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+2=7

Beginner 2.1 ip

10-2=8

Beginner 3.1 ip

5+5=10

Step-by-step Tasks

3+2=5

2+3=5

5+2=7

1+0=1

3+1=4

4-2=2

5-2=3

5-2=3

2-1=1

2-2=0

10-3=7

Recommended for children from six years

Integer Examples

2+13=15

4-2=2

2-1=1

10-3-4=3

Step-by-step Tasks

7+2=9

7+3=10

5+3=8

4+1=5

4+6=10

5+4=9

7+5=12

2+6=8

3+8=11

2+7=9

5+0=5

4+2=6

5+8=13

9+7=16

2-1=1

6+10=16

1+10=11

9-4=5

7-5=2

10-1=9

14-2=12

14-3=11

7-6=1

15-7=8

17-2=15

16-8=8

11-8=3

13-9=4

15-10=5

12-10=2

Recommended for children from seven years

Integer Examples

5-3=2

33+47=80

95-41=54

64+29=93

20-13+5=12

1+(5+1)=7

Step-by-step Tasks

13+5=18

5+5=10

3+13=16

22+4=26

22+3=25

14+11=25

5+5=10

16-15=1

15+11=26

19+6=25

7+0=7

10-9=1

18-1=17

12-2=10

23-13=10

17-4=13

16-15=1

18-6=12

27-7=20

8-8=0

1×5=5

2×4=8

0×1=0

7÷1=7

Comparisons

Natural 1.1 ip

8 > 4

Natural 2.1 ip

1+0 < 2+6

Language Exercises

Russian Vocabulary 1.1

заш л

Recommended for children from eight years

Integer Examples

20-2=18

98+92=190

775-5=770

20+703=723

52-48+6=10

20-(6+10)=4

4×25=100

92÷23=4

20÷2=10

51+28=79

70-34=36

66+32=98

Step-by-step Tasks

29+1=30

29+6=35

8+2=10

8+9=17

80+0=80

27+23=50

7+2+1=10

20-8=12

23-13=10

12-9=3

14-6=8

39-9=30

50-10=40

10×3=30

2×1=2

4×9=36

10×4=40

5×0=0

3×3=9

2×10=20

6×0=0

8×5=40

7×7=49

1×6=6

7×10=70

8×4=32

8×7=56

10×9=90

0×9=0

10×2=20

10×8=80

14÷2=7

12÷2=6

12÷3=4

16÷2=8

0÷4=0

4÷2=2

15÷5=3

0÷4=0

50÷5=10

12÷6=2

10÷5=2

14÷7=2

36÷4=9

15÷3=5

0÷8=0

0÷8=0

45÷9=5

35÷5=7

70÷7=10

10÷10=1

Comparisons

10 > 4

72 > 30

20+53 > 6+14

3÷3 < 8÷4

Equations

Linear 1.1 ip

x-2=2

Linear 2.1 ip

x÷2=2

Language Exercises

Russian Vocabulary 1.2

х зяйство

Russian Vocabulary 2.1

ме р

Russian Vocabulary 3.1

восем

English Vocabulary 1.1

m rch

English Vocabulary 2.1

hop

Lexicon 1.1

ag in [anew]

Lexicon 2.1

ld [aged]

Recommended for children from nine years

Integer Examples

12+(50+36)=98

145+173+372=690

97-(5+60)=32

10×10=100

28×21=588

618÷6=103

9×50=450

4×4×4=64

3×(4×2)=24

4×(8÷2)÷2=8

29÷9=3(2)

4320+5659=9979

8000-483=7517

2313+7687=10000

54×5=270

27÷3=9

72÷2-16=20

42-40÷20+36=76

40÷4=10

38÷4=9(2)

