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+3=4

Beginner 2.1 ip

7-6=1

Beginner 3.1 ip

7-1=6

Step-by-step Tasks

1+2=3

1+1=2

2+5=7

1+3=4

9+1=10

5-2=3

4-1=3

7-1=6

9-1=8

5-2=3

3-3=0

Recommended for children from six years

Integer Examples

14+6=20

12-1=11

7+11=18

10-1-2=7

Step-by-step Tasks

5+2=7

6+3=9

8+2=10

4+4=8

4+6=10

5+7=12

0+4=4

2+6=8

6+6=12

2+7=9

9+1=10

3+3=6

6+8=14

6+9=15

9-0=9

6+10=16

7+10=17

7-4=3

6-5=1

10-3=7

13-2=11

10-1=9

16-6=10

14-7=7

10-5=5

9-8=1

8-8=0

18-9=9

15-10=5

19-10=9

Recommended for children from seven years

Integer Examples

8-(1+6)=1

1+94=95

46-36=10

48-4=44

20-3-14=3

4+(5-5)=4

Step-by-step Tasks

13+5=18

0+0=0

3+13=16

14+2=16

22+3=25

14+4=18

10+15=25

12+17=29

5+25=30

14+16=30

7+0=7

15-8=7

18-1=17

18-12=6

19-13=6

17-4=13

8-5=3

19-16=3

27-7=20

20-20=0

1×6=6

9×2=18

0×1=0

3÷1=3

Comparisons

Natural 1.1 ip

4 < 8

Natural 2.1 ip

1+5 < 9-0

Language Exercises

Russian Vocabulary 1.1

ла ть

Recommended for children from eight years

Integer Examples

16+(2+2)=20

98+92=190

775-5=770

20+703=723

38+62-13=87

19+(13-12)=20

38×2=76

91÷7=13

18÷6=3

45+27=72

79-31=48

88-71=17

Step-by-step Tasks

24+6=30

28+2=30

18+0=18

8+9=17

40+50=90

4+16=20

7+2+1=10

9-8=1

20-17=3

12-9=3

19-7=12

37-17=20

100-70=30

6×3=18

10×2=20

6×4=24

10×1=10

10×5=50

3×3=9

10×5=50

6×0=0

9×6=54

7×9=63

6×5=30

8×5=40

10×8=80

8×10=80

10×9=90

2×9=18

5×2=10

9×10=90

12÷2=6

7÷1=7

3÷3=1

8÷2=4

12÷4=3

9÷1=9

45÷5=9

18÷2=9

10÷1=10

24÷6=4

30÷5=6

14÷7=2

70÷7=10

10÷2=5

72÷8=9

24÷8=3

81÷9=9

72÷8=9

80÷2=40

80÷10=8

Comparisons

4×1 < 2×5

67 > 30

1+0 < 44+30

8÷2 < 7÷1

Equations

Linear 1.1 ip

2+x=4

Linear 2.1 ip

3÷x=1

Language Exercises

Russian Vocabulary 1.2

отеч ство

Russian Vocabulary 2.1

п лёт

Russian Vocabulary 3.1

л песток

English Vocabulary 1.1

n se

English Vocabulary 2.1

r ver

Lexicon 1.1

z ro [naught]

Lexicon 2.1

hop [store]

Recommended for children from nine years

Integer Examples

12+(50+36)=98

781-388-341=52

76-(4+40)=32

8÷2=4

28×14=392

618÷6=103

939÷3=313

18÷3÷2=3

90÷(18÷2)=10

6×(2×9)÷3=36

47÷5=9(2)

