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

1+4=5

Beginner 2.1 ip

9-2=7

Beginner 3.1 ip

6-5=1

Step-by-step Tasks

3+1=4

2+3=5

3+3=6

3+0=3

2+1=3

4-1=3

3-1=2

3-2=1

8-1=7

7-2=5

3-3=0

Recommended for children from six years

Integer Examples

9+7=16

16-9=7

16-1=15

6-5+8=9

Step-by-step Tasks

2+8=10

3+2=5

3+7=10

4+5=9

4+6=10

5+9=14

5+3=8

0+6=6

4+5=9

4+7=11

8+7=15

4+6=10

8+2=10

5+9=14

2-1=1

10+4=14

8+10=18

7-4=3

8-5=3

11-2=9

15-4=11

5-2=3

7-6=1

15-7=8

10-5=5

17-8=9

16-7=9

19-9=10

15-10=5

13-10=3

Recommended for children from seven years

Integer Examples

3+(6+1)=10

1+94=95

95-41=54

56+0=56

2+0+9=11

8-(10-8)=6

Step-by-step Tasks

11+7=18

5+5=10

9+0=9

12+5=17

13+23=36

12+4=16

5+10=15

18-15=3

2+25=27

14+16=30

27+3=30

9-6=3

5-1=4

18-12=6

4-3=1

11-4=7

12-5=7

18-6=12

19-7=12

8-8=0

3×1=3

1×2=2

2×7=14

7÷1=7

Comparisons

Natural 1.1 ip

6 > 5

Natural 2.1 ip

1+3 < 10-1

Language Exercises

Russian Vocabulary 1.1

к стрюля

Recommended for children from eight years

Integer Examples

14-(2+12)=0

892+54=946

779-1=778

968-658=310

77-3-22=52

19+(9-8)=20

2×3=6

90÷2=45

5×2=10

74+26=100

70-34=36

16+80=96

Step-by-step Tasks

26+14=40

28+2=30

8+3=11

8+9=17

90+10=100

39+11=50

7+0+10=17

27-8=19

24-14=10

12-9=3

3-0=3

39-29=10

20-10=10

10×3=30

10×2=20

4×9=36

10×4=40

5×10=50

10×5=50

2×10=20

10×6=60

7×5=35

7×7=49

9×6=54

5×2=10

0×8=0

8×10=80

9×1=9

2×9=18

10×8=80

10×2=20

10÷2=5

12÷2=6

18÷3=6

12÷3=4

0÷4=0

8÷1=8

0÷5=0

24÷4=6

10÷1=10

12÷6=2

6÷6=1

56÷7=8

0÷4=0

10÷2=5

80÷8=10

0÷3=0

54÷9=6

45÷5=9

80÷8=10

100÷10=10

Comparisons

2÷2 < 4×1

61 < 75

61+7 > 49-4

9÷3 < 4×1

Equations

Linear 1.1 ip

x+4=9

Linear 2.1 ip

10×x=10

Language Exercises

Russian Vocabulary 1.2

н уклюжий

Russian Vocabulary 2.1

к пуста

Russian Vocabulary 3.1

п нал

English Vocabulary 1.1

r d

English Vocabulary 2.1

s ze

Lexicon 1.1

tar [luminary]

Lexicon 2.1

a nt [relative]

Recommended for children from nine years

Integer Examples

27+1=28

897+24-626=295

82-(48-36)=70

20÷2×(3×2)=60

7×32=224

568÷8=71

406÷2=203

4×4×4=64

5×(10×2)=100

24÷(4÷2)÷4=3

29÷9=3(2)

2601+3664=6265

7149-4065=3084

2194+206=2400

45×2=90

16÷2=8

87-34÷2=70

28+16×4÷2=60

60÷6=10

41÷6=6(5)