Step-by-step Tasks

2×23=46

11×6=66

14×3=42

10×2=20

17×4=68

12×5=60

12×1=12

20×5=100

20×1=20

6×18=108

7×14=98

6×15=90

17×8=136

16×5=80

9×11=99

6×14=84

15×10=150

20×8=160

2×20=40

10÷2=5

44÷11=4

18÷3=6

26÷2=13

56÷4=14

95÷5=19

24÷2=12

54÷3=18

100÷50=2

60÷6=10

119÷7=17

56÷7=8

88÷8=11

60÷10=6

108÷9=12

28÷7=4

420÷20=21

72÷8=9

32÷4=8

Comparisons

56-35 > 10+4

87 < 580

671-177 = 980-486

100÷50 < 3×26

Equations

Linear 1.2 ip

x+63=77

Linear 2.2 ip

x÷2=6

Linear 3.1 ip

x÷4+8=10

Language Exercises

Russian Vocabulary 1.3

през дент

Russian Vocabulary 2.2

изв ни

Russian Vocabulary 3.2

д ревня

English Vocabulary 3.1

w lk

10+

Recommended for children from ten years

Integer Examples

764-(85+224)=455

454839+475161=930000

691254-681381=9873

837697-262637=575060

431-(247-156)=340

892÷4=223

56×72=4032

8010÷10=801

87×85=7395

400÷4÷2=50

(69÷3)÷23=1

17×(39÷3)÷221=1

111÷11=10(1)

157000+281637=438637

949800-642000=307800

796529+201471=998000

9047×2=18094

2373×47=111531

1000÷4=250

54÷6+68÷4=26

137×3+376=787

124+92÷23+422=550

(4+7)×(7+2)=99

144÷9=16

48÷16=3

Comparisons

Natural 0.3 ip

2×24 < 4×19

Natural 1.4 ip

920151 > 560411

Natural 2.4 ip

895326+79974 > 602031-124272

Natural 3.3 ip

536÷67 = 4×2

Equations

x+3=4

x-250=240

x÷25=4

47+x×4=47

3×(9-x)=9

Rounding

Round 1.1 ip

256≈26

Round 1.2 ip

8686≈87

Round 2.1 ip

28+24≈5

Language Exercises

Russian Vocabulary 2.3

п недельник

English Vocabulary 1.2

la d

English Vocabulary 2.2

som

Lexicon 1.2

t mato [love apple]

Lexicon 2.2

l kely [probably]

Infinitive 1.1

undergo undergone [undergo]

11+

Recommended for children from the age of eleven

Integer Examples

Beginner 0.5 ip

1961+910910=912871

Beginner 4.5 ip

114479+71580+313941=500000

Beginner 5.5 ip

517108+(102556+80200)=699864

-4-3=-7

-670307-6323=-676630

-2-1+0=-3

160÷16÷2=5

5×15×32=2400

(300÷6)×180=9000

4×3×(23×11)=3036

882÷10=88(2)

22227×233=5178891

4080÷12=340

570-800÷(280-272)=470

1155+96÷32=1158

544-2100÷14=394

695+2000÷16÷25=700

492+360÷(59-57)=672

(70+61)×(3822-3318)=66024

Divisor_ENG 1.3 ip

8897÷31=287

Remainder_ENG 1.3 ip

300÷78=3(66)

Decimal Examples

9-(9.4-7.5)=7.1

70.2-39.4+6=36.8

8.4-0.4=8

94.7-8.3=86.4

4.6-2.4+4.8=7

67.4+31.9-46.5=52.8

2.4+(0.1+1)=3.5

22.1+(9-0)=31.1

3.3÷0.6=5.5

6.8×8=54.4

96÷1.5=64

1.4×2.5=3.5

Divisional_ENG 1.1 dp

95.2÷8=11.9

Fraction Examples

Numerator 1.1 fp

2/3-2/3=0/1

Comparisons

416595 < 610000

490000÷50 > 544×18

-2×(-3) > 10÷(-10)

6 > -3

-9-0 < 7+0

8÷4 < 8÷2

78.7 > 29.7

12.8+7.6 < 81.5-54.2

1/2 > 1/6

90/47 < 4/1

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

Equations

x×15=60

352÷(5+x)=32

459÷x+539=590

68÷(14+x)=2

253×(x-643)=0

3+x=-4

-x×(-4)=8

Rounding

68.5≈69

94.7-16.4≈78

529≈53

3×1404≈42

250235≈250

674799≈675

1780+667≈24

220000+66769≈287

11×91≈100

1123×3≈34

737856÷122≈6

Language Exercises

Russian Vocabulary 1.4

цив лизованный

Russian Vocabulary 3.3

гр мматика

English Vocabulary 1.3

e pire

English Vocabulary 2.3

nless

English Vocabulary 3.2

m ving

Lexicon 1.3

brin [bear]

