Mathematics by Age Restriction

Age Restriction

This page contains a set of links to mathematical exercises. They are ordered by age restriction. For each age, there are corresponding exercises grouped into separate categories. Expand the lists and see the proposed options for mathematical examples.

Recommended for children from five years old

Integer Examples

Beginner 1.1 ip

6+3=9

Beginner 2.1 ip

5-2=3

Beginner 3.1 ip

6-3=3

Step-by-step Tasks

3+2=5

1+3=4

3+3=6

1+3=4

1+9=10

5-2=3

4-1=3

7-1=6

4-1=3

8-2=6

6-3=3

Recommended for children from six years

Integer Examples

5+15=20

20-8=12

16-4=12

3+5-4=4

Step-by-step Tasks

5+2=7

1+3=4

3+6=9

4+5=9

6+0=6

9+5=14

5+3=8

6+7=13

3+8=11

5+7=12

8+7=15

3+3=6

5+8=13

9+8=17

5-4=1

10+4=14

7+10=17

10-4=6

10-5=5

9-2=7

14-2=12

14-2=12

13-6=7

11-7=4

16-1=15

17-8=9

10-8=2

13-9=4

15-0=15

12-10=2

Recommended for children from seven years

Integer Examples

8-(1+6)=1

22+21=43

95-41=54

78+22=100

16+1-7=10

10-(7+2)=1

Step-by-step Tasks

10+8=18

15+10=25

9+0=9

12+14=26

0+13=13

0+14=14

5+5=10

18-15=3

0+25=25

19+6=25

7+0=7

10-9=1

5-1=4

12-2=10

10-3=7

24-14=10

8-5=3

26-16=10

11-7=4

16-6=10

1×1=1

9×2=18

2×7=14

5÷1=5

Comparisons

Natural 1.1 ip

9 > 2

Natural 2.1 ip

8-2 < 1+6

Language Exercises

Russian Vocabulary 1.1

г рох

Recommended for children from eight years

Integer Examples

20-2=18

221+746=967

504-109=395

90+444=534

58-46+67=79

8+(9+2)=19

11×4=44

78÷39=2

7×5=35

56+30=86

92-14=78

50+30=80

Step-by-step Tasks

24+6=30

28+2=30

18+0=18

19+12=31

40+50=90

14+16=30

7+0+10=17

9-8=1

21-17=4

26-9=17

11-7=4

37-17=20

100-70=30

3×1=3

1×2=2

4×9=36

2×0=0

5×0=0

5×7=35

5×10=50

10×6=60

7×5=35

8×7=56

4×3=12

8×5=40

1×8=8

3×7=21

10×9=90

0×9=0

10×2=20

10×2=20

12÷2=6

16÷2=8

27÷3=9

18÷2=9

24÷4=6

8÷1=8

0÷5=0

18÷2=9

5÷1=5

24÷6=4

40÷5=8

63÷7=9

0÷4=0

5÷1=5

72÷8=9

35÷7=5

36÷9=4

72÷8=9

90÷9=10

80÷10=8

Comparisons

10÷10 < 6÷1

61 < 75

61+7 > 49-4

10×1 > 8÷8

Equations

Linear 1.1 ip

1+x=7

Linear 2.1 ip

x×2=10

Language Exercises

Russian Vocabulary 1.2

з бавы

Russian Vocabulary 2.1

лфавит

Russian Vocabulary 3.1

Апрел

English Vocabulary 1.1

d ty

English Vocabulary 2.1

s ze

Lexicon 1.1

s ve [keep]

Lexicon 2.1

fi d [discover]

Recommended for children from nine years

Integer Examples

70-40+16=46

318-27+316=607

49+(31+12)=92

6×(8÷2)÷3=8

28×12=336

648÷4=162

244÷4=61

2×30÷6=10

100÷(4×5)=5

6×(2×9)÷3=36

60÷9=6(6)

8129+385=8514

2694-2070=624

9000+1000=10000

54×5=270

40÷2=20

87-34÷2=70

26-60÷2÷15=24

64÷4=16

41÷7=5(6)