Step-by-step Tasks

2×23=46

2×11=22

3×11=33

10×2=20

4×12=48

12×5=60

4×3=12

5×16=80

10×4=40

19×6=114

13×7=91

9×15=135

17×8=136

18×3=54

20×9=180

19×9=171

10×16=160

20×19=380

6×12=72

16÷2=8

55÷11=5

51÷3=17

30÷3=10

32÷4=8

40÷5=8

24÷6=4

54÷3=18

100÷10=10

18÷6=3

84÷7=12

91÷7=13

104÷8=13

60÷10=6

144÷9=16

98÷7=14

260÷20=13

27÷3=9

55÷11=5

Comparisons

80÷10 < 90÷10

125 < 539

738-94 < 460+420

35÷7 < 80÷5

Equations

Linear 1.2 ip

x-41=1

Linear 2.2 ip

42÷x=7

Linear 3.1 ip

10-5×x=5

Language Exercises

Russian Vocabulary 1.3

пл тформа

Russian Vocabulary 2.2

оранж вый

Russian Vocabulary 3.2

ж лезо

English Vocabulary 3.1

gr y

10+

Recommended for children from ten years

Integer Examples

764-(85+224)=455

92877+7123=100000

691254-681381=9873

123667+740701=864368

431-(247-156)=340

28÷2×27=378

9×32=288

5600÷20=280

3600÷50=72

36÷4÷9=1

(120÷2)÷3=20

10÷(5×2)×20=20

60÷5=12

347811+402227=750038

647490-586112=61378

457348-227348=230000

7298×9=65682

5749×42=241458

106÷2=53

45+(54-38)÷2=53

840÷15+312=368

579-132÷6-56=501

92-(3+5)×9=20

637÷7=91

28÷4=7

Comparisons

Natural 0.3 ip

968 > 688

Natural 1.4 ip

611200 < 611247

Natural 2.4 ip

978592-119645 > 300438-238438

Natural 3.3 ip

360÷9 = 560÷14

Equations

7×x=7

x-262=38

x×50=450

80÷x+6=8

9÷(x+1)=3

Rounding

Round 1.1 ip

509≈51

Round 1.2 ip

9156≈92

Round 2.1 ip

826-689≈14

Language Exercises

Russian Vocabulary 2.3

оз рничать

English Vocabulary 1.2

range

English Vocabulary 2.2

c lled

Lexicon 1.2

ph ne [call]

Lexicon 2.2

ar und [round]

Infinitive 1.1

freeze frozen [freeze]

11+

Recommended for children from the age of eleven

Integer Examples

Beginner 0.5 ip

900000-320000=580000

Beginner 4.5 ip

957089-7288-549801=400000

Beginner 5.5 ip

291757+(668981-380000)=580738

Conversant 1.1 in

-4+4=0

Conversant 1.5 in

147594-525292=-377698

-2-1+0=-3

40×21×2=1680

400÷50×1250=10000

(64÷8)×6=48

10×(69÷3)×10=2300

654÷100=6(54)

85000×103=8755000

1479÷29=51

400÷10+21×10=250

9600+3200÷200×25=10000

2000-176÷44=1996

3528+81×32×16=45000

(460-450)×(3+2)=50

800+(4842-3742)×72=80000

Divisor_ENG 1.3 ip

8897÷31=287

Remainder_ENG 1.3 ip

96÷3=32

Decimal Examples

3+(9-8.5)=3.5

21-(94.5-74.7)=1.2

0.1+7=7.1

79+7.9=86.9

9.6-6.8+5.2=8

46.1+64.8-85.4=25.5

5.7+(4-4)=5.7

22.1+(76.9-19.9)=79.1

27.6÷1.5=18.4

2×3.3=6.6

7.2÷1.8=4

44.8÷2=22.4

Divisional_ENG 1.1 dp

95.2÷8=11.9

Fraction Examples

Numerator 1.1 fp

1/6+1/2=2/3

Comparisons

Natural 0.4 ip

890114-40114 > 305002+36972

13×16 < 35732÷2

-3 < 7

-7 < 3

-1-3 < 2-0

6÷(-3) = 6÷(-3)

91 > 12.2

81.4-79.4 < 3.9+83.3

8/9 < 1/1

20/37 < 661/74

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

Equations

x×15=60

x+753=903

180-720÷x=0

15×(x-44)=30

220×(795-x)=440

x+5=3

-x×(-9)=-9

Rounding

86.6≈87

6.9+38.1≈45

97+168≈27

3×1404≈42

894105-359965≈534

102436≈102

7376-3006≈44

174454+351394≈526

988÷13≈8

9646÷2≈48

317850÷489≈1

Language Exercises

Russian Vocabulary 1.4

вер вание

Russian Vocabulary 3.3

пр дирчиво

English Vocabulary 1.3

st te

English Vocabulary 2.3

ab ence

English Vocabulary 3.2

fr end

Lexicon 1.3

min ral [inorganic]