5899+1801=7700

5356-4837=519

4841+594=5435

30×3=90

90÷5=18

46+2×11=68

42-40÷20+36=76

64÷4=16

27÷3=9

Step-by-step Tasks

2×21=42

2×11=22

3×17=51

2×15=30

12×4=48

20×5=100

4×9=36

12×2=24

20×1=20

6×15=90

13×7=91

9×10=90

8×11=88

18×3=54

20×9=180

19×9=171

20×8=160

20×8=160

7×8=56

34÷2=17

55÷11=5

54÷3=18

48÷3=16

56÷4=14

75÷5=15

40÷2=20

48÷4=12

0÷20=0

18÷6=3

126÷7=18

66÷6=11

32÷8=4

15÷5=3

108÷9=12

32÷8=4

260÷20=13

27÷3=9

40÷5=8

Comparisons

70 > 55

403 > 234

800-401 < 190+410

12×7 < 2×43

Equations

Linear 1.2 ip

94-x=14

Linear 2.2 ip

x÷2=6

Linear 3.1 ip

x÷5-2=0

Language Exercises

Russian Vocabulary 1.3

авт мобиль

Russian Vocabulary 2.2

оранж вый

Russian Vocabulary 3.2

азар

English Vocabulary 3.1

a ay

10+

Recommended for children from ten years

Integer Examples

975-21-84=870

82493+27507=110000

993679-793679=200000

949282-152711=796571

93+(937-95)=935

900÷3÷25=12

9×32=288

150÷15=10

4200÷2=2100

40÷4×9=90

(120÷2)÷3=20

4×5×(50÷2)=500

151÷12=12(7)

448033+237992=686025

153068-120068=33000

731324+78676=810000

1625×8=13000

1379×70=96530

160÷8=20

(62-38)÷(62-56)=4

120×6-427=293

724÷2-40÷20=360

(9+8)÷(10+7)=1

785÷5=157

90÷6=15

Comparisons

Natural 0.3 ip

920÷10 < 12×8

Natural 1.4 ip

391473 < 539839

Natural 2.4 ip

900508-5407 > 439545-227813

Natural 3.3 ip

536÷67 = 4×2

Equations

(x+2)×3=9

917-x=137

897÷x=299

2×x-43=37

(x+3)×2=10

Rounding

Round 1.1 ip

256≈26

Round 1.2 ip

9178≈92

Round 2.1 ip

112+61≈17

Language Exercises

Russian Vocabulary 2.3

с рень

English Vocabulary 1.2

s ear

English Vocabulary 2.2

cl ud

Lexicon 1.2

pi k [rose-color]

Lexicon 2.2

m nth [moon]

Infinitive 1.1

freeze frozen [freeze]

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

300000+(902913-209889)=993024

Conversant 1.1 in

7-7=0

Conversant 1.5 in

-176346+366346=190000

5+9-4=10

26×10×(32÷2)=4160

210÷14÷15=1

31×(60×2)=3720

126÷(9÷3)×37=1554

436÷67=6(34)

24540×109=2674860

7964÷44=181

(100-27)×(20-9)=803

9600+3200÷200×25=10000

Numeracy 1.3 ip

6000+80×175=20000

Numeracy 2.3 ip

584×95-1280÷128=55470

Numeracy 3.2 ip

276+(45-44)×37=313

Numeracy 3.3 ip

7498+150÷(4143-4068)=7500

Divisor_ENG 1.3 ip

3565÷31=115

Remainder_ENG 1.3 ip

263÷27=9(20)

Decimal Examples

0.5+2+4=6.5

44.5-2=42.5

8.4-0.4=8

23.4+21.6=45

2-1.7+8=8.3

58.2-1.7+34=90.5

4.6-(1.4+0.6)=2.6

27.3-(47.1-46)=26.2

46.2÷2=23.1

1.9×5=9.5

7.6÷1.9=4

2×8.9=17.8

Divisional_ENG 1.1 dp

12.8÷8=1.6

Fraction Examples

Numerator 1.1 fp

8/9-1/3=5/9

Comparisons

Natural 0.4 ip

916868 < 966303

Natural 3.4 ip

512000÷256 < 906696÷28

5+5 > 8-10

-7 > -8

7-10 < -2-0

8÷4 > -10÷(-10)

20.7 < 34.8

98.1-22.4 < 84.4-5.9

1/5 < 3/4

445/68 < 7/1

1/4+1/4 > 5/9-2/9

Equations

100÷(73-x)=4

900÷x+215=245

459÷x+539=590

4×(x+14)=100

(x-67)×39=897

-1-x=6

x÷3=3

Rounding

28.9≈29

73.2-9.5≈64

986-19≈97

9379-1047≈83

959576÷472≈2

173856≈174

5800-2094≈37

965026-242853≈722

3×295≈89

3835÷5≈8

153290×5≈766

Language Exercises

Russian Vocabulary 1.4

орг низм

Russian Vocabulary 3.3

п рила

English Vocabulary 1.3

r bbish

English Vocabulary 2.3

bon

English Vocabulary 3.2

uni ue

Lexicon 1.3

tr ding [commerce]