Step-by-step Tasks

14×2=28

11×6=66

14×3=42

2×15=30

4×12=48

20×5=100

12×3=36

20×5=100

5×16=80

11×6=66

12×7=84

7×15=105

17×8=136

3×6=18

14×9=126

15×7=105

20×8=160

50×4=200

10×11=110

24÷2=12

0÷11=0

24÷3=8

2÷2=1

80÷4=20

45÷5=9

24÷6=4

36÷2=18

20÷10=2

114÷6=19

21÷7=3

91÷7=13

88÷8=11

40÷5=8

18÷9=2

32÷8=4

420÷20=21

135÷9=15

32÷4=8

Comparisons

73-19 > 42-10

125 < 539

400+529 > 860-406

26÷2 > 80÷10

Equations

Linear 1.2 ip

94-x=14

Linear 2.2 ip

3×x=72

Linear 3.1 ip

4+3×x=10

Language Exercises

Russian Vocabulary 1.3

ант гуманный

Russian Vocabulary 2.2

ртист

Russian Vocabulary 3.2

тольк

English Vocabulary 3.1

fa m

10+

Recommended for children from ten years

Integer Examples

654-11=643

82493+27507=110000

950543-250543=700000

168275+157510=325785

306+(286+124)=716

192÷(24÷2)=16

20×245=4900

8435÷35=241

8408÷8=1051

456÷3÷2=76

120÷(4×2)=15

17×(39÷3)÷221=1

100÷17=5(15)

347811+402227=750038

395396-182878=212518

160633+200447=361080

8264×3=24792

1397×50=69850

567÷9=63

80+30÷3×2=100

30×10+498=798

158×6+540÷20=975

14-28÷(33-26)=10

984÷2=492

284÷16=17(12)

Comparisons

Natural 0.3 ip

744÷8 > 5×3

Natural 1.4 ip

897165 > 204909

Natural 2.4 ip

385288+74712 < 994888-126225

Natural 3.3 ip

15×4 > 8×5

Equations

x-4=6

x+134=724

41×x=410

18+48÷x=20

(6-x)×4=8

Rounding

Round 1.1 ip

713≈71

Round 1.2 ip

1953≈20

Round 2.1 ip

927-21≈91

Language Exercises

Russian Vocabulary 2.3

нос рог

English Vocabulary 1.2

ch at

English Vocabulary 2.2

pau e

Lexicon 1.2

u ban [municipal]

Lexicon 2.2

l kely [probably]

Infinitive 1.1

smite smote [smite]

11+

Recommended for children from the age of eleven

Integer Examples

Beginner 0.5 ip

689169+235946=925115

Beginner 4.5 ip

561273+249458-799031=11700

Beginner 5.5 ip

990636-(121295+199341)=670000

Conversant 1.1 in

7-7=0

Conversant 1.5 in

-74568-307000=-381568

8-5-2=1

500÷100=5

50×6÷5=60

2×(4×500)=4000

6336÷4÷(66÷6)=144

436÷67=6(34)

48333×171=8264943

7826÷13=602

780÷4-95=100

4704÷28+2280÷760=171

290×16-3379=1261

584×95-1280÷128=55470

Numeracy 3.2 ip

(46+299)÷(21+2)=15

Numeracy 3.3 ip

(2566-64)×(3907-3885)=55044

Divisor_ENG 1.3 ip

2847÷39=73

Remainder_ENG 1.3 ip

238÷24=9(22)

Decimal Examples

8.2-0.3-1=6.9

70.2-39.4+6=36.8

5.2+3.8=9

86.5-39.9=46.6

1.7+1.5+1.4=4.6

67.4+31.9-46.5=52.8

4.2-(8.9-6)=1.3

57-(33.5+3.5)=20

1.1÷0.2=5.5

6×1.1=6.6

16.4÷0.5=32.8

15.6÷0.8=19.5

Divisional_ENG 1.1 dp

95.2÷8=11.9

Fraction Examples

Numerator 1.1 fp

1/4+3/4=1/1

Comparisons

Natural 0.4 ip

300830+407403 < 880295-31818

Natural 3.4 ip

512000÷256 < 906696÷28

-7 < -2

9 > -4

1+1 > -1-9

2×(-5) < 4×(-2)