Infinitive 2.1

partake [partake]

12+

Recommended for children from the age of twelve

Integer Examples

-4+(-1-0)=-5

6-3=3

-51+41=-10

8-16=-8

58-68=-10

-20+14+10=4

-65+6+100=41

0-(6+4)=-10

13+(6-18)=1

28+(-1-38)=-11

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

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

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

300×1800=540000

247×239=59033

293524÷4=73381

155×982=152210

583200÷72÷4=2025

216÷(18×2)=6

744192÷64÷(19×34)=18

51004×1300=66305200

2400÷24=100

-70-20÷(2+2)=-75

-24×2-35=-83

-4×2+2×49=90

65-(-3-2)×3=80

-4×3×(14÷2)=-84

2×(-9)=-18

12÷4×(-2)=-6

-90÷(-2×9)=5

-4×(-2)×(3×4)=96

12000÷60=200

Decimal Examples

64.5+15.95=80.45

11.58+84.27=95.85

70-58+33=45

65-(50+10.22)=4.78

1.8+5.1=6.9

-77.5+41=-36.5

7-4.2=2.8

-16.6+94.5=77.9

-4+2.1-2.4=-4.3

-30.6-32+9.6=-53

2.9-(-1.8+3)=1.7

-7+(-14.5-70.1)=-91.6

47÷5=9.4

2.86÷0.13=22

0.9×10=9

1.92×32.5=62.4

8.4÷7.5=1.12

6.84÷7.2=0.95

10.5×6×0.4=25.2

(10.3÷20.6)×13.6=6.8

93.7+1.5÷3÷0.5=94.7

1.2-0.5×0.4=1

32+8÷3.2-4.5=30

(42.9+9.9)÷(80.5-32.5)=1.1

Negatory 1.1 dn

-99+1.9×24=-53.4

Negatory 2.1 dn

95-0.6×32.5÷0.1=-100

Residual_ENG 1.1 dp

51÷10=5.1

Divisional_ENG 1.2 dp

0.09÷0.6=0.15

Fraction Examples

1/2-1/4+3/8=5/8

2/3+131/15=47/5

33/4-3/4=15/2

3/8+1/8+2/5=9/10

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

Numerator 3.1 fp

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

Numerator 3.2 fp

1/8+(63/8-58/31)=190/31

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

-1/8-3/4=-7/8

-1/4-1/4+1/2=0/1

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

3/4×68/7=51/7

13/15×61/13=61/15

3/5÷1/2÷3/2=4/5

56/8=7/1

24/72=1/3

49/9+1/2÷9/4=17/3

Comparisons

-38×2 < 16÷(-2)

-250-390 < 731+50

-100 < 4

-139 = -139

-11-49 < -6+1

-87-519 < -442-116

-11×8 < 96÷(-2)

-9×(-54) < -24×(-21)

36 > 25.4

40.02 < 48

81.89 > 51.14

67.563 < 67.566

811.262 > 811.242

2.79+2.8 < 65.46-45.46

Point 2.3 dp

26.216+17.634 > 0.628+2.002

Point 3.1 dp

14.5×6.8 > 27×0.5

Point 3.2 dp

42.3÷5 < 16.56×0.75

Doted 0.1 dn

-26.8-14.6 = 20.1-61.5

Doted 0.2 dn

12.6-82.6 < 3.59+9.41

21.5 > -92

-32.03 < 10

5.3+11.4 < 76.5-2.9

-9.58-32.98 < -60+48.42

Doted 3.1 dn

77.5÷(-15.5) = 33÷(-6.6)

Doted 3.2 dn

-39÷1.95 > 1.32×(-39)

