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

5+1=6

Beginner 2.1 ip

7-6=1

Beginner 3.1 ip

4+3=7

Step-by-step Tasks

3+1=4

2+3=5

1+2=3

3+0=3

1+9=10

2-1=1

3-1=2

7-4=3

4-1=3

2-2=0

6-3=3

Recommended for children from six years

Integer Examples

9+7=16

17-13=4

20-8=12

8-4-2=2

Step-by-step Tasks

8+2=10

6+3=9

5+3=8

4+5=9

4+6=10

4+5=9

6+2=8

6+7=13

3+9=12

7+1=8

9+1=10

4+2=6

5+8=13

9+7=16

6-0=6

10+7=17

7+10=17

7-4=3

7-5=2

10-2=8

13-3=10

15-4=11

16-6=10

14-7=7

16-1=15

14-8=6

11-8=3

10-9=1

5-0=5

10-10=0

Recommended for children from seven years

Integer Examples

6-5=1

30+57=87

75-21=54

100-57=43

20-4-11=5

10-(7+2)=1

Step-by-step Tasks

10+8=18

5+5=10

10-10=0

22+4=26

22+3=25

4+7=11

20+10=30

12+17=29

5+25=30

6+12=18

5+27=32

17-6=11

14-11=3

18-12=6

10-3=7

24-4=20

16-15=1

17-6=11

27-17=10

17-17=0

1×1=1

2×4=8

2×7=14

5÷1=5

Comparisons

Natural 1.1 ip

9 > 2

Natural 2.1 ip

9-7 < 2+4

Language Exercises

Russian Vocabulary 1.1

М сква

Recommended for children from eight years

Integer Examples

9-(17-9)=1

199+19=218

810-176=634

123+260=383

38+62-13=87

16-(1+5)=10

3×0=0

0÷4=0

20÷5=4

45+13=58

70-34=36

12+69=81

Step-by-step Tasks

26+14=40

27-22=5

22+8=30

19+12=31

50+30=80

16+24=40

19-19+0=0

19-18=1

23-13=10

12-9=3

6-5=1

39-29=10

20-10=10

3×5=15

1×2=2

4×9=36

2×0=0

5×10=50

10×5=50

5×10=50

1×6=6

9×6=54

7×7=49

5×8=40

5×2=10

0×8=0

6×2=12

9×1=9

6×3=18

5×2=10

10×8=80

12÷2=6

12÷2=6

18÷3=6

18÷2=9

12÷4=3

6÷1=6

0÷5=0

0÷4=0

10÷2=5

30÷6=5

10÷5=2

56÷7=8

70÷7=10

70÷7=10

80÷8=10

0÷3=0

63÷9=7

72÷8=9

40÷2=20

60÷10=6

Comparisons

2 < 4

40 < 76

80-0 > 2+54

3÷3 < 8÷4

Equations

Linear 1.1 ip

x-2=7

Linear 2.1 ip

10×x=10

Language Exercises

Russian Vocabulary 1.2

ул ца

Russian Vocabulary 2.1

чу ть

Russian Vocabulary 3.1

к торый

English Vocabulary 1.1

m il

English Vocabulary 2.1

m ve

Lexicon 1.1

m od [humor]

Lexicon 2.1

ar a [sphere]

Recommended for children from nine years

Integer Examples

100-35=65

781-388-341=52

86-(84-28)=30

35×2=70

2×20=40

511÷7=73

3×150=450

48÷8×6=36

3×(4×2)=24

7×(2×3)×2=84

15÷3=5

4320+5659=9979

3693-2393=1300

6218-3367=2851

70×9=630

60÷5=12

46×3-90=48

28+16×4÷2=60

45÷9=5

41÷7=5(6)

