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+4=9

Beginner 2.1 ip

5-1=4

Beginner 3.1 ip

10-6=4

Step-by-step Tasks

1+1=2

4+1=5

5+2=7

1+3=4

7+1=8

4-2=2

3-1=2

7-1=6

4-1=3

6-2=4

6-3=3

Recommended for children from six years

Integer Examples

1+8=9

11-5=6

9+6=15

10-3-4=3

Step-by-step Tasks

8+2=10

6+3=9

1+0=1

4+4=8

7-5=2

5+4=9

6+2=8

6+1=7

3+9=12

4+7=11

8+7=15

7+1=8

6+8=14

5+9=14

6-2=4

6+10=16

5+8=13

10-4=6

6-5=1

10-1=9

14-2=12

14-3=11

13-6=7

16-7=9

17-2=15

16-8=8

11-8=3

19-9=10

0-0=0

14-10=4

Recommended for children from seven years

Integer Examples

1+4=5

30+57=87

62-30=32

58-35=23

19-19+0=0

10-(3+6)=1

Step-by-step Tasks

13+5=18

3+2=5

11-10=1

12+5=17

13+23=36

0+14=14

5+5=10

16-15=1

5+25=30

13+26=39

7+9=16

9-6=3

5-1=4

18-12=6

11-3=8

19-14=5

6-5=1

17-6=11

11-7=4

16-6=10

1×2=2

2×4=8

1×1=1

10÷1=10

Comparisons

Natural 1.1 ip

8 > 7

Natural 2.1 ip

4+0 < 5-0

Language Exercises

Russian Vocabulary 1.1

учебн к

Recommended for children from eight years

Integer Examples

12-9=3

892+54=946

914-674=240

32+218=250

96-6-20=70

20-(6+10)=4

0×3=0

0÷4=0

9×3=27

45+27=72

98-16=82

97-45=52

Step-by-step Tasks

2+8=10

32-3=29

18+0=18

4+9=13

40+50=90

39+11=50

7+2+1=10

27-8=19

23-13=10

26-9=17

14-6=8

37-17=20

60-30=30

3×9=27

1×6=6

6×4=24

4×7=28

10×5=50

10×5=50

2×10=20

6×0=0

4×1=4

7×7=49

1×6=6

5×2=10

9×8=72

6×2=12

9×3=27

3×9=27

5×8=40

3×10=30

12÷2=6

16÷2=8

6÷3=2

16÷2=8

40÷4=10

4÷4=1

25÷5=5

0÷4=0

20÷4=5

0÷6=0

30÷5=6

35÷7=5

0÷4=0

20÷4=5

80÷8=10

0÷3=0

36÷9=4

80÷8=10

30÷3=10

80÷10=8

Comparisons

10÷10 < 6÷1

96 > 92

61-11 > 23+12

10÷10 < 7×1

Equations

Linear 1.1 ip

2+x=4

Linear 2.1 ip

4÷x=2

Language Exercises

Russian Vocabulary 1.2

астр навт

Russian Vocabulary 2.1

б тон

Russian Vocabulary 3.1

учит льница

English Vocabulary 1.1

r d

English Vocabulary 2.1

n ar

Lexicon 1.1

s ut [close]

Lexicon 2.1

h ng [weigh]

Recommended for children from nine years

Integer Examples

100-35=65

877+123-0=1000

76-(70-43)=49

8÷2=4

3×26=78

511÷7=73

810÷3=270

20÷5×3=12

(40÷4)×10=100

8÷2×(4÷2)=8

27÷7=3(6)