Infinitive 2.1

backslide [backslide]

12+

Recommended for children from the age of twelve

Integer Examples

4+7-10=1

7+10-17=0

-30-65=-95

9-2=7

-45-23=-68

15+8-4=19

-7+14-37=-30

-7-(1-8)=0

-10-(17-11)=-16

-3-(-11+100)=-92

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

-(14-20)-(19-10)=-3

-(100-100)-(49-19)=-30

20÷2×(78÷13)=60

100×142=14200

689850÷7=98550

849×664=563736

25×16×1000=400000

200×(25×5)=25000

417×32×(66÷22)=40032

71200×1008=71769600

6250÷25=250

-12÷2-75÷3=-31

25÷5+6=11

23+24÷4+41=70

-18-92÷(43-41)=-64

-36÷(-12÷(-6))=-18

-50÷5=-10

-16÷4×2=-8

-90÷(-2×9)=5

64÷(-2×4)÷4=-2

11135÷17=655

Decimal Examples

64.5+15.95=80.45

16.63+65.61=82.24

63.13-32.42-11=19.71

38.26-(94.55-82.63)=26.34

-7.5+0.5=-7

55.8-34=21.8

2-9.2=-7.2

5.9+73.4=79.3

4.7+6.9-9.7=1.9

-45.3-30-10=-85.3

3.7-(-3-2.4)=9.1

-5-(8.1+52.6)=-65.7

34÷10=3.4

80.64÷4.2=19.2

4.5×0.8=3.6

2×1.71=3.42

10.64÷19=0.56

1.2÷0.5=2.4

100÷2.5÷10=4

7.6÷(76×0.2)=0.5

71+(25.7-24.5)÷0.8=72.5

Definition 1.1 dp

1÷0.5+59.3=61.3

Definition 2.1 dp

10.4-0.8×5+75.7=82.1

Definition 3.1 dp

(42.9+9.9)÷(80.5-32.5)=1.1

Negatory 1.1 dn

-99+1.9×24=-53.4

Negatory 2.1 dn

89+50.4÷56-56.2=33.7

Residual_ENG 1.1 dp

58÷10=5.8

Divisional_ENG 1.2 dp

14.4÷2.4=6

Fraction Examples

Numerator 0.1 fp

4/9+2/9+1/6=5/6

Numerator 0.2 fp

29/5-(59/30-13/18)=41/9

7/6+23/78=19/13

1/3-2/9+2/3=7/9

41/9-68/15+14/45=1/3

5/9-(1/9+2/9)=2/9

122/29-(154/87-136/87)=4/1

-8/9+1/9=-7/9

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

2/9-2/9-1/3=-1/3

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

2/5×5/8=1/4

33/2÷99/26=13/3

1/2÷3/4÷5/3=2/5

10/16=5/8

8/80=1/10

5/6÷15/2+1/3=4/9

Comparisons

2+4 > -31+25

-842÷(-2) > -840÷24

-61 < 86

-520 < 700

-14+74 > -30-60

-726+210 < 848-597

-12×(-3) > 68÷(-2)

828÷(-138) > 16×(-6)

1.8×5 = 45.9÷5.1

40.02 < 48

77.77 > 77.76

34.588 > 23

570 < 697.732

9.2+50.64 > 0.89+11.16

Point 2.3 dp

39.844-21.759 < 80.249-59.756

0.8×80 > 75.6÷5.4

63.76÷8 > 3.18×2.5

15.2+3.5 > -18-10.2

-95.2÷(-1.36) > 99.6÷1.66

28.1 < 33.6

76.46 < 97.17

5.3+11.4 < 76.5-2.9

35.88-2.98 < 74.36+12.64

-0.8×2 > 40÷(-2)