Improper 0.1 fp

2/3÷5/6 > 1/6÷5/9

Improper 0.2 fp

19/2÷190/89 = 13/15×267/52

Improper 1.3 fp

1703/128 > 71/352

Improper 2.2 fp

163/29-97/29 < 181/19-126/95

Improper 2.3 fp

455/17-268/17 < 1/2+23/2

Improper 3.1 fp

8/9×3/8 < 1/10÷1/4

Improper 3.2 fp

3/4×16/27 < 348/65÷116/13

Descent 1.1 fn

-1/3 > -2/5

Descent 1.2 fn

12/13 > 1/2

Descent 2.1 fn

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

Equations

-x×2=-8

44÷(-x)=2

-1+x=49

-104+x=854

80÷(-x)=-2

x×31=806

-x÷10-9=-8

67-70÷x=62

-(x-5)×2=-10

36÷(-x-82)=6

Rounding

80.9-15.9≈65

62.56÷3.03≈20.6

17.03≈17

24.999≈25

29.55+63.64≈93.2

99.255-49.624≈49.63

93.3÷28≈3

70÷2≈35

Language Exercises

Russian Vocabulary 2.4

просв щённый

English Vocabulary 3.3

cl mbing

Lexicon 2.3

attac [join]

Infinitive 1.2

leap leapt [leap]

Infinitive 3.1

make [make]