78.7 > 29.7

42+3 > 80.8-35.9

1/2 > 1/6

4/1 > 3/1

9/10-1/10 > 1/4+1/4

Equations

57÷(x-1)=19

x×90-990=0

960-x×46=40

68÷(14+x)=2

300÷(3+x)=100

x-10=-4

-x×5=-10

Rounding

86.6≈87

2.8+54.2≈57

942≈94

9002≈90

834224÷272≈3

822773≈823

1581+2585≈42

388504+12707≈401

975÷15≈7

9646÷2≈48

3238×200≈648

Language Exercises

Russian Vocabulary 1.4

экспл атация

Russian Vocabulary 3.3

пасный

English Vocabulary 1.3

cr am

English Vocabulary 2.3

ositive

English Vocabulary 3.2

fr end

Lexicon 1.3

dis olve [melt]

Infinitive 2.1

mislay [mislay]

12+

Recommended for children from the age of twelve

Integer Examples

-5-2=-7

12+(8-4)=16

-48-(-43-79)=74

1+9=10

-39+89=50

5-4+9=10

-36+10-42=-68

0-(-4-1)=5

-11-(-7-14)=10

90-(100+10)=-20

(10+2)+(6-8)=10

-(12+10)+(16+5)=-1

-(50-68)-(67+38)=-87

10720÷(62042÷926)×25=4000

247×239=59033

214200÷357=600

450000÷150=3000

250×2÷10=50

80×(2×25)=4000

240×(6÷3)×950=456000

51004×1300=66305200

60667÷19=3193

-12÷2-75÷3=-31

-20+5×2=-10

-9-7×3-43=-73

(6-66)÷(-2-4)=10

3×(-7)=-21

8×(-8)=-64

-48÷(-2)÷4=6

(-80÷2)÷(-4)=10

-2×(48÷(-6))÷8=2

27246÷19=1434

Decimal Examples

64.5+15.95=80.45

1.07+25=26.07

0.88+53.43+11.69=66

95.31-(35.34+44.97)=15

-2+7.7=5.7

-77.5+41=-36.5

1.4+3.9=5.3

33.7-5.7=28

0.6-4.8+5.1=0.9

0.3-88.7+77.4=-11

5.2-(8+1.7)=-4.5

-40.3-(8.8+4)=-53.1

72÷5=14.4

39.78÷2.25=17.68

(46.3÷92.6)×6.8=3.4

2.25×2.4=5.4

0.62÷2.48=0.25

1.2÷0.5=2.4

1.5÷5×94=28.2

1.2÷(12÷6)=0.6

74.1÷9.5-0.2=7.6

0.8÷0.5+21.7=23.3

16.3-32×2.7÷9=6.7

12-6.8÷(85.7-77.2)=11.2

Negatory 1.1 dn

68.3-70.4÷12.8=62.8

Negatory 2.1 dn

-12×0.3+1.6÷0.8=-1.6

Residual_ENG 1.1 dp

58÷10=5.8

Divisional_ENG 1.2 dp

0.14÷2.8=0.05

Fraction Examples

8/9-1/9-1/3=4/9

2/3+131/15=47/5

7/6+23/78=19/13

3/10-1/10+3/10=1/2

39/5-29/5-82/75=68/75

Numerator 3.1 fp

2/9+(1/3-1/3)=2/9

Numerator 3.2 fp

107/24-(9/14+139/56)=4/3

-1/8+(-1/8-1/8)=-3/8

7/10-1/10=3/5

3/10-3/5+3/10=0/1

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

3/2×10/7=15/7

139/8÷973/44=11/14

3/2×1/3÷9/8=4/9

72/81=8/9

1200/50=24/1

13/2-1/3÷2/9=5/1

Comparisons

77 < 82

-441+457 = -634+650

-61 < 86

450 > -610

-4+57 > 24+13

-872+812 > -336-83

-99÷3 < 2×42

-25×4 < 990÷9

59.7 < 76.5

6.25×0.64 = 32.28÷8.07

80.2 > 13.27

73.296 = 73.296

879.642 < 950.264

57.48+37.52 > 30.98+13.93

Point 2.3 dp

92-90.378 = 0.592+1.03

99÷11 > 0.8×2.5

29.9÷10 < 18.9÷1.26

-47.3 < 47.4

58.53-7.3 > -81.46+100

-1.8 > -42

-63.97 < 63.96

-1.2+100 > 54.4-37.4

-33.13-16.15 < -17.65-31.62

6×(-2.8) < -1.2×12.5

2.5×3 < -15×(-2.3)

