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

4+6=10

Beginner 2.1 ip

7-6=1

Beginner 3.1 ip

1+2=3

Step-by-step Tasks

3+1=4

1+4=5

1+6=7

1+3=4

3+1=4

4-2=2

6-2=4

6-1=5

2-1=1

4-2=2

10-3=7

Recommended for children from six years

Integer Examples

7+10=17

4-2=2

2-1=1

10-1-2=7

Step-by-step Tasks

5+2=7

9+3=12

1+0=1

4+5=9

7-5=2

7+5=12

6+2=8

2+6=8

4+5=9

2+7=9

2+3=5

3+6=9

5+8=13

6+9=15

2-1=1

10+9=19

8+10=18

9-4=5

9-5=4

9-2=7

13-2=11

14-4=10

15-6=9

11-7=4

7-2=5

15-8=7

8-8=0

13-9=4

15-10=5

12-10=2

Recommended for children from seven years

Integer Examples

8-(1+6)=1

35+62=97

46-36=10

78+22=100

18-1-5=12

5+(4+1)=10

Step-by-step Tasks

10+3=13

1+9=10

11-7=4

22+4=26

3+10=13

14+4=18

5+10=15

18-15=3

5+25=30

19+6=25

7+9=16

14-9=5

5-1=4

17-2=15

23-13=10

17-4=13

16-15=1

26-16=10

19-7=12

8-8=0

1×6=6

1×2=2

2×7=14

5÷1=5

Comparisons

Natural 1.1 ip

8 > 4

Natural 2.1 ip

4+0 < 5-0

Language Exercises

Russian Vocabulary 1.1

к стрюля

Recommended for children from eight years

Integer Examples

4+11=15

87+434=521

803-143=660

256+16=272

80+19+1=100

20-(20-13)=13

10×7=70

96÷2=48

8×4=32

18+72=90

72-28=44

20+60=80

Step-by-step Tasks

24+6=30

1+2=3

8+3=11

19+12=31

50+30=80

10+25=35

7+0+10=17

19-18=1

23-13=10

16-9=7

6-5=1

39-9=30

100-70=30

3×9=27

2×0=0

6×4=24

9×3=27

10×5=50

3×3=9

2×10=20

2×6=12

4×3=12

3×7=21

1×6=6

4×10=40

8×6=48

5×0=0

9×1=9

6×6=36

5×4=20

10×8=80

2÷2=1

20÷2=10

21÷3=7

6÷3=2

0÷4=0

4÷2=2

5÷5=1

18÷2=9

10÷2=5

12÷6=2

10÷5=2

14÷7=2

54÷6=9

5÷1=5

0÷8=0

0÷3=0

36÷9=4

5÷5=1

90÷9=10

0÷10=0

Comparisons

5×2 > 9÷9

46 = 46

87-0 > 52-39

4×2 > 10÷2

Equations

Linear 1.1 ip

x+5=6

Linear 2.1 ip

2×x=10

Language Exercises

Russian Vocabulary 1.2

з бавы

Russian Vocabulary 2.1

лфавит

Russian Vocabulary 3.1

запа

English Vocabulary 1.1

j y

English Vocabulary 2.1

s ze

Lexicon 1.1

s ve [keep]

Lexicon 2.1

rm [hand]

Recommended for children from nine years

Integer Examples

100-35=65

400-284+884=1000

76-(4+40)=32

6÷2=3

7×4=28

504÷2=252

810÷3=270

8×5÷4=10

(6×15)÷10=9

24÷(4÷2)÷4=3

15÷3=5

1177+7228=8405

5356-4837=519

2908+7092=10000

70×9=630

72÷3=24

47+9÷3=50

8+92÷2÷2=31

54÷3=18

20÷7=2(6)