-34.8÷1.16 < 3.9×24

3/5-1/10 = 1/4+1/4

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

71115/751 > 344/5

14/3+25/39 > 49/5-347/65

Improper 2.3 fp

3/17+287/493 < 716/11-10858/319

Improper 3.1 fp

8/9×3/8 < 1/10÷1/4

Improper 3.2 fp

1/2÷7/12 < 48/7÷96/47

Descent 1.1 fn

4/5 > -1/3

Descent 1.2 fn

367/50 > -503/70

Descent 2.1 fn

1/1-4/5 < 1/2-1/6

Equations

-x×2=-8

-x÷12-3=0

x+74=-11

x+720=0

x÷61=-1

-x×61=-610

10÷x+8=9

67-70÷x=62

-4×(3-x)=4

-36÷(98+x)=18

Rounding

67.3≈67

21.52≈21.5

20.35≈20.4

59.997≈60

54.99-15.71≈39.3

15.449+57.622≈73.07

25×1.4≈35

7.42×10≈74.2

Language Exercises

Russian Vocabulary 2.4

э спрессия

English Vocabulary 3.3

s mmer

Lexicon 2.3

gr nd [lordly]

Infinitive 1.2

rewrite rewrote [rewrite]

Infinitive 3.1

dream [dream]

13+

Recommended for adolescents from the age of thirteen

Integer Examples

Conversant 0.4 in

171-275=-104

Conversant 0.5 in

-203504-502786-200000=-906290

Conversant 1.4 in

151-465=-314

Conversant 2.4 in

-94-307+971=570

Conversant 2.5 in

548078-39883+61370=569565

Conversant 3.4 in

225+(429-110)=544

Conversant 3.5 in

866806+(-785762+337452)=418496

Conversant 4.4 in

(2+962)+(310-484)=790

Conversant 4.5 in

(211456-776738)+(400000-207960)=-373242

2626293÷373=7041

-105-2×220=-545

-68÷4-536=-553

63+141×10-594=879

407-48÷(-14-2)=410

-11×(-306÷(-3))÷(-22)=51

2×30=60

50÷10×40=200

(-168÷(-6))÷(-4)=-7

2×(-7×(-5))×(-5)=-350

Divisor_ENG 1.5 ip

4564864÷128=35663

Decimal Examples

Partitive 0.4 dp

524.517-(21.608+486.975)=15.934

Partitive 1.4 dp

427.596-254.6=172.996

Partitive 2.4 dp

457.221-96.696-169.921=190.604

Partitive 3.4 dp

231.117+(5.773+567.584)=804.474

Split 0.3 dn

-87.46+(-90+98.79)=-78.67

Split 0.4 dn

-230+(-50-620)=-900

Split 1.3 dn

-44.39-35.61=-80

Split 1.4 dn

488.989+344.754=833.743

Split 2.3 dn

-69.23+90.32-50.09=-29

Split 2.4 dn

229.33+405.892-147.64=487.582

Split 3.3 dn

-94.58-(-12-47.58)=-35

Split 3.4 dn

-316.588-(-323.052+646.464)=-640

20÷5=4

0.924÷0.5=1.848

3.75×0.04=0.15

31.68÷5.5=5.76

2.5×5.904=14.76

24.48÷1.224=20

24×0.004=0.096

0.8×0.75÷30=0.02

3.125×12.8×0.88=35.2

(10.35×1.2)÷3.6=3.45

95.04÷(0.384×15.625)=15.84

Definition 0.2 dp

11.4+1.6÷40+43.01=54.45

Definition 1.2 dp

2÷0.8+67.5=70

Definition 1.3 dp

65.713+3.519×4=79.789

Definition 2.2 dp

51.25+0.6×0.2-2.37=49

Definition 2.3 dp

37.337+26.01÷15÷1.734=38.337

Definition 3.2 dp

(90-88.57)×(19.5+4.5)=34.32

Negatory 0.1 dn

63.2-43.2÷1.2=27.2

Negatory 0.2 dn

-2.88×0.25-3.2÷12.8=-0.97

Negatory 1.2 dn