1600+5400=7000

4576-1776=2800

2908+7092=10000

31×7=217

30÷6=5

3×7+69=90

24÷8+10×5=53

98÷7=14

45÷5=9

Step-by-step Tasks

2×17=34

8×11=88

14×3=42

2×15=30

16×4=64

20×5=100

12×3=36

2×31=62

4×25=100

11×6=66

7×14=98

1×15=15

8×16=128

39×2=78

12×9=108

19×9=171

6×20=120

20×19=380

2×15=30

16÷2=8

55÷11=5

24÷3=8

48÷3=16

80÷4=20

45÷5=9

40÷2=20

32÷2=16

20÷10=2

42÷6=7

126÷7=18

91÷7=13

72÷8=9

125÷5=25

45÷9=5

60÷6=10

490÷10=49

108÷9=12

55÷11=5

Comparisons

11×4 > 4×2

491 > 466

72+174 < 680-264

12×6 > 54÷3

Equations

Linear 1.2 ip

96-x=13

Linear 2.2 ip

x÷8=1

Linear 3.1 ip

8-x×3=2

Language Exercises

Russian Vocabulary 1.3

авт мобиль

Russian Vocabulary 2.2

ртист

Russian Vocabulary 3.2

б лет

English Vocabulary 3.1

fa m

10+

Recommended for children from ten years

Integer Examples

254+623=877

56900+28668=85568

691254-681381=9873

144524+46154=190678

343+(116+200)=659

28÷2×27=378

54×52=2808

2400÷80=30

21×30=630

35×2×10=700

4×(8×5)=160

2×(10÷5)×100=400

108÷18=6

281269+628731=910000

949800-642000=307800

300000+489539=789539

8264×3=24792

3350×60=201000

993÷3=331

54÷6+68÷4=26

840÷15+312=368

734-44÷22×289=156

46+36÷(4-2)=64

395÷5=79

124÷18=6(16)

Comparisons

Natural 0.3 ip

506+469 > 107+148

Natural 1.4 ip

490089 > 250340

Natural 2.4 ip

556069-472685 < 282987+529037

Natural 3.3 ip

594÷27 < 776÷4

Equations

(x+2)×3=9

410-x=100

2×x=720

92-46÷x=90

(x-1)×5=0

Rounding

Round 1.1 ip

802≈80

Round 1.2 ip

553≈6

Round 2.1 ip

112+61≈17

Language Exercises

Russian Vocabulary 2.3

сост заться

English Vocabulary 1.2

th rty

English Vocabulary 2.2

mu t

Lexicon 1.2

soft y [gently]

Lexicon 2.2

m in [chief]

Infinitive 1.1

undersell undersold [undersell]

11+

Recommended for children from the age of eleven

Integer Examples

Beginner 0.5 ip

10000+(495252+24826)=530078

Beginner 4.5 ip

162366+277869+128409=568644

Beginner 5.5 ip

479830-(650000-640891)=470721

Conversant 1.1 in

-10+7=-3

Conversant 1.5 in

-770000+924199=154199

5+9-4=10

40×21×2=1680

55×3×5=825

(450÷5)÷2=45

4×3×(23×11)=3036

516÷70=7(26)

2000×309=618000

816÷24=34

400÷10+21×10=250

7610-1020÷102=7600

290×16-3379=1261

3659-34×20+1204=4183

319-171÷(550-379)=318

Numeracy 3.3 ip

(8915-4055)÷(84+78)=30

Divisor_ENG 1.3 ip

1681÷41=41

Remainder_ENG 1.3 ip

251÷28=8(27)

Decimal Examples

1+(8-5)=4

86.2-25.4=60.8

1.6+8.4=10

63.9-37.9=26

1.5+2.1+0.6=4.2

17.4+2+58.6=78

4.2-(8.9-6)=1.3

57-(33.5+3.5)=20

27.6÷1.5=18.4

2×3.3=6.6

36÷0.6=60

20.4÷3.4=6

Divisional_ENG 1.1 dp

23.4÷0.4=58.5

Fraction Examples

Numerator 1.1 fp

1/8+1/8=1/4

Comparisons

Natural 0.4 ip

703962-603037 > 746779-645871

2×8 < 8800×32

3+3 > -7+3

-3 > -10

7-10 < -2-0

6÷2 < -2×(-4)

11.6 < 65.2

12.8+7.6 < 81.5-54.2

1/10 < 2/3

97/11 > 7/4

3/5-2/5 < 1/4+1/4

Equations

(x-70)×8=80

942-38×x=258

180-720÷x=0

68÷(14+x)=2

52×(x+9)=936

-10-x=-4

-x×5=-10

Rounding

68.5≈69

9.3+71.7≈81

529≈53

4×2234≈89

263×2351≈618

822773≈823

10000-7284≈27

200960+81480≈282

820÷4≈21

3835÷5≈8

71678×13≈932

Language Exercises

Russian Vocabulary 1.4

сан торий

Russian Vocabulary 3.3

нварский

English Vocabulary 1.3

pr per

English Vocabulary 2.3

cen ral

English Vocabulary 3.2

wir

Lexicon 1.3

min ral [inorganic]