Step-by-step Tasks

2×23=46

11×8=88

3×11=33

15×3=45

12×4=48

17×5=85

12×3=36

20×5=100

3×20=60

6×20=120

14×7=98

7×15=105

8×15=120

2×33=66

20×9=180

24×5=120

10×16=160

10×14=140

19×8=152

8÷2=4

55÷11=5

54÷3=18

26÷2=13

60÷4=15

40÷5=8

24÷2=12

54÷3=18

0÷20=0

42÷6=7

119÷7=17

4÷4=1

88÷8=11

15÷5=3

45÷9=5

32÷8=4

480÷10=48

27÷3=9

77÷11=7

Comparisons

45÷9 < 60÷6

852 > 850

383+186 > 100+270

2×2 < 12÷2

Equations

Linear 1.2 ip

x-41=1

Linear 2.2 ip

20×x=80

Linear 3.1 ip

8-x×3=2

Language Exercises

Russian Vocabulary 1.3

вет ран

Russian Vocabulary 2.2

акк ратный

Russian Vocabulary 3.2

м лина

English Vocabulary 3.1

pla e

10+

Recommended for children from ten years

Integer Examples

465+505=970

82954+225573=308527

952724-492724=460000

379990+206282=586272

746-(401+40)=305

19×(8÷2)×8=608

4×68=272

6888÷3=2296

52×81=4212

18×9×2=324

(4×25)÷20=5

450÷5×(16÷4)=360

111÷11=10(1)

120000+793277=913277

400000-229487=170513

474848+261997=736845

7298×9=65682

5693×21=119553

938÷2=469

38-68÷4÷17=37

120×6-427=293

65-750÷6÷5=40

(13-7)×(21-15)=36

240÷3=80

217÷19=11(8)

Comparisons

Natural 0.3 ip

2×24 < 4×19

Natural 1.4 ip

611200 < 611247

Natural 2.4 ip

896896+1845 > 248368+47602

Natural 3.3 ip

840÷20 < 14×34

Equations

7×x=7

131+x=994

x÷2=402

78-x×3=15

(6-x)×4=8

Rounding

Round 1.1 ip

172≈17

Round 1.2 ip

9156≈92

Round 2.1 ip

723-44≈68

Language Exercises

Russian Vocabulary 2.3

с рень

English Vocabulary 1.2

eah

English Vocabulary 2.2

cl ud

Lexicon 1.2

th m [pronoun]

Lexicon 2.2

m in [chief]

Infinitive 1.1

freeze froze [freeze]

11+

Recommended for children from the age of eleven

Integer Examples

Beginner 0.5 ip

612415-407415=205000

Beginner 4.5 ip

160216+61763-190025=31954

Beginner 5.5 ip

994942-(472617+153626)=368699

Conversant 1.1 in

0-3=-3

Conversant 1.5 in

-74568-307000=-381568

0-4-4=-8

2×1250=2500

40×200÷80=100

(1458÷27)÷2=27

6912÷3÷(8×8)=36

76÷38=2

24540×109=2674860

7964÷44=181

370-384÷128=367

5200-13×68+2634=6950

3624-20×120=1224

3110×30+5400÷27=93500

Numeracy 3.2 ip

178+(10+14)÷2=190

Numeracy 3.3 ip

3513-135÷(57+78)=3512

Divisor_ENG 1.3 ip

7991÷61=131

Remainder_ENG 1.3 ip

472÷93=5(7)

Decimal Examples

8.2-0.3-1=6.9

38.6-18.2=20.4

8.3-6.3=2

12.1+34.9=47

5.1+6.2-7.3=4

15.2+50+4=69.2

6.4-(6.6-2)=1.8

20.5-(26.9-7.1)=0.7

3.7÷0.5=7.4

2×3.3=6.6

96÷1.5=64

3.6×4=14.4

Divisional_ENG 1.1 dp

15.4÷7=2.2

Fraction Examples

Numerator 1.1 fp

2/3-2/3=0/1

Comparisons

Natural 0.4 ip

527041+91192 > 987931-586331

2×8 < 8800×32

-2×2 < -4÷(-4)

3 > -8

-4+10 > 2-8

-2×3 > 4×(-2)

32.8 < 58

20.8+2.3 < 1.1+29.9

1/5 < 3/4

27/4 > 2/3

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

Equations

60+x×9=96

132×(x-606)=660

670÷x-1=66

2×(x+16)=52

648÷(x+6)=108

-2+x=8

x÷3=3

Rounding

28.9≈29

54.7+21.7≈76

675÷9≈8

3500+2064≈56

147857≈148

608331≈608

7376-3006≈44

999997-486≈1000

410÷5≈8

3835÷5≈8

378160÷580≈1

Language Exercises

Russian Vocabulary 1.4

ор гинальный

Russian Vocabulary 3.3

нварский

English Vocabulary 1.3

loo ely

English Vocabulary 2.3

st ff

English Vocabulary 3.2

d rty

Lexicon 1.3

tr ding [commerce]