Step-by-step Tasks

2×21=42

11×8=88

19×3=57

2×15=30

19×4=76

5×11=55

4×3=12

20×5=100

5×16=80

11×6=66

7×14=98

1×15=15

8×15=120

39×2=78

11×9=99

24×5=120

10×16=160

20×19=380

7×8=56

8÷2=4

88÷11=8

54÷3=18

2÷2=1

80÷4=20

70÷5=14

48÷8=6

64÷4=16

100÷10=10

12÷6=2

49÷7=7

56÷7=8

104÷8=13

15÷5=3

108÷9=12

98÷7=14

420÷20=21

27÷3=9

40÷5=8

Comparisons

3×3 < 72÷3

80 < 864

272+136 < 645+205

60÷5 < 100÷2

Equations

Linear 1.2 ip

1+x=1

Linear 2.2 ip

x÷2=30

Linear 3.1 ip

2+x×7=9

Language Exercises

Russian Vocabulary 1.3

през дент

Russian Vocabulary 2.2

мяк ть

Russian Vocabulary 3.2

м лина

English Vocabulary 3.1

wan

10+

Recommended for children from ten years

Integer Examples

570-23+355=902

189095+156767=345862

965550-473876=491674

168275+157510=325785

958-(34+243)=681

892÷4=223

64×125=8000

8800÷88=100

33×21=693

400÷4÷2=50

(360÷40)×16=144

288÷(18÷3)÷6=8

100÷17=5(15)

120000+352877=472877

503251-320000=183251

497867-443120=54747

7925×4=31700

3350×60=201000

160÷8=20

48×2-44÷4=85

880÷8+426=536

274-46×2÷23=270

51+24÷(2+22)=52

696÷2=348

28÷4=7

Comparisons

Natural 0.3 ip

740-15 > 869-389

Natural 1.4 ip

870157 > 40000

Natural 2.4 ip

895326+79974 > 602031-124272

Natural 3.3 ip

5×4 < 460÷2

Equations

x÷3=3

917-x=137

x÷91=7

9+2×x=93

2×(1+x)=10

Rounding

Round 1.1 ip

256≈26

Round 1.2 ip

6281≈63

Round 2.1 ip

830-19≈81

Language Exercises

Russian Vocabulary 2.3

нос рог

English Vocabulary 1.2

range

English Vocabulary 2.2

cl ud

Lexicon 1.2

w b [network]

Lexicon 2.2

l kely [probably]

Infinitive 1.1

outleap outleapt [outleap]

11+

Recommended for children from the age of eleven

Integer Examples

Beginner 0.5 ip

909180+83420=992600

Beginner 4.5 ip

170000+63167+23111=256278

Beginner 5.5 ip

994942-(472617+153626)=368699

Conversant 1.1 in

-2-6=-8

Conversant 1.5 in

-402102-388930=-791032

-6+10-1=3

(72÷18)×14=56

4680÷78×24=1440

(1458÷27)÷2=27

126÷(9÷3)×37=1554

680÷90=7(50)

85000×103=8755000

7479÷27=277

277×5-716=669

1100×63-312÷78=69296

1633+1530÷85=1651

3528+81×32×16=45000

84+(576-76)÷4=209

676-69÷(3212-3143)=675

Divisor_ENG 1.3 ip

975÷13=75

Remainder_ENG 1.3 ip

236÷22=10(16)

Decimal Examples

2.4-1.4=1

51.9+(12+34.5)=98.4

9.6-2.5=7.1

23.4+21.6=45

9.6-1-3.2=5.4

39.9+29+5.1=74

9.3-(8+0.9)=0.4

85-(30.1+7.8)=47.1

85.8÷1.3=66

8.4×4.5=37.8

39.6÷0.8=49.5

38.4÷4=9.6

Divisional_ENG 1.1 dp

1.8÷3=0.6

Fraction Examples

Numerator 1.1 fp

9/10-3/10=3/5

Comparisons

12×200 < 330981÷7

2691×86 > 2×1274

6 > -1

7 > -1

-4+10 > 2-8

-4×2 < -3×2

11.6 < 65.2

18.6+45 > 14.9+42.9

1/9 < 4/5

20/37 < 661/74

7/10-1/10 > 5/6-1/3

Equations

x÷6=8

93×x=651

180-720÷x=0

(55-x)×14=70

120×(x-864)=720

x-5=0

3×x=3

Rounding

79.2≈79

15.3+24.9≈40

15×41≈62

4126≈41

959576÷472≈2

608331≈608

215+852≈11

583433-140905≈443

988÷13≈8

1123×3≈34

933100÷100≈9

Language Exercises

Russian Vocabulary 1.4

ор ентация

Russian Vocabulary 3.3

ув жать

English Vocabulary 1.3

st te

English Vocabulary 2.3

nless

English Vocabulary 3.2

d rty

Lexicon 1.3

tr ding [commerce]

Infinitive 2.1

partake [partake]