Infinitive 2.1

bring [bring]

12+

Recommended for children from the age of twelve

Integer Examples

2-9=-7

-18+3=-15

-50+23=-27

1+9=10

74-74=0

-11+19-19=-11

-10-60+39=-31

-4+(-3-3)=-10

-10-(17-11)=-16

33+(-37+1)=-3

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

(0-18)+(20+16)=18

(72-90)-(44+28)=-90

470600÷50=9412

965×76=73340

340000÷200=1700

551×200=110200

74256÷272×717=195741

(160×2000)÷5=64000

200×38÷(190×4)=10

7734×7000=54138000

7500÷25=300

-12÷2-75÷3=-31

23+3×19=80

57÷3+2×10=39

-18-92÷(43-41)=-64

2×25÷(10÷2)=10

8×(-8)=-64

-9×(-2)×2=36

(-80÷2)÷(-4)=10

-2×(48÷(-6))÷8=2

82521÷53=1557

Decimal Examples

Partitive 0.3 dp

18.26+(63.2-7.85)=73.61

Partitive 1.3 dp

81.69-52.51=29.18

Partitive 2.3 dp

75-48-27=0

Partitive 3.3 dp

67.75-(59.93-14.71)=22.53

-2.8-5+7.1=-0.7

-18+5.6+82.2=69.8

-4+2.6=-1.4

5.9+73.4=79.3

-4+2.1-2.4=-4.3

-98.1+66.3-48.6=-80.4

Split 3.1 dn

0.8+(1-9.7)=-7.9

Split 3.2 dn

-17.4-(0.6-30.2)=12.2

48÷6=8

6.4÷32=0.2

8.7÷1.5=5.8

2.2×1.05=2.31

8.4÷7.5=1.12

2.88÷36=0.08

0.8÷0.5×2.5=4

(10÷0.8)÷2.5=5

0.5×(100-98)×1.6=1.6

1.2-0.5×0.4=1

20.8+1.8÷9×4=21.6

12-6.8÷(85.7-77.2)=11.2

Negatory 1.1 dn

-8.5×5-45.5=-88

Negatory 2.1 dn

0.5×12-1.7÷3.4=5.5

Residual_ENG 1.1 dp

11÷5=2.2

Divisional_ENG 1.2 dp

0.74÷0.2=3.7

Fraction Examples

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

55/6+5/6=10/1

13/33+379/99=38/9

4/5-1/5-1/5=2/5

43/9+5/9+2/3=6/1

3/5+(2/5-1/4)=3/4

1/2+(65/46+2/23)=2/1

5/6-1/6=2/3

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

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

1/3+(1/6+1/2)=1/1

1/3÷2/5=5/6

41/3÷82/3=1/2

1/3×3/2×25/3=25/6

4/16=1/4

3231/129=1077/43

49/9+1/2÷9/4=17/3

Comparisons

-38×2 < 16÷(-2)

-410-222 < -128-3

59 = 59

678 > -681

91-2 > -9-5

-726+210 < 848-597

-40÷(-20) < -90÷(-3)

-25×4 < 990÷9

4+68.6 < 84.9-12.1

31.69+5.5 > 63-25.82

1.3 > 1.28

45.147 > 39.876

533.338 > 450.065

26.9+67.33 > 54.33-4.18

Point 2.3 dp

0.51+0.184 < 59.778+26.413

83.1÷27.7 < 1.6×28.5

42.3÷5 < 16.56×0.75

-93.7 < 35.1

58.53-7.3 > -81.46+100

-71.1 < -31

76.46 < 97.17

-1.2+100 > 54.4-37.4

-11.99+82.32 = 84.39-14.06

Doted 3.1 dn

-94÷(-2.5) > 75÷(-1.5)

Doted 3.2 dn

-83.8÷(-8.38) > 67.5÷(-6.75)