Infinitive 2.1

broadcast [broadcast]

12+

Recommended for children from the age of twelve

Integer Examples

1-(-1-3)=5

6-3=3

-50+23=-27

-12+12=0

58-68=-10

-20+9+1=-10

16-87+11=-60

-3+(-4-1)=-8

-8-(1+4)=-13

-34+(90-37)=19

(9-3)-(8+5)=-7

-(16-18)+(13-13)=2

-(7+20)-(2-68)=39

470600÷50=9412

741×1000=741000

748000÷1000=748

321×940=301740

25×16×1000=400000

(450÷75)×382=2292

42×2176÷(672÷42)=5712

9641×4153=40039073

4725÷25=189

-12÷2-75÷3=-31

11×6+4=70

34÷17-60÷6=-8

(100-10)÷(13-4)=10

-16÷(-4)=4

-50÷5=-10

45÷(-5)×9=-81

(-80÷(-2))÷(-4)=-10

-10×(-9)÷(-30÷(-3))=9

Divisor_ENG 1.4 ip

31739÷17=1867

Decimal Examples

77.35+1.66+5=84.01

62.72-32.71=30.01

67.12+70.42-50=87.54

38.26-(94.55-82.63)=26.34

4.5-2-6.4=-3.9

-12-(1.3+16.1)=-29.4

-1.2-5.1=-6.3

16.7+5=21.7

-1.9+0.6+6.3=5

-30.6-32+9.6=-53

1.1+(-6.2+2.9)=-2.2

11.3-(-78.9-0.8)=91

60÷8=7.5

10.08÷0.35=28.8

(46.3÷92.6)×6.8=3.4

0.6×30=18

1.4÷4=0.35

0.5×0.52=0.26

13×1.5×1.2=23.4

0.6×(0.5×5)=1.5

64.1+3×2.4=71.3

3.5×1.6+27.1=32.7

51.7+4×0.2×2.5=53.7

0.8×(23.9-21.4)×10=20

Negatory 1.1 dn

-5.6×12.5+17.7=-52.3

Negatory 2.1 dn

22+32÷2.5×5=86

Residual_ENG 1.1 dp

40÷2=20

Divisional_ENG 1.2 dp

1.28÷4=0.32

Fraction Examples

Numerator 0.1 fp

1/10+1/5+7/10=1/1

Numerator 0.2 fp

183/19-(2/3+25/3)=12/19

Numerator 1.2 fp

3/10+841/90=434/45

Numerator 2.1 fp

1/2+1/2-3/8=5/8

Numerator 2.2 fp

99/19-23/19-17/19=59/19

Numerator 3.1 fp

9/10-(7/10+1/10)=1/10

Numerator 3.2 fp

23/11+(87/11-238/33)=92/33

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

-7/10+1/5=-1/2

1/4+1/4+1/8=5/8

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

6/5×10/3=4/1

125/13÷5/26=50/1

3/5×10/9÷6/5=5/9

270/35=54/7

126/18=7/1

1/3-1/2×1/6=1/4

Comparisons

77 < 82

881 > 763

85 > -81

268 > -563

11+18 < 70-0

-609+849 > -304+461

-12×(-3) > 68÷(-2)

-84×(-9) > 150×3

22.8÷6 = 0.5×7.6

6.25×0.64 = 32.28÷8.07

23 > 21.12

78.106 > 10.016

811.262 > 811.242

26.53+26.28 > 1.85+50.07

Point 2.3 dp

40-16.233 > 9.441+2.859

Point 3.1 dp

13×3.4 > 27.2×0.5

Point 3.2 dp

0.96×6.5 > 81.99÷27.33

Doted 0.1 dn

-26.8-14.6 = 20.1-61.5

-60÷(-2) > 1.2×2

-100 < -92.7

6.97 > -10

59+13.2 > -56+77

26.39+57.35 > 2.22+1.44

Doted 3.1 dn

86.1÷(-7) < 2×(-2.6)