Infinitive 2.1

backslide [backslide]

12+

Recommended for children from the age of twelve

Integer Examples

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

-13+(20-10)=-3

-48-(-43-79)=74

-6-6=-12

58-68=-10

17+16-13=20

-18+29-37=-26

3+(-8+10)=5

19+(-5+6)=20

-14+(-13+7)=-20

-(0+0)+(4-3)=1

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

(30+25)+(16+28)=99

4×2×3125=25000

234×850=198900

689850÷7=98550

889320÷2=444660

1000÷4÷25=10

5600÷(224÷8)=200

200÷(2×5)×10=200

43000×1131=48633000

71766÷81=886

-33+6÷2=-30

25÷5+6=11

-9-7×3-43=-73

(100-10)÷(13-4)=10

-64÷(2×(-2))÷(-4)=-4

57÷(-3)=-19

48÷4÷(-3)=-4

(-80÷(-2))÷(-4)=-10

-64÷(-4×2)÷(-4)=-2

57000÷95=600

Decimal Examples

Partitive 0.3 dp

64.5+15.95=80.45

Partitive 1.3 dp

42.9+50=92.9

Partitive 2.3 dp

12.65+34.4+40.93=87.98

30+(3.3+52.04)=85.34

-9.8+0+2=-7.8

-18+5.6+82.2=69.8

-1.2-5.1=-6.3

-87.1-7=-94.1

0.6-4.8+5.1=0.9

0.3-88.7+77.4=-11

5.2-(8+1.7)=-4.5

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

95÷10=9.5

0.51÷3=0.17

0.5×5.2÷2=1.3

49.5×0.1=4.95

1.54÷0.56=2.75

2.88÷36=0.08

0.8÷8×74=7.4

(19×0.1)÷0.5=3.8

27.3+1.5÷(3.2+11.8)=27.4

Definition 1.1 dp

3.8×11-25.4=16.4

Definition 2.1 dp

51-0.5×5-40.5=8

Definition 3.1 dp

83×(20.5-19.8)÷41.5=1.4

Negatory 1.1 dn

2×5.6-10.5=0.7

Negatory 2.1 dn

-34÷8.5+0.6×30=14

Residual_ENG 1.1 dp

57÷3=19

Divisional_ENG 1.2 dp

12.32÷35.2=0.35

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

Numerator 1.2 fp

5/7+169/28=27/4

Numerator 2.1 fp

4/5-2/5-3/10=1/10

Numerator 2.2 fp

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

Numerator 3.1 fp

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

Numerator 3.2 fp

1/7+(4/21+397/51)=138/17

1/5-(-4/5+1/6)=5/6

1/3-1/6=1/6

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

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

38/9÷19/3=2/3

14/3×6/35=4/5

28/3×2/7×3/10=4/5

56/8=7/1

399/19=21/1

2/3×7/6+32/9=13/3

Comparisons

60÷10 < -10×(-2)