Improper 0.1 fp

3/4×4/5 > 1/2×1/5

Improper 0.2 fp

7/10×60/7 > 2/5×45/16

Improper 1.3 fp

1703/128 > 71/352

Improper 2.2 fp

5/2-185/98 < 2/3+4/3

Improper 2.3 fp

19459/898+22415/898 < 173/2-44/5

Improper 3.1 fp

1/2×2/3 < 5/8×4/5

Improper 3.2 fp

15/2÷45/38 = 3/4÷9/76

Descent 1.1 fn

5/7 > 2/3

Descent 1.2 fn

-64/7 < 26/7

Descent 2.1 fn

-1/5+2/5 < -5/9+8/9

Equations

-x×2-10=6

-6×(-x)=-36

68-x=-2

-x-793=-463

-x×10=-100

x÷3=-291

-x÷5+1=2

2×x-30=90

-8÷(-x+4)=-2

45÷(-83-x)=-15

Rounding

76.8≈77

62.56÷3.03≈20.6

83.78≈83.8

22.004≈22

54.99-15.71≈39.3

99.255-49.624≈49.63

9.9×8.9≈88

49÷67.97≈0.7

Language Exercises

Russian Vocabulary 2.4

мит нг

English Vocabulary 3.3

pea eful

Lexicon 2.3

al rming [anxious]

Infinitive 1.2

waylay waylaid [waylay]

Infinitive 3.1

feed [feed]