Doted 3.2 dn

-31.8÷1.06 = -36.3÷1.21

Improper 0.1 fp

1/2×2/7 < 1/2÷5/8

Improper 0.2 fp

2/3+1/2 > 26/11-127/77

Improper 1.3 fp

59420/633 < 664/7

Improper 2.2 fp

1/2+1/20 < 1/3+1/3

Improper 2.3 fp

461/66+322/55 > 1/6+109/204

Improper 3.1 fp

1/5÷1/3 = 9/10×2/3

Improper 3.2 fp

13/3÷49/12 < 1/2÷1/19

Descent 1.1 fn

-2/7 < 2/7

Descent 1.2 fn

12/13 > 1/2

Descent 2.1 fn

2/3+1/3 > -2/9-1/9

Equations

-(-3+x)×3=6

-15×(-x)=60

-97+x=-37

-92-x=59

2×x=-94

-x÷26=-15

-x÷10-9=-8

-93-x×2=67

-4÷(-10-x)=2

10×(-x-84)=-40

Rounding

10.4×3≈31

65.17≈65.2

61.65≈61.7

77.461≈77.46

71.21+27.19≈98.4

43.163+9.338≈52.5

10.1×6≈61

1.61×48.93≈78.8

Language Exercises

Russian Vocabulary 2.4

н жданный

English Vocabulary 3.3

m rry

Lexicon 2.3

restri t [bound]

Infinitive 1.2

mistake mistaken [mistake]

Infinitive 3.1

dream [dream]