13+

Recommended for adolescents from the age of thirteen

Integer Examples

Conversant 0.4 in

-875-(-494+440)=-821

Conversant 0.5 in

-270000-29000-1000=-300000

Conversant 1.4 in

-414+598=184

Conversant 2.4 in

-150-180-404=-734

Conversant 2.5 in

-118119+880000-889743=-127862

Conversant 3.4 in

-172-(-877+488)=217

Conversant 3.5 in

666600-(130000+990000)=-453400

Conversant 4.4 in

(50+199)-(544-575)=280

Conversant 4.5 in

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

20000÷100=200

-593-384÷(2+2)=-689

-672+340÷4=-587

-457+90÷30-347=-801

-8+(196+98)÷2=139

-37×(-21÷(-3))÷37=-7

24÷(-3)=-8

-10÷5×405=-810

(-168÷(-6))÷(-4)=-7

-600÷(-3)÷(550÷110)=40

Divisor_ENG 1.5 ip

1500000÷100=15000

Decimal Examples

Partitive 0.4 dp

461.965+76+149.369=687.334

Partitive 1.4 dp

11+151=162

Partitive 2.4 dp

9.226+380-334.3=54.926

Partitive 3.4 dp

160.427+(600-260.427)=500

Split 0.3 dn

90-(9.88+99.84)=-19.72

Split 0.4 dn

370.1-(-19.537+570)=-180.363

Split 1.3 dn

-93.76+11=-82.76

Split 1.4 dn

558-592.917=-34.917

Split 2.3 dn

-36.27+86.24-95.42=-45.45

Split 2.4 dn

543.668-193.87-949.798=-600

Split 3.3 dn

-40+(-3.06-48.82)=-91.88

Split 3.4 dn

389.203+(-574.956+293)=107.247

73÷25=2.92

0.924÷0.5=1.848

(0.6×0.6)÷4=0.09

9.6÷1.28=7.5

6.075×5.12=31.104

0.644÷64.4=0.01

1.1×0.04=0.044

0.8×0.5×24.3=9.72

3.9÷2.6×65=97.5

1.2÷(15×2)=0.04

(25.502÷51.004)×3.584=1.792

Definition 0.2 dp

88.81-2.2÷27.5-66.4=22.33

Definition 1.2 dp

2×0.04+9.95=10.03

Definition 1.3 dp

73.2-7.344÷2.295=70

Definition 2.2 dp

60.27+4.32÷8.64×11.14=65.84

Definition 2.3 dp

44.236-34.56÷22.5÷1.2=42.956

Definition 3.2 dp

30.47+(49.01-42.51)×0.06=30.86

Negatory 0.1 dn

48×0.1+1.6÷16=4.9

Negatory 0.2 dn

41.24-(7.99+34.25)×0.75=9.56

Negatory 1.2 dn

27.97+24.64÷8=31.05

Negatory 1.3 dn

-84.456÷93.84+62.813=61.913

Negatory 2.2 dn

-0.98÷2.45-15.68÷98=-0.56

Negatory 2.3 dn

8.779+9.828÷27+77.51=86.653

Negatory 3.1 dn

7.6-(72-71.2)×60=-40.4

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

0.6÷0.05=12

Fraction Examples

Numerator 0.3 fp

6/13+(1268/13-735/62)=5341/62

Numerator 1.3 fp

127/9+89/9=24/1

Numerator 2.3 fp

3/7+31/581+8094/83=98/1

Numerator 3.3 fp

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

Denominator 0.2 fn

111/22+17/14=482/77

Denominator 1.2 fn

-103/30+137/15=57/10

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

-1/12+(-1/3-379/66)=-271/44

1/2÷1/5÷9/2=5/9

119/11÷1547/33=3/13

175/4×28/25=49/1

3/2×1/3÷3/20=10/3

3/5÷3/17×470/17=94/1

5/2×(3/5×2/3)=1/1

(464/25÷116/5)×25/28=5/7

Reduction 1.3 fp

57920/880=724/11

Limited 0.1 fp

35/4×2/5-17/8=11/8

Limited 1.2 fp

336/17×153/56-133/3=29/3

(11/5-7/5)×25/4=5/1

2/9×(-1/2-1/4)=-1/6

15/2÷60/7+61/8=17/2

1037/35+3/4×308/15=1576/35

Complete 2.1 fn

-14/3×(-4/5-6/5)=28/3

Comparisons

Ceil 0.4 in

-910000 < 380600

Ceil 1.4 in

855509 > 511530

Ceil 2.4 in

876219-121902 > -260768-593141

Ceil 3.4 in

-267784÷2 > 897594÷(-2)

Point 0.3 dp

61.622-31.622 > 3.919+4.048

Point 0.4 dp

640.109-206.11 < 168.451+489.456

Point 2.4 dp

4.467+37.136 < 126.849+127.583

Point 3.3 dp

41.94÷3.495 < 62.5×0.64

Point 3.4 dp

3.2×24.5 > 19.2×0.8

Doted 0.3 dn

5.32×(-15) < 64.064÷16

Doted 1.3 dn

11.471 > -11.454

Doted 1.4 dn

358.696 < 358.713

Doted 2.3 dn

-15.399-17.51 > 10-89.552

Doted 2.4 dn

-111.085-450.361 < -871.599+548.167

Doted 3.3 dn

-12.75×(-7.84) > 84.424÷(-1.384)

Improper 0.3 fp

1/3×20752/277 > 1022/19×19/42

Improper 3.3 fp

848/31×17/530 > 85/4÷425/14

-8/9 < 3/4

-5/2+2/1 < 11/2-19/9

-13777/249 < -61/415

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

Descent 3.1 fn

-1/10÷(-1/8) > -2/5÷(-4/7)

Descent 3.2 fn

-27/5×(-5/54) < -1/2÷(-1/2)

Equations

-56-x=86

-99×x-990=0

-768÷(x+873)=-256

y-x=1

Rounding

Rounding 0.3 dp

98.547≈98.55

Rounding 3.3 dp

92×0.5≈46

Language Exercises

Russian Vocabulary 1.5

нар спев

Russian Vocabulary 3.4

об яние

English Vocabulary 1.4

irr tated

English Vocabulary 2.4

re sonable

Lexicon 1.4

caref l [anxious]

Infinitive 2.2

outshoot [outshoot]