12+

Recommended for children from the age of twelve

Integer Examples

-6+0=-6

-(1-0)-(1-7)=5

-51+41=-10

-12+12=0

-70+3=-67

-3+10+3=10

16-87+11=-60

0+(9-10)=-1

-8-(1+4)=-13

33+(-37+1)=-3

(0+6)-(10+0)=-4

(14+12)+(14-20)=20

(21-93)+(18+76)=22

742×677=502334

738×345=254610

214200÷357=600

889320÷2=444660

74256÷272×717=195741

216÷(18×2)=6

109×(336÷8)÷14=327

5268×7432=39151776

60667÷19=3193

72+36×2÷4=90

-32-2×19=-70

-4×2+2×49=90

65+21÷(26-5)=66

22÷(-2)×9=-99

12÷2=6

45÷(-5)×9=-81

(-5×(-12))÷(-10)=-6

20÷(-2×(-2))×(-8)=-40

Divisor_ENG 1.4 ip

82521÷53=1557

Decimal Examples

Partitive 0.3 dp

77.35+1.66+5=84.01

Partitive 1.3 dp

8.6+48.12=56.72

Partitive 2.3 dp

12.65+34.4+40.93=87.98

Partitive 3.3 dp

84.01-(77.52-25.51)=32

-2-(-7-3.4)=8.4

-18+5.6+82.2=69.8

-8.9-1.1=-10

-70.3+69.8=-0.5

-1.5-1.5-7=-10

33.7+11-68.6=-23.9

7.3-(9-6)=4.3

-40.3-(8.8+4)=-53.1

34÷10=3.4

39.78÷2.25=17.68

0.5×5.2÷2=1.3

2×1.71=3.42

28.44÷0.79=36

6.84÷7.2=0.95

1÷2.5×52=20.8

(0.6×4)÷4.8=0.5

63.8-1.6×2.5÷5=63

96÷3.2-9.3=20.7

68.7-1.2÷2.4×96=20.7

50.2+(91-89.5)÷3=50.7

Negatory 1.1 dn

-99+1.9×24=-53.4

Negatory 2.1 dn

22+32÷2.5×5=86

Residual_ENG 1.1 dp

46÷10=4.6

Divisional_ENG 1.2 dp

62.4÷13=4.8

Fraction Examples

Numerator 0.1 fp

2/5-1/5=1/5

Numerator 0.2 fp

8/13+5/13+17/22=39/22

Numerator 1.2 fp

157/18-83/14=176/63

Numerator 2.1 fp

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

Numerator 2.2 fp

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

Numerator 3.1 fp

1/4+(1/8+5/8)=1/1

Numerator 3.2 fp

149/24-(73/11-7/11)=5/24

-1/3+3/4+1/4=2/3

-4/5+7/10=-1/10

-1/10-1/10-1/5=-2/5

4/9-(2/9-4/9)=2/3

6/5×10/3=4/1

92/7÷460/21=3/5

3/5÷1/2÷3/2=4/5

132/30=22/5

480/16=30/1

13/2-1/3÷2/9=5/1

Comparisons

1+0 > 2-63

575+97 > -819+132

42 > -21

-410 < 1000

91-2 > -9-5

-726+210 < 848-597

-11×8 < 96÷(-2)

-36×(-4) = 720÷5

0.5×8 = 27.2÷6.8

34.13+15.87 < 19.71+53.11

50 > 42.67

70.202 > 40

316.199 < 316.219

1.2+85.77 > 93.05-6.1

Point 2.3 dp

87.041-0.599 > 0.046+0.028

67.6÷4 < 73.1÷4.3

29.9÷10 < 18.9÷1.26

-30.5 > -54.6

-66.38+4.06 < 48.74-8.78

-8.8 < 8.9

44 > -43.4

35.1-5 < 15.9+46.8

35.88-2.98 < 74.36+12.64

Doted 3.1 dn

86.1÷(-7) < 2×(-2.6)

Doted 3.2 dn

66.3÷(-1.95) > 19.44×(-1.75)