13+

Recommended for adolescents from the age of thirteen

Integer Examples

Conversant 0.4 in

346+424=770

Conversant 0.5 in

-270000-29000-1000=-300000

Conversant 1.4 in

151-465=-314

Conversant 2.4 in

-150-180-404=-734

Conversant 2.5 in

-766312+774055-939583=-931840

Conversant 3.4 in

-229-(346+83)=-658

Conversant 3.5 in

181625-(-153365-643000)=977990

Conversant 4.4 in

(123+20)-(780-647)=10

Conversant 4.5 in

(218460+0)+(862505-807963)=273002

5932716÷157=37788

397+32÷2=413

655-4×403=-957

-140+5×8×23=780

(280+104)÷(20+4)=16

-800÷(-5)÷4=40

2×30=60

-288÷(-2)÷(-4)=-36

(-1000÷(-2))÷2=250

10×10÷(-2×(-5))=10

3352043÷391=8573

Decimal Examples

Partitive 0.4 dp

93.016+363.889-433.397=23.508

Partitive 1.4 dp

537.923-16.72=521.203

Partitive 2.4 dp

100+282.387-273.755=108.632

Partitive 3.4 dp

465.971-(38.118+306.665)=121.188

Split 0.3 dn

27-88=-61

Split 0.4 dn

-68.569-484.139-4.175=-556.883

Split 1.3 dn

-98.05+2.26=-95.79

Split 1.4 dn

-450-152.449=-602.449

Split 2.3 dn

-11.75-31.43+97.77=54.59

Split 2.4 dn

-321.327+225.967-444.551=-539.911

Split 3.3 dn

73.31-(-15.54-1.61)=90.46

Split 3.4 dn

77.155+(215-122.155)=170

76÷8=9.5

0.168÷0.014=12

1.32÷44÷0.6=0.05

18.81÷13.75=1.368

0.8×54.675=43.74

24.48÷3.2=7.65

78.125×0.512=40

67.2÷10÷0.5=13.44

3.125×12.8×0.88=35.2

(9÷37.5)÷2=0.12

(28.586÷14.293)×0.007=0.014

Definition 0.2 dp

(2.3+1.2)×(7.35+14.25)=75.6

20.09+21.6÷4.8=24.59

73.2-7.344÷2.295=70

24.4+8×8.75×1.08=100

87.502-37.62÷60-38.186=48.689

Definition 3.2 dp

30.47+(49.01-42.51)×0.06=30.86

25.8÷1.2-18=3.5

56.77+3×10.4=87.97

-10.5×2-21.74=-42.74

-55+20.16÷14.4=-53.6

8.07-12×6.25-3.69=-70.62

Negatory 2.3 dn

-25.28+6.4×0.005+55.931=30.683

Negatory 3.1 dn

0.5×(-0.5-0.3)×50=-20

Negatory 3.2 dn

1.32÷(29.16-33.16)×14=-4.62

Residual_ENG 1.2 dp

84÷6=14

Divisional_ENG 1.3 dp

3.96÷5=0.792

Fraction Examples

Numerator 0.3 fp

377/20+353/180=1873/90

Numerator 1.3 fp

74/7-29/63=91/9

Numerator 2.3 fp

5211/271-5106/271+8025/271=30/1

Numerator 3.3 fp

14629/194-(9/97+79/97)=149/2

Denominator 0.2 fn

1/6-13/6=-2/1

Denominator 1.2 fn

1/2+7/10=6/5

Denominator 1.3 fn

-2551/498+134/3=19693/498

Denominator 2.2 fn

-5/31+49/31-68/31=-24/31

Denominator 3.2 fn

-6/13-(-14/39-4/39)=0/1

3/4×2/3×2/3=1/3

1/19×19/3÷1/2=2/3

1/3×3/5=1/5

3/2×1/3÷3/20=10/3

860/87÷344/27×4454/45=2227/29

Fragment 3.1 fp

(20/3÷10/7)×3/2=7/1

Fragment 3.2 fp

(464/25÷116/5)×25/28=5/7

Reduction 1.3 fp

2460/2697=820/899

Limited 0.1 fp

10/3-26/3÷13/4=2/3

Limited 1.2 fp

2/3÷8/39+463/84=184/21

Limited 2.1 fp

(17/10-9/10)÷8/3=3/10

Complete 0.1 fn

2/3÷1/6-3/2=5/2

Complete 1.1 fn

9/4×8/7-4/7=2/1

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

438900 > 300000

Ceil 1.4 in

-775923 > -933776

Ceil 2.4 in

23000+129472 < 60931+800177

Ceil 3.4 in

-161×2 < 12×2

Point 0.3 dp

61.622-31.622 > 3.919+4.048

Point 0.4 dp

504.6÷10.092 > 529.414÷11.509

Point 2.4 dp

990.111-5.414 > 991.834-127.012

Point 3.3 dp

2.304×37.5 > 10.236÷1.706

16×8.4 > 94.73÷2.5

-79.489 < -22.89

-47.644 < -35.648

358.696 < 358.713

-27.286+98.194 > -2-0.119

Doted 2.4 dn

-438.891-258.86 < 405.505+292.242

Doted 3.3 dn

28.836÷(-7.2) < 1.25×(-1.584)

Improper 0.3 fp

251/4-23/4 > 552/11+31/11

Improper 3.3 fp

129/2×2/129 < 190/3×56/95

Descent 0.1 fn

-1/6÷(-3/4) > 1/3÷(-2/5)

Descent 0.2 fn

-3/4×8/9 < -5/1×1/15

Descent 1.3 fn

21517/250 > -6359/75

Descent 2.2 fn

-7/86-9/86 < 1/5+2/15

Descent 3.1 fn

-1/2÷(-7/10) > 1/2×2/3

Descent 3.2 fn

-1/4×4/27 > 15/52×(-91/27)

Equations

32×(-x)=960

-1+x÷577=0

-60×(865-x)=540

x+y=8

Rounding

Rounding 0.3 dp

2.193×30.124≈66.06

Rounding 3.3 dp

92×0.5≈46

Language Exercises

Russian Vocabulary 1.5

ц ллюлоза

Russian Vocabulary 3.4

нев данный

English Vocabulary 1.4

thorou hly

English Vocabulary 2.4

midni ht

Lexicon 1.4

ever body [all]

Infinitive 2.2

input [input]