1/5+3/5 > 7/10-1/10

3/5+27/5 > 1/4+1/4

1703/128 > 71/352

405/44-157/28 < 1/2+179/28

Improper 2.3 fp

177/2-4391/974 > 277/5-107/5

Improper 3.1 fp

2/3×1/2 > 7/10×2/7

Improper 3.2 fp

15/2÷45/38 = 3/4÷9/76

Descent 1.1 fn

-1/6 > -3/4

Descent 1.2 fn

16/53 < 1/1

Descent 2.1 fn

-1/2-1/3 < -4/9+7/9

Equations

3×(-x-8)=0

81-x=21

99-x=1

114-x=-4

-x×(-2)=-56

x×31=806

1+5÷x=0

33÷x-3=0

3÷(-x+9)=-3

-36÷(98+x)=18

Rounding

80.9-15.9≈65

21.52≈21.5

83.78≈83.8

24.995≈25

52.06+0.95≈53

79.836+3.283≈83.12

83÷9.1≈9

1.61×48.93≈78.8

Language Exercises

Russian Vocabulary 2.4

напр вление

English Vocabulary 3.3

cl mbing

Lexicon 2.3

unf irly [unjustly]

Infinitive 1.2

sleep slept [sleep]

Infinitive 3.1

sworn [swear]

