1.5/7 × 3/25 + 3/7

22.3/ 14 ×× 2/3 + 1/6

23. 1/5 × 2/3 + 5/6

24.9/22 + 1/ 1 1 ÷ 1/2

25.5/3 × 1 1/5 + 4/3

26.45 × 2/3 + 1/3 × 15

27.7/ 19 + 12/ 19 × 5/6

28. 1/4 + 3/4 ÷ 2/3

29.8/7 × 2 1/ 16 + 1/2

30. 10 1 × 1/5 – 1/5 × 2 1

3 1.50+ 160÷40 (58+370)÷(64-45)

32. 120- 144÷ 18+35

33.347+45×2-4 160÷52

34(58+37)÷(64-9×5)

35.95÷(64-45)

36. 178- 145÷5×6+42 420+580-64×2 1÷28

37.8 12-700÷(9+3 1× 1 1) ( 136+64)×(65-345÷23)

38.85+ 14×( 14+208÷26)

39.(284+ 16)×(5 12-8208÷ 18)

40. 120-36×4÷ 18+35

4 1.(58+37)÷(64-9×5)

42.(6.8-6.8×0.55)÷8.5

43.0. 12× 4.8÷0. 12×4.8

44.(3.2× 1.5+2.5)÷ 1.6 (2)3.2×( 1.5+2.5)÷ 1.6

45.6- 1.6÷4= 5.38+7.85-5.37=

46.7.2÷0.8- 1.2×5= 6- 1. 19×3-0.43=

47.6.5×(4.8- 1.2×4)= 0.68× 1.9+0.32× 1.9

48. 10. 15- 10.75×0.4-5.7

49.5.8×(3.87-0. 13)+4.2×3.74

50.32.52-(6+9.728÷3.2)×2.5

5 1.-5+58+ 13+90+78-(-56)+50

52.-7*2-57/(3

53.(-7)*2/( 1/3)+79/(3+6/4)

54. 123+456+789+98/(-4)

55.369/33-(-54-3 1/ 15.5)

56.39+{3x[42/2x(3x8)]}

57.9x8x7/5x(4+6)

58. 1 1x 22/(4+ 12/2)

59.94+(-60)/ 10