14+

Recommended for adolescents from the age of fourteen

Integer Examples

Intellect 0.3 in

-932-896÷16-108=-1096

Intellect 1.3 in

3121-168÷8=3100

Intellect 2.3 in

3984-3780÷270+3513=7483

7258-35÷(30+5)=7257

-15×(-60)÷50=18

-100×(-100)=10000

5×20÷(-10)=-10

2394÷(-3×(-2))=399

7424÷(4×4)÷16=29

Decimal Examples

48÷2=24

718.08÷5.984=120

48.4×0.225=10.89

9.072÷0.648=14

1.5×480=720

0.76÷6.08÷125=0.001

137.214÷(107.1÷85)=108.9

Definition 0.3 dp

(69.775-68.345)×(5.364+6.536)=17.017

Definition 0.4 dp

322.56×1.9-457.938=154.926

Definition 1.4 dp

36.8×27-29.733=963.867

Definition 2.4 dp

93.75×6.656+319.2÷4.2=700

Definition 3.3 dp

(38.552-37.202)×(10+21.2)=42.12

Definition 3.4 dp

8.224-(299.981-299.801)×7.6=6.856

Negatory 0.3 dn

74+29.568÷1.2=98.64

Negatory 0.4 dn

11.088÷(0.5-0.7)÷0.8=-69.3

Negatory 1.4 dn

673.92÷6.5+124.249=227.929

Negatory 2.4 dn

-27.36÷684-2.7÷37.5=-0.112

Negatory 3.3 dn

(12.544-13.888)×(-14.361-32.514)=63

Negatory 3.4 dn

704.398-547.2÷(1.197+1.803)=521.998

Residual_ENG 1.3 dp

27÷12=2.25

Fraction Examples

Denominator 0.3 fn

101/273+26605/819+6452/117=88/1

Denominator 2.3 fn

2127/209+16455/209-12895/451=2473/41

Denominator 3.3 fn

-4/15+(3377/62-1/90)=15119/279

Fragment 0.3 fp

1/7×56/79=8/79

Fragment 3.3 fp

(1624/57÷1218/19)÷4/81=9/1

Limited 0.2 fp

777/40×(87/7-82/7)=111/8

Limited 1.3 fp

54145/724-3/4×2701/543=12861/181

Limited 2.2 fp

(88/3-1/3)×14/29=14/1

Complete 0.2 fn

1/6+1/2÷3/4=5/6

Complete 1.3 fn

22/119×56/11+273/17=17/1

Complete 2.2 fn

(2/3-8/3)×1/4=-1/2

Comparisons

Doted 0.4 dn

-315.402 < 998.655

Doted 3.4 dn

589.842÷32.769 = -916.344÷(-50.908)

Descent 0.3 fn

-45457/472 < -807/10

Descent 2.3 fn

4577/219+5983/219 > 1333/33-412/33

Descent 3.3 fn

28/225÷(-56/423) < 79/1÷7900/131

Equations

x²+11x+18=0

10x²=0

-6x²-48x=0

-x²+6x+16=0

x+y=13

x-y=65

3y×4x=432

10x+4y=140

-3y×12x=-324

y-x=9

40x÷8y=-25

7x-10y=140

Language Exercises

Russian Vocabulary 2.5

ижд венчество

English Vocabulary 1.5

del berately

English Vocabulary 2.5

signifi antly

English Vocabulary 3.4

ill gal

bl me [condemn]

fort eth [count]

wind wound [wind]

slept [sleep]

15+

Recommended for adolescents from the age of fifteen

Integer Examples

Logics 0.4 in

-187×30×(-147)=824670

Logics 1.4 in

44000÷4=11000

Logics 2.4 in

-586224÷(-27)÷(-23)=-944

Logics 3.4 in

(-400×10)÷50=-80

Logics 4.4 in

-36600÷183÷(21720÷2172)=-20

Fraction Examples

Limited 0.3 fp

62/221×65/496+13/24=59/102

Limited 2.3 fp

(367/760+93/760)×15599/598=821/52

Complete 0.3 fn

(1/2-9/2)×79/854=-158/427

Complete 2.3 fn

1273/324×(-3/19-1/19)=-67/81

Equations

-75x²-7500x=0

70x²=85750

-10x²+10x=0

-x²+120x-1100=0

x+y=150

y+x=932

36x÷9y=3

30y-20x=750

-11y×3x=29700

-y+x=-10

3402x÷21y=-729

-4y-69x=-2780

Language Exercises

Russian Vocabulary 3.5

ж рдочка

English Vocabulary 3.5

expect tion

Lexicon 2.5

ind pendence [liberty]

Infinitive 2.3

cost [cost]

16+

Recommended for adolescents from the age of fifteen

Equations

x²+17x-390=0

14x²=201600

963x²-315864x=0

-2x²-6x+680=0

4y×x=130680

10y×3x=614400

103x-y=75500

-y+x=530

y+x=-91

-2y×10x=-2160000

-178x-76y=150522

Language Exercises

Infinitive 3.3

sling [sling]

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