27.97+24.64÷8=31.05

Negatory 1.3 dn

-4.1×16+93.42=27.82

Negatory 2.2 dn

-26.2+0.5×25.6÷0.25=25

Negatory 2.3 dn

-15.912÷13-46.872÷2.88=-17.499

Negatory 3.1 dn

0.5×(-0.5-0.3)×50=-20

Negatory 3.2 dn

96.9÷(-0.74-1.81)÷50=-0.76

Residual_ENG 1.2 dp

5÷50=0.1

Divisional_ENG 1.3 dp

0.142÷2=0.071

Fraction Examples

Numerator 0.3 fp

1295/13-502/13-8495/427=17552/427

Numerator 1.3 fp

4264/695+1556/695=1164/139

Numerator 2.3 fp

1943/25-1939/75-29133/740=5549/444

Numerator 3.3 fp

1596/403+(33114/403-624/31)=66/1

Denominator 0.2 fn

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

Denominator 1.2 fn

-299/30+3/2=-127/15

Denominator 1.3 fn

-380/13+770/13=30/1

Denominator 2.2 fn

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

Denominator 3.2 fn

71/95-(-1/5-269/38)=305/38

Fragment 0.1 fp

1/2÷1/9÷5/4=18/5

Fragment 0.2 fp

1/3×51/19×741/17=39/1

Fragment 1.3 fp

17/7÷17/28=4/1

Fragment 2.2 fp

3/2×1/3÷3/20=10/3

Fragment 2.3 fp

2/3×297/4÷2343/38=57/71

Fragment 3.1 fp

(3/2÷1/6)÷27/10=10/3

Fragment 3.2 fp

(13/12×219/13)÷73/24=6/1

330/60=11/2

3/2×14/9+2/3=3/1

95/3÷19/28-29/3=37/1

21/4÷(37/8-25/8)=7/2

-4/3÷(-2/3-2/3)=1/1

-48/5+1/4÷5/2=-19/2

-286/9÷550/21+4/5=-31/75

Complete 2.1 fn

(22/3-17/3)×12/5=4/1

Comparisons

Ceil 0.4 in

89146 < 172997

Ceil 1.4 in

115004 > -118056

Ceil 2.4 in

766099-218093 > -843637+145103

Ceil 3.4 in

-668800÷2 > -788012÷2

Point 0.3 dp

46.453-6.383 > 48.731-8.667

Point 0.4 dp

241.937+48.063 < 320.282+452.885

Point 2.4 dp

280.564+165.62 = 730-283.816

Point 3.3 dp

76.38÷3.819 < 14.72×1.9

Point 3.4 dp

754.8÷11.1 < 856.32÷5.352

Doted 0.3 dn

75.693-50.918 < -9.088+89.088

Doted 1.3 dn

10.084 < 12.192

Doted 1.4 dn

-747.155 = -747.155

Doted 2.3 dn

70.664-35.885 > 1.631+33.128

Doted 2.4 dn

-438.891-258.86 < 405.505+292.242

Doted 3.3 dn

60.515÷1.235 > -14.4×(-2)

Improper 0.3 fp

473/10 < 11159/150

Improper 3.3 fp

1/4×176/47 < 471/17×2125/628

Descent 0.1 fn

3/5×(-1/2) < 1/2×3/5

Descent 0.2 fn

40/9÷(-60/67) < 5/2×(-12/35)

Descent 1.3 fn

213/254 < 9715/381

Descent 2.2 fn

2/1+8/15 < 8/5+223/95

Descent 3.1 fn

-2/3×(-1/2) > -1/2×(-2/9)

Descent 3.2 fn

-27/5×(-5/54) < -1/2÷(-1/2)

Equations

32×(-x)=960

29×x+848=-892

-756÷(-937+x)=36

y+x=12

Rounding

Rounding 0.3 dp

79÷84.703≈0.93

Rounding 3.3 dp

0.445×59.384≈26.43

Language Exercises

Russian Vocabulary 1.5

ц ллюлоза

Russian Vocabulary 3.4

к рректный

English Vocabulary 1.4

aspe t

English Vocabulary 2.4

enor ous

Lexicon 1.4

campai n [crusade]

Infinitive 2.2

stridden [stride]