14+

Recommended for adolescents from the age of fourteen

Integer Examples

Intellect 0.3 in

(10000-4900)÷(144+60)=25

Intellect 1.3 in

-2772÷18-5199=-5353

Intellect 2.3 in

-1800-81×20-1980=-5400

Intellect 3.3 in

(8372+1628)÷(-18-7)=-400

-15×(-60)÷50=18

-52×99=-5148

-1680÷2÷(-6)=140

-528÷(16×(-3))=11

-5280÷5÷(22×(-2))=24

Decimal Examples

Residual 1.3 dp

48÷2=24

Denary 0.4 dp

5.28÷(0.48×6.25)=1.76

23×0.002=0.046

1.52÷0.76=2

0.52÷1.04=0.5

8.96×25×0.05=11.2

(6.25×48)÷19.2=15.625

Definition 0.3 dp

(69.775-68.345)×(5.364+6.536)=17.017

Definition 0.4 dp

5.28÷20.625+161.28÷184.32=1.131

Definition 1.4 dp

0.66÷0.825+891.392=892.192

Definition 2.4 dp

936.92+2.7÷2.4-400=538.045

Definition 3.3 dp

20.168+(1.552+2.768)×1.35=26

Definition 3.4 dp

(2.157+2.843)×(39.029+39.004)=390.165

Negatory 0.3 dn

-0.78×54+58.046=15.926

Negatory 0.4 dn

-1.14÷(-0.586-5.414)÷0.01=19

Negatory 1.4 dn

-713.784+656.64÷0.512=568.716

Negatory 2.4 dn

9.375×0.096-20÷12.5=-0.7

Negatory 3.3 dn

22.011-(21-11.1)÷6.6=20.511

Negatory 3.4 dn

241.665+(741.002-738.752)×16=277.665

Residual_ENG 1.3 dp

43÷25=1.72

Fraction Examples

Denominator 0.3 fn

329/927+208/927=179/309

Denominator 2.3 fn

61057/630-1073/108-12913/756=699/10

Denominator 3.3 fn

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

Fragment 0.3 fp

75/2÷1/2=75/1

Fragment 3.3 fp

(1624/57÷1218/19)÷4/81=9/1

Limited 0.2 fp

2/3×309/8-701/28=5/7

Limited 1.3 fp

6047/212+9/26÷954/533=1522/53

Limited 2.2 fp

1302/71×(721/15-479/10)=217/71

Complete 0.2 fn

-29/80-18/19÷2/95=-3629/80

Complete 1.3 fn

-6450/617+274/9×216/137=23166/617

Complete 2.2 fn

784/29÷(-19/2-79/2)=-16/29

Comparisons

Doted 0.4 dn

2 < 721.033

Doted 3.4 dn

589.842÷32.769 = -916.344÷(-50.908)

Descent 0.3 fn

-65/12-197/48 < -23785/672+10215/224

Descent 2.3 fn

-3339/256-20141/256 < -1/4-123/320

Descent 3.3 fn

17/24×(-1432/15) < -15/26×10/9

Equations

x²-3x-18=0

4x²=256

10x²+80x=0

3x²-3x-6=0

13x÷y=13

y+x=199

18x÷3y=27

6y-2x=40

-x+y=20

y+x=-1

-2y×19x=304

-10y+4x=-60

Language Exercises

Russian Vocabulary 2.5

наскво ь

English Vocabulary 1.5

enthu iastic

English Vocabulary 2.5

a knowledge

English Vocabulary 3.4

congres

Lexicon 1.5

enthu iastic [ebullient]

Lexicon 2.4

wo nded [injured]

Infinitive 1.3

draw drew [draw]

Infinitive 3.2

unhung [unhang]

15+

Recommended for adolescents from the age of fifteen

Integer Examples

10×21600÷320=675

243×426=103518

-10000÷(-20)÷10=50

1080÷(-180÷60)=-360

-932400÷(-225÷(-15))÷(-210)=296

Fraction Examples

Limited 0.3 fp

263/15+11/13×52/55=55/3

Limited 2.3 fp

(289/4-4877/68)×306/175=162/175

Complete 0.3 fn

-3117/298-15/149×217/30=-1667/149

Complete 2.3 fn

28/5×(52/5+117/20)=91/1

Equations

90x²=0

16x²=40000

12x²+1200x=0

x²-16x-80=0

74y-31x=1716

x-y=47

69x÷23y=2

62y+48x=7700

1800x÷12y=-24

-y+x=-11

4y×x=20000

8y+12x=1640

Language Exercises

Russian Vocabulary 3.5

н верх

English Vocabulary 3.5

continuo sly

Lexicon 2.5

c mmitment [obligation]

Infinitive 2.3

beset [beset]

16+

Recommended for adolescents from the age of fifteen

Equations

61x²=8171316

670x²=4288000

-912x²+740544x=0

18x²-558x-1188=0

x+y=800

840x÷294y=4

150x+131y=145362

108y-930x=183060

-y-x=704

96y÷16x=1689

239y-9x=-98470

Language Exercises

Infinitive 3.3

outbid [outbid]

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