-37 > -920

65 > -16

268 > -563

60-2 > 82-90

860-7 > 134-553

2×6 > 84÷12

23×(-4) > -790÷2

13+55.3 > 45-1.4

40.02 < 48

79.15 > 74

44.273 < 99.665

613.151 > 449.867

43.7+20.3 > 8.43+54.76

Point 2.3 dp

4.1+74.517 > 6.283+11.717

14.5×6.8 > 27×0.5

2.6×2.4 < 80×0.69

0.8×(-37.5) = -90÷3

-66.38+4.06 < 48.74-8.78

27 > -32.8

76.46 < 97.17

35.1-5 < 15.9+46.8

14.2+4.2 > -82.7+47.7

Doted 3.1 dn

-1.6×(-12.5) > -6×4.4

Doted 3.2 dn

-5.36×(-2.75) < 73.5÷1.05

5/9×3/10 < 3/4÷9/10

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

190/261 < 256/297

2/29+19/87 < 3/4+187/36

Improper 2.3 fp

257/3-4543/303 > 22909/808-20613/808

Improper 3.1 fp

1/5÷1/2 < 2/3÷5/6

Improper 3.2 fp

7/3×151/84 < 1/2÷1/17

Descent 1.1 fn

-3/5 > -4/5

Descent 1.2 fn

161/60 < 239/35

Descent 2.1 fn

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

Equations

-x÷(-2)=-1

-x÷12-3=0

-1+x=49

53+x=-400

x×(-8)=-80

x×31=806

2×x-10=10

67-70÷x=62

-2×(x-7)=6

2×(71+x)=-30

Rounding

15.7+14.2≈30

61.68×1.4≈86.4

90.51≈90.5

0.771≈0.77

42.03-2.91≈39.1

73.476-43.479≈30

6.3×2.9≈18

89.1÷9.48≈9.4

Language Exercises

Russian Vocabulary 2.4

к нкурент

English Vocabulary 3.3

s bject

Lexicon 2.3

f shing [piscatorial]

Infinitive 1.2

stick stuck [stick]

Infinitive 3.1

unspin [unspin]