13+

Recommended for adolescents from the age of thirteen

Integer Examples

Conversant 0.4 in

-74-280+927=573

Conversant 0.5 in

-838313+779082=-59231

Conversant 1.4 in

78-280=-202

Conversant 2.4 in

0-413-496=-909

Conversant 2.5 in

232056+913665-686147=459574

Conversant 3.4 in

287-(582+82)=-377

Conversant 3.5 in

-509896-(160000+72654)=-742550

Conversant 4.4 in

-(707+363)+(546-286)=-810

Conversant 4.5 in

-(391946+433469)+(772757-500569)=-553227

8480012÷659=12868

-423-21÷3×81=-990

503-300÷100=500

-170-19×6-136=-420

600-27÷(10+17)=599

-528÷(-16)×13=429

72÷3=24

-36×(-2)×9=648

(1000÷4)÷25=10

2×(-7×(-5))×(-5)=-350

Divisor_ENG 1.5 ip

9900000÷300=33000

Decimal Examples

Partitive 0.4 dp

246.738+60-150.738=156

Partitive 1.4 dp

588.902-74.629=514.273

Partitive 2.4 dp

399.054-63.768+347.714=683

Partitive 3.4 dp

537.051-(295.368-167.605)=409.288

Split 0.3 dn

12+46=58

Split 0.4 dn

-582.667+45+112.667=-425

Split 1.3 dn

95-11.43=83.57

Split 1.4 dn

423.979+231.642=655.621

Split 2.3 dn

-11.75-31.43+97.77=54.59

Split 2.4 dn

-88+222.698+535.302=670

Split 3.3 dn

-70-(-97.33-62.67)=90

Split 3.4 dn

-403.384+(226-568.333)=-745.717

50÷20=2.5

0.168÷0.014=12

86.64÷30.4=2.85

2.208÷(2.4×0.32)=2.875

1.28×3.125=4

3÷1.875=1.6

1.1×0.04=0.044

0.8×0.75÷30=0.02

3.125×12.8×0.88=35.2

0.6÷(27.05÷5.41)=0.12

15.36÷(2.4÷3.125)=20

2.5÷(0.72+1.78)×9=9

50.4÷6.72-3.27=4.23

1.2×0.005+84.66=84.666

Definition 2.2 dp

0.77×15+56.25×0.16=20.55

Definition 2.3 dp

37.337+26.01÷15÷1.734=38.337

Definition 3.2 dp

(0.5+0.7)×(4.3+39.7)=52.8

Negatory 0.1 dn

55.8+12.5×0.8-58.9=6.9

Negatory 0.2 dn

-21.28+41.6÷1.25=12

Negatory 1.2 dn

-73.12+31.92÷11.2=-70.27

Negatory 1.3 dn

-26.24-34.56÷6=-32

Negatory 2.2 dn

100-10÷2.5-79=17

Negatory 2.3 dn

7.501+32×0.024×1.25=8.461

Negatory 3.1 dn

3.3÷(0.5-0.6)÷0.4=-82.5

Negatory 3.2 dn

26.73-63.36÷(38.2-37.56)=-72.27

Residual_ENG 1.2 dp

54÷50=1.08

Divisional_ENG 1.3 dp

28.98÷5.152=5.625

Fraction Examples

Numerator 0.3 fp

73/9+(2675/549+1099/61)=31/1

Numerator 1.3 fp

44258/575-43918/575=68/115

Numerator 2.3 fp

129/5-29/5+306/181=3926/181

Numerator 3.3 fp

84037/891-(14552/891-13378/891)=93/1

Denominator 0.2 fn

-189/29-(461/58-507/58)=-166/29

Denominator 1.2 fn

137/21-149/21=-4/7

Denominator 1.3 fn

49/6+1049/90=892/45

Denominator 2.2 fn

-21/5+1/13+90/13=14/5

1/5-(1/2-3/10)=0/1

1/2×(4/3÷8/9)=3/4

2/5×15/16=3/8

13/3×43/4=559/12

7/2÷11/6×155/21=155/11

Fragment 2.3 fp

860/87÷344/27×4454/45=2227/29

Fragment 3.1 fp

(3/4×16/3)÷7/5=20/7

Fragment 3.2 fp

(464/25÷116/5)×25/28=5/7

Reduction 1.3 fp

507/651=169/217

Limited 0.1 fp

23/3×(49/5-46/5)=23/5

Limited 1.2 fp

51/2÷85/6+443/40=103/8

Limited 2.1 fp

10/9÷(2/5+1/10)=20/9

Complete 0.1 fn

(-17/5-13/5)×1/6=-1/1

Complete 1.1 fn

61/8-15/4÷5/9=7/8

Complete 1.2 fn

1037/35+3/4×308/15=1576/35

Complete 2.1 fn

33/7÷(1/8+3/8)=66/7

Comparisons

Ceil 0.4 in

-244716 > -949111

Ceil 1.4 in

-815196 < 17890

Ceil 2.4 in

876219-121902 > -260768-593141

Ceil 3.4 in

46×(-99) = -396198÷87

Point 0.3 dp

0.625×26.52 < 1.216×70

Point 0.4 dp

241.937+48.063 < 320.282+452.885

Point 2.4 dp

405.597-304.966 < 41.823+222.594

Point 3.3 dp

72.84÷3.642 > 31.62÷9.3

Point 3.4 dp

1.75×39.424 < 92.16×1.575

-28.96 < 60.864

9.453 > -26.863

-931.524 < 220

-15.399-17.51 > 10-89.552

Doted 2.4 dn

-310.058-30.117 < 735.233-67.565

Doted 3.3 dn

-65.04÷(-1.355) > 15×(-3.201)

Improper 0.3 fp

13313/275-36909/770 < 8499/112-16791/224

Improper 3.3 fp

77/96÷1771/636 < 47/66×4482/47

Descent 0.1 fn

1/2-1/4 < -2/9+8/9

Descent 0.2 fn

67/72 > -3/5

Descent 1.3 fn

-86480/869 < 3796/209

Descent 2.2 fn

-2/7-13/28 < 493/52-69/52

Descent 3.1 fn

-1/2÷3/4 < 5/6×4/5

Descent 3.2 fn

-1/4÷(-24/35) = 1/4×35/24

Equations

2×(-x+375)=750

-1+x÷577=0

-(-x-855)×40=-880

y-x=0

Rounding

Rounding 0.3 dp

52.995≈53

Rounding 3.3 dp

0.709×40.284≈28.56

Language Exercises

Russian Vocabulary 1.5

наскво ь

Russian Vocabulary 3.4

м тежный

English Vocabulary 1.4

public y

English Vocabulary 2.4

appr ving

Lexicon 1.4

campai n [crusade]

Infinitive 2.2

underwrite [underwrite]