14+

Recommended for adolescents from the age of fourteen

Integer Examples

Intellect 0.3 in

3224×11+4536=40000

Intellect 1.3 in

-1326-40×60=-3726

Intellect 2.3 in

-2726-50×22×75=-85226

Intellect 3.3 in

-94798+87780÷(91+19)=-94000

Logics 0.3 in

-5508÷(2×162)×(-99)=1683

495÷(-15)=-33

80÷(-20)÷(-2)=2

-528÷(16×(-3))=11

21×(-30×4)÷(-24)=105

Decimal Examples

63÷4=15.75

718.08÷5.984=120

17.25×0.004=0.069

5.28÷0.528=10

51.48÷3.75=13.728

0.76÷6.08÷125=0.001

(810÷28.125)×0.25=7.2

Definition 0.3 dp

72.842-1.28×15.625=52.842

Definition 0.4 dp

200+0.625×8+10=215

Definition 1.4 dp

309.816+1.84÷10=310

Definition 2.4 dp

120+3.9×6.8×1.25=153.15

Definition 3.3 dp

(62.824-61.816)÷(1.451-1.367)=12

Definition 3.4 dp

586.15-0.532÷(622.14-622.015)=581.894

Negatory 0.3 dn

-25.734+8×8.918=45.61

Negatory 0.4 dn

-185.6÷0.8+2.592÷0.006=200

Negatory 1.4 dn

100÷12.5-435.267=-427.267

Negatory 2.4 dn

475.958+720÷11.25÷51.2=477.208

Negatory 3.3 dn

-4.8÷(-0.564-1.936)÷0.064=30

Negatory 3.4 dn

(0.503+0.091)×(1+8)=5.346

Residual_ENG 1.3 dp

17÷40=0.425

Fraction Examples

Denominator 0.3 fn

1191/370+6719/70-15075/259=41/1

Denominator 2.3 fn

-108/7-22094/285+1782/19=88/105

Denominator 3.3 fn

3/13+(-3531/148+296/13)=-127/148

Fragment 0.3 fp

1/2×9/2÷1/16=36/1

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

28/33×5797/72-5285/297=10003/198

Limited 2.2 fp

377/15×(1/6+17/78)=29/3

Complete 0.2 fn

-(3/5+1658/95)÷686/47=-47/38

Complete 1.3 fn

-91/9-1/4×284/9=-18/1

Complete 2.2 fn

559/30÷(11/17-742/17)=-13/30

Comparisons

Doted 0.4 dn

-330 > -800

Doted 3.4 dn

3.125×(-16.896) < -13.845÷1.3

Descent 0.3 fn

-50/7×(-63/40) > -135/2÷405/314

Descent 2.3 fn

271/462+51/154 > -60/121-48007/726

Descent 3.3 fn

-39/11÷(-2841/143) > -402/5÷134/125

Equations

-x²+7x-10=0

8x²=8

-8x²+80x=0

x²+9x+14=0

x+y=13

x+y=180

6x÷5y=2

10y+4x=116

-10y×8x=800

-x+y=-6

-11x÷y=-11

-5y+5x=0

Language Exercises

Russian Vocabulary 2.5

якоб

English Vocabulary 1.5

respons bility

English Vocabulary 2.5

commun cation

English Vocabulary 3.4

equ valent

Lexicon 1.5

pro essional [vocational]

Lexicon 2.4

ab ent [gone]

Infinitive 1.3

behold beheld [behold]

Infinitive 3.2

foresee [foresee]

15+

Recommended for adolescents from the age of fifteen

Integer Examples

Logics 0.4 in

198×110=21780

Logics 1.4 in

-319×610=-194590

Logics 2.4 in

3600÷(-120)×(-414)=12420

Logics 3.4 in

1000÷(2000÷20)=10

Logics 4.4 in

75000÷(10×(-5))÷25=-60

Fraction Examples

Limited 0.3 fp

1/3÷19/39-77/304=131/304

Limited 2.3 fp

(367/760+93/760)×15599/598=821/52

Complete 0.3 fn

-831/31÷(1/2-139/2)=277/713

Complete 2.3 fn

(-185/11-145/11)÷17640/331=-331/588

Equations

-24x²+48x=0

16x²=40000

-53x²+3710x=0

19x²-19x-38=0

y-x=50

x+y=760

y×14x=43904

89x+48y=3840

68640x÷77y=624

-x-y=-26

-2160x÷72y=-60

-5x+51y=4583

Language Exercises

Russian Vocabulary 3.5

ц линдр

English Vocabulary 3.5

fore gn

Lexicon 2.5

entert inment [amusement]

Infinitive 2.3

beset [beset]

16+

Recommended for adolescents from the age of fifteen

Equations

2x²-540x-33488=0

930x²=9300000

240x²-26160x=0

-2x²-6x+680=0

8x×5y=1984000

64x×19y=2593728

20y+13x=22499

-162y÷27x=3

-x+y=399

6336x÷3y=6688

223y-115x=-78090

Language Exercises

Infinitive 3.3

sent [send]

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