Improper 0.1 fp

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

Improper 0.2 fp

43/11-21/11 < 5/4+7/4

Improper 1.3 fp

14/1 < 85/1

Improper 2.2 fp

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

Improper 2.3 fp

139/2-439/766 > 477/8-19/8

Improper 3.1 fp

1/2×1/3 < 1/2×4/9

Improper 3.2 fp

1/6×120/59 < 1/2×20/11

Descent 1.1 fn

-2/7 < 2/7

Descent 1.2 fn

12/13 > 1/2

Descent 2.1 fn

-1/5-3/10 < 2/3-1/3

Equations

(x-4)×3=0

x×2+68=-10

-x-52=-30

-x-561=409

-2×(-x)=62

600÷x=-40

1+5÷x=0

x÷33-2=-4

(-x+6)×3=-3

6×(41-x)=-54

Rounding

3.3≈3

19.91÷5≈4

83.78≈83.8

24.995≈25

54.99-15.71≈39.3

13.293+4.325≈17.62

83÷9.1≈9

33.01×2.35≈77.6

Language Exercises

Russian Vocabulary 2.4

мит нг

English Vocabulary 3.3

un form

Lexicon 2.3

al rming [anxious]

Infinitive 1.2

unwind unwound [unwind]

Infinitive 3.1

dream [dream]