13+

Recommended for adolescents from the age of thirteen

Integer Examples

Conversant 0.4 in

-938+(643-435)=-730

Conversant 0.5 in

-270000-29000-1000=-300000

Conversant 1.4 in

-414+598=184

Conversant 2.4 in

497+571-180=888

Conversant 2.5 in

-877844-284951+810000=-352795

Conversant 3.4 in

-229-(346+83)=-658

Conversant 3.5 in

583000-(856644-390000)=116356

Conversant 4.4 in

-(86+70)-(14+130)=-300

Conversant 4.5 in

-(100000+90000)-(249388-209388)=-230000

6938712÷396=17522

361+10×21=571

655-4×403=-957

-86-6×2×2=-110

317-(7+23)×25=-433

608÷(-2)÷(-56÷(-28))=-152

-14÷7=-2

14×2×(-10)=-280

-2×(-33×(-10))=-660

-720÷(-36÷3)÷15=4

6106903÷473=12911

Decimal Examples

Partitive 0.4 dp

575.157-111.661+378.05=841.546

Partitive 1.4 dp

588.902-74.629=514.273

Partitive 2.4 dp

509.214-310.291+180.124=379.047

Partitive 3.4 dp

375.736-(36+16.85)=322.886

Split 0.3 dn

63.09+23.56=86.65

Split 0.4 dn

-261.085+(-244.625+975.71)=470

Split 1.3 dn

78.2+11.8=90

Split 1.4 dn

504.613+266.737=771.35

Split 2.3 dn

-73.8-66+93.62=-46.18

Split 2.4 dn

161.485+456.497-517.982=100

Split 3.3 dn

-65.81-(-51+81.44)=-96.25

Split 3.4 dn

-396.158-(388.251-24.409)=-760

99÷12=8.25

0.018÷2=0.009

3.75×0.04=0.15

1.375×0.64×12.5=11

1.25×2.4=3

2.64÷1.32=2

5.76÷1.152=5

66×1.25×0.08=6.6

35.64÷88÷1.35=0.3

0.24×(2.5×3.2)=1.92

3.78÷(0.224×93.75)=0.18

Definition 0.2 dp

89.87+20×0.38=97.47

Definition 1.2 dp

90.68-1.6×12.5=70.68

Definition 1.3 dp

61.675+0.768÷0.64=62.875

Definition 2.2 dp

60.27+4.32÷8.64×11.14=65.84

Definition 2.3 dp

87.502-37.62÷60-38.186=48.689

Definition 3.2 dp

83×(48-47.33)÷1.66=33.5

Negatory 0.1 dn

48×0.1+1.6÷16=4.9

Negatory 0.2 dn

54.96-2.7÷10×30=46.86

Negatory 1.2 dn

-41.86÷1.82+25.47=2.47

Negatory 1.3 dn

-84.456÷93.84+62.813=61.913

Negatory 2.2 dn

82.2-0.65×0.2+7.99=90.06

Negatory 2.3 dn

8.779+9.828÷27+77.51=86.653

Negatory 3.1 dn

4÷(95.1-95.6)×0.3=-2.4

Negatory 3.2 dn

4.62-(79.8-94.8)×0.32=9.42

Residual_ENG 1.2 dp

11÷20=0.55

Divisional_ENG 1.3 dp

3.96÷5=0.792

Fraction Examples

Numerator 0.3 fp

189/5-1162/65=259/13

Numerator 1.3 fp

44258/575-43918/575=68/115

Numerator 2.3 fp

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

Numerator 3.3 fp

2309/77-(6194/77-797/11)=22/1

Denominator 0.2 fn

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

Denominator 1.2 fn

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

Denominator 1.3 fn

-134/19-22200/247=-23942/247

Denominator 2.2 fn

-3/2-3/2-47/9=-74/9

Denominator 3.2 fn

-98/25-(2/5-63/10)=99/50

1/2÷3/4×9/7=6/7

1/10×20/3÷4/3=1/2

1/3×3/5=1/5

2/3×69/5÷92/5=1/2

1/2×52/29×3/26=3/29

1/7÷(2/5×5/2)=1/7

(35/4÷7/5)÷25/3=3/4

286/1027=22/79

(3/5+7/5)÷8/3=3/4

51/2÷85/6+443/40=103/8

Limited 2.1 fp

(1/3+1/3)×1/2=1/3

Complete 0.1 fn

-1/6×21/4-15/8=-11/4

Complete 1.1 fn

-19/2÷10/9+83/10=-1/4

Complete 1.2 fn

76/7-10/11×555/14=-277/11

Complete 2.1 fn

-13/3÷(-2/5-1/10)=26/3

Comparisons

Ceil 0.4 in

-910000 < 380600

Ceil 1.4 in

-815196 < 17890

Ceil 2.4 in

150146+91754 > 467574-711419

Ceil 3.4 in

-5×(-96) < 848000÷4

Point 0.3 dp

80.032 > 9.426

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

41.94÷3.495 < 62.5×0.64

Point 3.4 dp

399.762÷7.403 < 306.45÷3

88.103 > -88.098

-46.331 < 52

546.477 < 635.778

70.664-35.885 > 1.631+33.128

Doted 2.4 dn

-48.534-207.959 < -140.37-116.115

Doted 3.3 dn

64.548÷1.793 > 77.58÷3.879

Improper 0.3 fp

13194/163+3424/489 > 11692/133-102/133

Improper 3.3 fp

197/409×58/197 < 1/2÷2/121

Descent 0.1 fn

-1/6÷(-3/4) > 1/3÷(-2/5)

Descent 0.2 fn

9/1×35/54 > 8/1÷(-12/7)

Descent 1.3 fn

-86480/869 < 3796/209

Descent 2.2 fn

5/1-284/65 > -1/3-1/15

Descent 3.1 fn

-1/3÷5/9 < 1/2×(-3/5)

Descent 3.2 fn

-27/5×(-5/54) < -1/2÷(-1/2)

Equations

-5-x×30=-815

600÷x-25=-65

(957-x)×266=-798

x-y=2

Rounding

Rounding 0.3 dp

89.911-10.411≈79.5

Rounding 3.3 dp

100×0.8≈80

Language Exercises

Russian Vocabulary 1.5

дъюнкт

Russian Vocabulary 3.4

иллюм нация

English Vocabulary 1.4

ori inally

English Vocabulary 2.4

alc hol

Lexicon 1.4

h ndredth [centesimal]

Infinitive 2.2

shoot [shoot]