14+

Recommended for adolescents from the age of fourteen

Integer Examples

Intellect 0.3 in

-7268-368÷92+17272=10000

Intellect 1.3 in

110÷55-5911=-5909

Intellect 2.3 in

35584÷16+352÷2=2400

Intellect 3.3 in

6298+22÷(3400-3389)=6300

25×(-19)=-475

-336÷(-8)=42

952÷(-34)×95=-2660

1260÷(5×(-7))=-36

-221÷17×(6÷(-3))=26

Decimal Examples

54÷40=1.35

12.48÷(192÷100)=6.5

6.72×1.25=8.4

529.2÷282.24=1.875

42.24÷1.056=40

1.28×250×0.125=40

(810÷28.125)×0.25=7.2

Definition 0.3 dp

37.849-14.168÷5.5+54.931=90.204

Definition 0.4 dp

310×0.104+48.75×12.672=650

Definition 1.4 dp

38×14.4-122.13=425.07

Definition 2.4 dp

589.171+0.9÷36×490=601.421

Definition 3.3 dp

29.08-(28.195-25.995)÷27.5=29

Definition 3.4 dp

312.5÷(13.407+36.593)×80=500

Negatory 0.3 dn

-3.36÷(-5.646-4.854)÷0.05=6.4

Negatory 0.4 dn

-100.8÷0.896-466.011=-578.511

Negatory 1.4 dn

101.99+28.125×19.2=641.99

Negatory 2.4 dn

-133.7+19.2×2-414.7=-510

Negatory 3.3 dn

(10.6+5.4)÷(0.637+0.003)=25

Negatory 3.4 dn

597.818+(13.425+5.575)×4.232=678.226

Residual_ENG 1.3 dp

17÷40=0.425

Fraction Examples

Denominator 0.3 fn

2/3-89/3=-29/1

Denominator 2.3 fn

260/7+153/7-28589/479=-328/479

Denominator 3.3 fn

83/234+(-1/42-1/252)=17/52

Fragment 0.3 fp

1/7×56/79=8/79

Fragment 3.3 fp

17/24×(19/34×24/19)=1/2

Limited 0.2 fp

218/9÷(1/2+1/6)=109/3

Limited 1.3 fp

1/6÷7/12+46288/623=6638/89

Limited 2.2 fp

(1231/34-1069/34)÷27/4=12/17

Complete 0.2 fn

(702/19+324/19)÷111/67=1206/37

Complete 1.3 fn

-91/9-1/4×284/9=-18/1

Complete 2.2 fn

-(49/2-51/2)×5/53=5/53

Comparisons

Doted 0.4 dn

-263.871-336.129 < 196.831+403.169

Doted 3.4 dn

44.16×(-14.625) < 19×(-33.991)

Descent 0.3 fn

9/13 < 16142/247

Descent 2.3 fn

299/785+46/785 > -3339/157+3183/157

Descent 3.3 fn

-50/7×(-63/40) > -135/2÷405/314

Equations

-2x²-18x=0

10x²=0

-4x²-8x=0

-x²-3x+10=0

x+y=13

x-y=0

7y×x=280

7y-4x=23

2x×y=160

y+x=13

-20y÷5x=1

-10y+10x=0

Language Exercises

Russian Vocabulary 2.5

ген алогия

English Vocabulary 1.5

respons bility

English Vocabulary 2.5

unre sonable

English Vocabulary 3.4

themsel es

Lexicon 1.5

comm nicate [give]

Lexicon 2.4

mathem tics [maths]

Infinitive 1.3

spread spread [spread]

Infinitive 3.2

foresee [foresee]

15+

Recommended for adolescents from the age of fifteen

Integer Examples

Logics 0.4 in

-15232÷(-16)=952

Logics 1.4 in

243×426=103518

Logics 2.4 in

-4000÷80×(-644)=32200

Logics 3.4 in

-15×(-160×(-25))=-60000

Logics 4.4 in

-932400÷(-225÷(-15))÷(-210)=296

Fraction Examples

Limited 0.3 fp

336/125×(4099/119+151/119)=96/1

Limited 2.3 fp

10/473×(103/4+69/4)=10/11

Complete 0.3 fn

-87/4×2588/957+9/11=-58/1

Complete 2.3 fn

-20/21×(49/80+11/80)=-5/7

Equations

98x²-5194x=0

60x²=7260

35x²+2835x=0

x²+2x-288=0

x+y=150

x+y=645

2x×5y=100000

30x+30y=2490

2530x÷80y=115

y-x=-100

4y×x=20000

47x+20y=-1230

Language Exercises

Russian Vocabulary 3.5

эл ксир

English Vocabulary 3.5

contin ous

Lexicon 2.5

disappr val [censure]

Infinitive 2.3

hit [hit]

16+

Recommended for adolescents from the age of fifteen

Equations

-29x²+580x+609=0

40x²=2152960

-173x²-71622x=0

-x²+121x+1452=0

y-x=70

30y÷31x=3

48y-x=43360

-x-y=236

-x+y=592

-10x×4y=-3149280

-495y-243x=304515

Language Exercises

Infinitive 3.3

thrust [thrust]

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