13+

Recommended for adolescents from the age of thirteen

Integer Examples

Conversant 0.4 in

-434-728+612=-550

Conversant 0.5 in

-340000+470000-406000=-276000

Conversant 1.4 in

-493+602=109

Conversant 2.4 in

-150-180-404=-734

Conversant 2.5 in

548078-39883+61370=569565

Conversant 3.4 in

-229-(346+83)=-658

Conversant 3.5 in

-82240+(96655-819676)=-805261

Conversant 4.4 in

-(288+616)-(151-335)=-720

Conversant 4.5 in

-(13176+36770)-(381752+462858)=-894556

9268914÷402=23057

-133-4×9×23=-961

655-4×403=-957

-319+377×3-572=240

153-(510-474)÷4=144

-800÷(-5)÷4=40

2×30=60

-36×(-2)×9=648

(-770÷2)÷5=-77

-720÷(-36÷3)÷15=4

6509772÷633=10284

Decimal Examples

Partitive 0.4 dp

0+(592.791-78.683)=514.108

Partitive 1.4 dp

279.471+130.2=409.671

Partitive 2.4 dp

246.005+454.479+249.2=949.684

Partitive 3.4 dp

237.038+(265.417+175.545)=678

12+46=58

-71-489.921=-560.921

15.99-2.66=13.33

-253.728-247.706=-501.434

Split 2.3 dn

-25.75-4-7.92=-37.67

Split 2.4 dn

-600+543.786+24.469=-31.745

Split 3.3 dn

20+(79.73-97.84)=1.89

Split 3.4 dn

-160-(170.28+536.543)=-866.823

50÷20=2.5

10.368÷32=0.324

1.32÷44÷0.6=0.05

4.86÷5.625=0.864

0.8×54.675=43.74

24.48÷3.2=7.65

18×0.8=14.4

4÷0.4×1.6=16

3.9÷2.6×65=97.5

(10.25÷51.25)×0.2=0.04

Denary 5.3 dp

23.166÷(42.9×1.08)=0.5

Definition 0.2 dp

88.81-2.2÷27.5-66.4=22.33

Definition 1.2 dp

30×1.12-13.33=20.27

Definition 1.3 dp

1.2×0.005+84.66=84.666

Definition 2.2 dp

39+3.6÷0.75+52.2=96

Definition 2.3 dp

3.344÷0.836-8×0.032=3.744

Definition 3.2 dp

96.55-(15.73-14.45)×16.25=75.75

Negatory 0.1 dn

(12.8+24)÷(-42.2-31.4)=-0.5

Negatory 0.2 dn

25.6÷64-69.71=-69.31

Negatory 1.2 dn

30.4-8.16÷0.4=10

Negatory 1.3 dn

-49.775-8.448×5.5=-96.239

Negatory 2.2 dn

84.33+1.2÷20+15.61=100

Negatory 2.3 dn

81.099+90.72÷2.835-87.099=26

Negatory 3.1 dn

(1.7+85)÷(-0.5-25)=-3.4

Negatory 3.2 dn

88.57+62.4÷(45.46-50.66)=76.57

Residual_ENG 1.2 dp

54÷50=1.08

Divisional_ENG 1.3 dp

1.32÷33=0.04

Fraction Examples

Numerator 0.3 fp

3903/187+6179/748+2840/153=1717/36

Numerator 1.3 fp

3782/351+9647/351=1033/27

Numerator 2.3 fp

5584/143-3361/143+6869/616=1495/56

Numerator 3.3 fp

24867/446-(367/669+110/669)=24549/446

Denominator 0.2 fn

-60/13-31/13-2/5=-37/5

Denominator 1.2 fn

29/5-28/5=1/5

Denominator 1.3 fn

-4959/115-642/23=-8169/115

Denominator 2.2 fn

40/37-79/13-51/13=-330/37

Denominator 3.2 fn

4/5+(23/50+437/50)=10/1

1/2÷1/9÷5/4=18/5

(21/2×9/7)÷135/4=2/5

61/2÷244/77=77/8

33/2×9/11÷9/4=6/1

3627/85÷1116/25÷13/4=5/17

Fragment 3.1 fp

1/2×(9/2÷27/4)=1/3

Fragment 3.2 fp

69/40×(2/3÷5/4)=23/25

Reduction 1.3 fp

2024/46=44/1

Limited 0.1 fp

5/9÷20/3+1/6=1/4

Limited 1.2 fp

11/13×195/44+235/46=815/92

(1/3+1/3)×1/2=1/3

-1/9+14/3×15/7=89/9

15/2÷60/7+61/8=17/2

-569/13+7/11×1969/91=-30/1

Complete 2.1 fn

(22/3-17/3)×12/5=4/1

Comparisons

Ceil 0.4 in

-534091-302253 < 70395+49771

Ceil 1.4 in

-809034 < 652031

Ceil 2.4 in

-410000-51370 > -287597-173825

Ceil 3.4 in

-2×8 > 168000÷(-4)

Point 0.3 dp

2.718 < 2.731

Point 0.4 dp

640.109-206.11 < 168.451+489.456

Point 2.4 dp

208.45+227.647 > 237.832-55.198

Point 3.3 dp

0.75×29.44 < 18.785×4.8

Point 3.4 dp

280.824÷4 < 561.664÷8

Doted 0.3 dn

31.482+33.017 > -55.968+57.937

Doted 1.3 dn

-15 < 100

Doted 1.4 dn

-277.04 < -225.364

Doted 2.3 dn

18.616+32.521 < 2.826+53.079

Doted 2.4 dn

564.555+314.218 > 123.282-414.587

Doted 3.3 dn

-52.38÷(-1.746) > 97.648÷5.744

Improper 0.3 fp

167/2÷835/618 > 15/2÷30/247

Improper 3.3 fp

298/3÷1192/123 > 3/10×5/2

3/4+1/4 = 3/4+1/4

-5/1 < -7/8

-11384/127 < 623/9

-309/62-27/62 < -3/22-5/44

Descent 3.1 fn

2/3×3/4 > -1/5÷(-1/2)

Descent 3.2 fn

3/8÷1/16 = 9/1×2/3

Equations

979+x÷5=951

5-36×x=365

(-x-220)×32=320

y+x=10

Rounding

Rounding 0.3 dp

80÷19.708≈4.06

Rounding 3.3 dp

70÷51.916≈1.35

Language Exercises

Russian Vocabulary 1.5

т нцор

Russian Vocabulary 3.4

сув нир

English Vocabulary 1.4

est blish

English Vocabulary 2.4

horiz ntal

Lexicon 1.4

b havior [conduct]

Infinitive 2.2

bid [bid]