14+

Recommended for adolescents from the age of fourteen

Integer Examples

Intellect 0.3 in

-1687-30×91=-4417

Intellect 1.3 in

7765+96×742=78997

Intellect 2.3 in

-9273-1112×80÷40=-11497

Intellect 3.3 in

(1100+8980)÷(6142-5806)=30

-3520÷8=-440

-83×80=-6640

62×(-4)×(-40)=9920

(4×400)÷(-100)=-16

4×(-46÷(-2))×(-42)=-3864

Decimal Examples

Residual 1.3 dp

55÷5=11

Denary 0.4 dp

5.28÷(0.48×6.25)=1.76

2.75×0.004=0.011

529.2÷282.24=1.875

8×0.001=0.008

1.28×250×0.125=40

1.056÷(1.28×6.6)=0.125

Definition 0.3 dp

3.521×10+41.58÷2=56

Definition 0.4 dp

415.368+90.288÷16+233.677=654.688

Definition 1.4 dp

472.262-2.926÷4.18=471.562

Definition 2.4 dp

302.4÷168+13.328÷7=3.704

Definition 3.3 dp

29.08-(28.195-25.995)÷27.5=29

Definition 3.4 dp

30×(4.894+5.312)×1.6=489.888

Negatory 0.3 dn

-87.084+16.416÷72÷5.7=-87.044

Negatory 0.4 dn

-1.14÷(-0.586-5.414)÷0.01=19

Negatory 1.4 dn

2.7×17.55-15.385=32

Negatory 2.4 dn

538.683+200×0.288×6.25=898.683

Negatory 3.3 dn

31.665+72.8÷(28.971-32.299)=9.79

Negatory 3.4 dn

-1.25÷(620.233-622.733)×50=25

Residual_ENG 1.3 dp

24÷4=6

Fraction Examples

Denominator 0.3 fn

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

Denominator 2.3 fn

-2041/38-1315/38+6/19=-88/1

Denominator 3.3 fn

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

Fragment 0.3 fp

3/4÷3/10÷5/94=47/1

Fragment 3.3 fp

13/58÷(19/2×1/19)=13/29

Limited 0.2 fp

21/4÷3/32-360/43=2048/43

Limited 1.3 fp

1/2×35/2+313/4=87/1

Limited 2.2 fp

(1/5+3/10)÷13/20=10/13

Complete 0.2 fn

1/2×26/3+103/3=116/3

Complete 1.3 fn

-11/19×57/143-7/26=-1/2

Complete 2.2 fn

559/30÷(11/17-742/17)=-13/30

Comparisons

Doted 0.4 dn

-330 > -800

Doted 3.4 dn

-179.667÷(-9) < -18.75×(-1.408)

Descent 0.3 fn

-1110/47÷(-3774/109) < -75/1×(-1063/825)

Descent 2.3 fn

-1/3-6299/66 < -181/10+488/5

Descent 3.3 fn

-125/234÷325/372 < 8/1×55/624

Equations

4x²=64

5x²=80

4x²-8x=0

-x²+12x-11=0

8x-4y=16

y+x=118

4x÷4y=1

6y-2x=40

y+3x=-24

y-x=-10

-6y÷9x=1

-1x-y=19

Language Exercises

Russian Vocabulary 2.5

толл

English Vocabulary 1.5

a knowledge

English Vocabulary 2.5

comm nication

English Vocabulary 3.4

or ginal

Lexicon 1.5

bl me [condemn]

Lexicon 2.4

mathem tics [maths]

Infinitive 1.3

test-fly testflown [test-fly]

Infinitive 3.2

unhang [unhang]

15+

Recommended for adolescents from the age of fifteen

Integer Examples

Logics 0.4 in

-600×20=-12000

Logics 1.4 in

500×(-4)=-2000

Logics 2.4 in

-34×(-152)×(-111)=-573648

Logics 3.4 in

-22800÷(-240÷12)=1140

Logics 4.4 in

-359040÷(-17)÷(-46800÷3900)=-1760

Fraction Examples

Limited 0.3 fp

(115/137-61/137)×313/9=1878/137

Limited 2.3 fp

353/846×(1146/17+452/17)=353/9

Complete 0.3 fn

-3117/298-15/149×217/30=-1667/149

Complete 2.3 fn

-20/21×(49/80+11/80)=-5/7

Equations

7x²=15463

10x²=98010

50x²+1500x=0

-x²-76x-960=0

2x+56y=5174

x-y=47

2x×5y=100000

60x-20y=60

7x-2y=-234

-x-y=-26

7x×3y=75978

-5x+51y=4583

Language Exercises

Russian Vocabulary 3.5

д ожжи

English Vocabulary 3.5

c pacity

Lexicon 2.5

anniv rsary [annual]

Infinitive 2.3

thrust [thrust]

16+

Recommended for adolescents from the age of fifteen

Equations

x²+17x-390=0

231x²=1006236

950x²-148200x=0

3x²+288x+6045=0

4y×x=130680

14x÷3y=616

150x+131y=145362

18480y÷88x=525

-y+x=590

-2x×34y=707472

-32y-4x=27116

Language Exercises

Infinitive 3.3

run [run]

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