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There are 400 mixed operations in mathematics in grade three.
369/3+ 127-200*5

( 159+456)/205+ 146-52

2 100-2 1×53+2255

( 103-336÷2 1)× 15

800-(2000-9600÷8)

40×48-( 1472+328)÷5

(488+344)÷(202- 194)

2940÷28+ 136×7

605×(500-494)- 1898

(2886+66 18)÷(400-346)

9 125-( 182+35×22)

( 154-76)×(38+49)

3800- 136×9-798

( 104+246)×(98÷7)

9 18÷9×( 108-99)

(8645+40×40)÷5

(2944+864)÷( 1 13-79)

8080- 1877+ 188 1÷3

(50 1 1-43×85)+3397

2300- 1 122÷(2 1- 15)

8 16÷(4526-25 1× 18)

(7353+927)÷(80 1-792)

(28+ 172)÷(24+ 16)

6240÷48+63×48

950-28×6+666

86×(35+ 1 17÷9)

2500+(360- 160÷4)

16×4+6×3

39÷3+48÷6

24×4-42÷3

7×6- 12×3

56÷4+72÷8

2940÷28×2 1

920- 1680÷40÷7

690+47×52-398

148+3328÷64-75

360×24÷32+730

2 100-94+48×54

5 1+(2304-2042)×23

42 15+(436 1-7 16)÷8 1

(247+ 18)×27÷25

36-720÷(360÷ 18)

1080÷(63-54)×80

(528+9 12)×5-6 178

8528÷4 1×38-904

264+3 18-8280÷69

( 174+209)×26- 9000

8 14-(278+322)÷ 15

1406+735×9÷45

3 168-7828÷38+504

796-5040÷(630÷7)

285+(3000-372)÷36

546×(2 10- 195)÷3045 × 2/3 + 1/3 × 15

7/ 19 + 12/ 19 × 5/6

1/4 + 3/4 ÷ 2/3

8/7 × 2 1/ 16 + 1/2

10 1 × 1/5 – 1/5 × 2 1

50+ 160÷40 (58+370)÷(64-45)

120- 144÷ 18+35

347+45×2-4 160÷52

(58+37)÷(64-9×5)

95÷(64-45)

178- 145÷5×6+42 420+580-64×2 1÷28

8 12-700÷(9+3 1× 1 1) ( 136+64)×(65-345÷23)

85+ 14×( 14+208÷26)

(284+ 16)×(5 12-8208÷ 18)

120-36×4÷ 18+35

125*3+ 125*5+25*3+25

9999*3+ 10 1* 1 1*( 10 1-92)

(23/4-3/4)*(3*6+2)

3/7 × 49/9 - 4/3

8/9 × 15/36 + 1/27

12× 5/6 – 2/9 ×3

8× 5/4 + 1/4

6÷ 3/8 – 3/8 ÷6

4/7 × 5/9 + 3/7 × 5/9

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

7/8 + ( 1/8 + 1/9 )

9 × 5/6 + 5/6

3/4 × 8/9 - 1/3

7 × 5/49 + 3/ 14

6 ×( 1/2 + 2/3 )

8 × 4/5 + 8 × 1 1/5

3 1 × 5/6 – 5/6

9/7 - ( 2/7 – 10/2 1 )

920- 1680÷40÷7

690+47×52-398

97- 12×6+43

26×4- 125÷5

148+3328÷64-75

360×24÷32+730

2 100-94+48×54

5 1+(2304-2042)×23

42 15+(436 1-7 16)÷8 1

(247+ 18)×27÷25

36-720÷(360÷ 18)

1080÷(63-54)×80

(528+9 12)×5-6 178

8528÷4 1×38-904

264+3 18-8280÷69

( 174+209)×26- 9000

8 14-(278+322)÷ 15

1406+735×9÷45

3 168-7828÷38+504

796-5040÷(630÷7)

285+(3000-372)÷36

546×(2 10- 195)÷30

3/7 × 49/9 - 4/3

8/9 × 15/36 + 1/27

12× 5/6 – 2/9 ×3

6÷ 3/8 – 3/8 ÷6

4/7 × 5/9 + 3/7 × 5/9

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

7/8 + ( 1/8 + 1/9 )

9 × 5/6 + 5/6

3/4 × 8/9 - 1/3

7 × 5/49 + 3/ 14

6 ×( 1/2 + 2/3 )

8 × 4/5 + 8 × 1 1/5

3 1 × 5/6 – 5/6

9/7 - ( 2/7 – 10/2 1 )

5/9 × 18 – 14 × 2/7

4/5 × 25/ 16 + 2/3 × 3/4

14 × 8/7 – 5/6 × 12/ 15

17/32 – 3/4 × 9/24

3 × 2/9 + 1/3

5/7 × 3/25 + 3/7

1/5 × 2/3 + 5/6

9/22 + 1/ 1 1 ÷ 1/2

5/3 × 1 1/5 + 4/3

45 × 2/3 + 1/3 × 15

7/ 19 + 12/ 19 × 5/6

1/4 + 3/4 ÷ 2/3

8/7 × 2 1/ 16 + 1/2

10 1 × 1/5 – 1/5 × 2 1

50+ 160÷40

(58+370)÷(64-45)

120- 144÷ 18+35

347+45×2-4 160÷52

(58+37)÷(64-9×5)

95÷(64-45)

178- 145÷5×6+42

420+580-64×2 1÷28

8 12-700÷(9+3 1× 1 1)

2/3÷ 1/2- 1/4×2/5

2-6/ 13÷9/26-2/3

2/9+ 1/2÷4/5+3/8

10÷5/9+ 1/6×4

1/2×2/5+9/ 10÷9/20

5/9×3/ 10+2/7÷2/5

1/2+ 1/4×4/5- 1/8

3/4×5/7×4/3- 1/2

23-8/9× 1/27÷ 1/27

8×5/6+2/5÷4

1/2+3/4×5/ 12×4/5

8/9×3/4-3/8÷3/4

9405-2940÷28×2 1

920- 1680÷40÷7

690+47×52-398

148+3328÷64-75

360×24÷32+730

2 100-94+48×54

5 1+(2304-2042)×23

42 15+(436 1-7 16)÷8 1

(247+ 18)×27÷25

36-720÷(360÷ 18)

1080÷(63-54)×80

(528+9 12)×5-6 178

8528÷4 1×38-904

264+3 18-8280÷69

( 174+209)×26- 9000

8 14-(278+322)÷ 15

1406+735×9÷45

3 168-7828÷38+504

796-5040÷(630÷7)

285+(3000-372)÷36

546×(2 10- 195)÷30

I think it's a little too difficult. I deleted some, so many should be no problem!

Not enough to come to me!