14+

Recommended for adolescents from the age of fourteen

Integer Examples

Intellect 0.3 in

-1687-30×91=-4417

Intellect 1.3 in

-2772÷18-5199=-5353

Intellect 2.3 in

3984-3780÷270+3513=7483

Intellect 3.3 in

8666-(90+979)×30=-23404

Logics 0.3 in

25×(-19)=-475

Logics 1.3 in

8712÷36=242

Logics 2.3 in

-4788÷(-2)÷(-2)=-1197

Logics 3.3 in

(50÷(-25))×(-250)=500

Logics 4.3 in

147×35÷(-7×(-7))=105

Decimal Examples

74÷2=37

115.2÷384=0.3

57×0.032=1.824

9.072÷0.648=14

0.52÷1.04=0.5

1.7×64÷68=1.6

(143.208÷3.4)÷405=0.104

Definition 0.3 dp

4.2×(0.5+0.9)÷0.245=24

Definition 0.4 dp

415.368+90.288÷16+233.677=654.688

Definition 1.4 dp

309.816+1.84÷10=310

Definition 2.4 dp

368.51-2.3×0.02+189.536=558

Definition 3.3 dp

(62.824-61.816)÷(1.451-1.367)=12

Definition 3.4 dp

8.125×(2.256+1.512)÷13=2.355

Negatory 0.3 dn

50.5-(0.652+0.158)×50=10

Negatory 0.4 dn

329-437.4÷0.6=-400

Negatory 1.4 dn

-2.16×100-577.811=-793.811

Negatory 2.4 dn

778+56.16×0.025-997.19=-217.786

Negatory 3.3 dn

-72.163-(78.991-85.591)÷1.5=-67.763

Negatory 3.4 dn

-2×(-154.456-6.544)×0.002=0.644

Residual_ENG 1.3 dp

58÷100=0.58

Fraction Examples

Denominator 0.3 fn

-8046/205+2427/410-383/82=-38/1

Denominator 2.3 fn

-1/5-7/15-1671/22=-5057/66

Denominator 3.3 fn

-398/11-(-31967/561+23603/561)=-234/11

Fragment 0.3 fp

27/2×1/27×2/3=1/3

Fragment 3.3 fp

(1/2×134/3)÷67/81=27/1

Limited 0.2 fp

843/28+285/8÷95/48=1347/28

Limited 1.3 fp

152/3-12/13×133/18=570/13

Limited 2.2 fp

(88/3-1/3)×14/29=14/1

Complete 0.2 fn

413/30+32/5×25/48=171/10

Complete 1.3 fn

82757/979+141/4÷1551/28=7580/89

Complete 2.2 fn

-(49/2-51/2)×5/53=5/53

Comparisons

Doted 0.4 dn

-1.728×15 < -145.348÷(-10.382)

Doted 3.4 dn

44.16×(-14.625) < 19×(-33.991)

Descent 0.3 fn

-45457/472 < -807/10

Descent 2.3 fn

-79743/989+1097/43 < 467/23+361/230

Descent 3.3 fn

25383/620÷8461/184 < -6071/110÷(-467/11)

Equations

8x²=800

5x²=405

2x²-6x=0

3x²-3x-6=0

x+y=19

x-y=14

90y÷10x=30

x+4y=38

y+3x=-24

y+x=13

-144x÷4y=-108

-5y+5x=0

Language Exercises

Russian Vocabulary 2.5

б ллон

English Vocabulary 1.5

commis ion

English Vocabulary 2.5

encoura ement

English Vocabulary 3.4

or ginal

Lexicon 1.5

surpri ingly [amazingly]

Lexicon 2.4

anal se [decompose]

Infinitive 1.3

win won [win]

Infinitive 3.2

fought [fight]

15+

Recommended for adolescents from the age of fifteen

Integer Examples

Logics 0.4 in

-975744÷44÷(12×22)=-84

243×426=103518

-230400÷96÷(-75)=32

1000÷(2000÷20)=10

-288000÷(100×(-40))×875=63000

Fraction Examples

Limited 0.3 fp

(115/137-61/137)×313/9=1878/137

Limited 2.3 fp

(211/650+359/650)×134/285=134/325

Complete 0.3 fn

(1/2-9/2)×79/854=-158/427

Complete 2.3 fn

-351/908÷(1/10+2/5)=-351/454

Equations

94x²=84600

70x²=85750

-61x²-1220x=0

x²-56x+559=0

20x×2y=40000

x+y=1740

y×9x=45000

55y+44x=6490

-y-x=-4

-y-x=-4

828x÷12y=-46

-4y-69x=-2780

Language Exercises

Russian Vocabulary 3.5

н верх

English Vocabulary 3.5

c mfortably

Lexicon 2.5

pron nciation [utterance]

Infinitive 2.3

overdraw [overdraw]

16+

Recommended for adolescents from the age of fifteen

Equations

180x²=648000

231x²=1006236

950x²-148200x=0

2x²-892x+94458=0

132x×6y=506880

32x×11y=5896000

48y-x=43360

108y-930x=183060

-y+x=101

-10x×4y=-3149280

821y+122x=-644484

Language Exercises

Infinitive 3.3

sight-read [sight-read]

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