13+

Recommended for adolescents from the age of thirteen

Integer Examples

Conversant 0.4 in

-198-626=-824

Conversant 0.5 in

-340000+470000-406000=-276000

Conversant 1.4 in

-68+388=320

Conversant 2.4 in

-478+53+796=371

Conversant 2.5 in

733000+140786-493786=380000

Conversant 3.4 in

806+(-803-181)=-178

Conversant 3.5 in

-648649-(980000-868459)=-760190

Conversant 4.4 in

(530-357)-(750+291)=-868

Conversant 4.5 in

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

9268914÷402=23057

255-2×28×20=-865

-68÷4-536=-553

-270-3×35+360=-15

317-(7+23)×25=-433

7×2×(-20)=-280

-20×(-15)=300

-720÷2÷3=-120

(-1000÷(-2))÷2=250

-900÷3÷(-5×5)=12

9900000÷300=33000

Decimal Examples

Partitive 0.4 dp

478.968-97.735-181.233=200

Partitive 1.4 dp

210-92=118

Partitive 2.4 dp

9.226+380-334.3=54.926

Partitive 3.4 dp

507.389-(334.147+116.782)=56.46

3.98-(-13.02-57)=74

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

-34.48-40.27=-74.75

-53.58-836.42=-890

84.22-90-39.26=-45.04

Split 2.4 dn

-275.078-87.635-530.181=-892.894

Split 3.3 dn

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

Split 3.4 dn

77.155+(215-122.155)=170

99÷30=3.3

0.252÷0.01=25.2

1.14÷4.56=0.25

18×0.12=2.16

2.6×15.12=39.312

3÷1.875=1.6

78.125×0.512=40

1.6÷5×1.5=0.48

66×0.176÷0.704=16.5

79.8÷(0.15×22.4)=23.75

Denary 5.3 dp

95.04÷(0.384×15.625)=15.84

Definition 0.2 dp

30-0.5×2.4+25.46=54.26

Definition 1.2 dp

2÷0.8+67.5=70

Definition 1.3 dp

0.6×0.025+54.579=54.594

Definition 2.2 dp

0.77×15+56.25×0.16=20.55

Definition 2.3 dp

29.175-91×1.02÷4=5.97

Definition 3.2 dp

2.1÷(63.11-52.61)×33.6=6.72

Negatory 0.1 dn

95.9-64÷2.5+20.9=91.2

Negatory 0.2 dn

25.6÷64-69.71=-69.31

Negatory 1.2 dn

-73.12+31.92÷11.2=-70.27

Negatory 1.3 dn

-30.444+0.792×64=20.244

Negatory 2.2 dn

100-10÷2.5-79=17

Negatory 2.3 dn

63.385-0.6×0.015+34.894=98.27

Negatory 3.1 dn

-4×(65.3-69.3)×0.8=12.8

Negatory 3.2 dn

-75×(75-76.12)×0.01=0.84

Residual_ENG 1.2 dp

54÷50=1.08

Divisional_ENG 1.3 dp

0.04÷0.16=0.25

Fraction Examples

Numerator 0.3 fp

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

Numerator 1.3 fp

851/13-214/13=49/1

Numerator 2.3 fp

39927/409-20260/409-19258/409=1/1

Numerator 3.3 fp

707/13+(528/13-5/16)=1515/16

Denominator 0.2 fn

1/2-(-1/10-2/5)=1/1

Denominator 1.2 fn

-52/63+5/7=-1/9

Denominator 1.3 fn

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

Denominator 2.2 fn

-7/9-5/9-26/21=-18/7

Denominator 3.2 fn

-9/4-(4/3+443/100)=-601/75

Fragment 0.1 fp

7/3×4/3÷32/9=7/8

Fragment 0.2 fp

1/3×51/19×741/17=39/1

49/12×4/49=1/3

3/4÷9/4÷5/3=1/5

1/5×203/3×6/5=406/25

1/7÷(2/5×5/2)=1/7

(2/3÷19/3)×95/41=10/41

Reduction 1.3 fp

286/1027=22/79

Limited 0.1 fp

14/5÷(14/3+7/3)=2/5

Limited 1.2 fp

89/2-1/2×3/16=1421/32

Limited 2.1 fp

13/4÷(19/4-17/4)=13/2

Complete 0.1 fn

15/4÷(27/4+3/4)=1/2

Complete 1.1 fn

9/2-1/3×9/2=3/1

Complete 1.2 fn

8/7-428/9÷1498/45=-2/7

Complete 2.1 fn

33/7÷(1/8+3/8)=66/7

Comparisons

Ceil 0.4 in

-438376+764292 > -138143-462878

Ceil 1.4 in

-527758 < 298286

Ceil 2.4 in

-33000-626579 < 590364-135769

Ceil 3.4 in

-737178÷(-2) > -148508÷(-2)

Point 0.3 dp

94.2÷4.71 > 98.01÷29.7

Point 0.4 dp

799.414 > 530.701

Point 2.4 dp

11.339+474.876 > 111.143+83.948

2.5×3.456 < 2×8.4

16×8.4 > 94.73÷2.5

88.103 > -88.098

9.859 > -20.155

546.477 < 635.778

-5.166-52.58 < 37.929+11.949

Doted 2.4 dn

-310.058-30.117 < 735.233-67.565

Doted 3.3 dn

64.548÷1.793 > 77.58÷3.879

Improper 0.3 fp

1/3×20752/277 > 1022/19×19/42

Improper 3.3 fp

43/65×169/731 < 1313/17×85/303

Descent 0.1 fn

-3/5÷(-7/10) > 2/3×3/4

Descent 0.2 fn

-1/3÷1/26 < 1/2÷(-3/2)

Descent 1.3 fn

21517/250 > -6359/75

Descent 2.2 fn

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

Descent 3.1 fn

-2/3×(-1/2) > -1/2×(-2/9)

Descent 3.2 fn

-3/1×(-139/90) > -1/2÷3/20

Equations

-x÷(-3)=89

-1+x÷577=0

-(-x-855)×40=-880

y+x=10

Rounding

Rounding 0.3 dp

89.911-10.411≈79.5

Rounding 3.3 dp

92×0.5≈46

Language Exercises

Russian Vocabulary 1.5

напер вес

Russian Vocabulary 3.4

сув нир

English Vocabulary 1.4

thorou hly

English Vocabulary 2.4

men ion

Lexicon 1.4

b havior [conduct]

Infinitive 2.2

shoot [shoot]

14+

Recommended for adolescents from the age of fourteen

Integer Examples

Intellect 0.3 in

(86+14)×(23+227)=25000

Intellect 1.3 in

-151×82-927=-13309

Intellect 2.3 in

6522+612÷18-1891=4665

Intellect 3.3 in

2077-8464÷(-250-118)=2100

Logics 0.3 in

-5508÷(2×162)×(-99)=1683

8712÷36=242

-2×250÷25=-20

(192÷(-32))×40=-240

3672÷(-2)÷(-17×(-4))=-27

Decimal Examples

24÷60=0.4

718.08÷5.984=120

57×0.032=1.824

17.199÷955.5=0.018

0.5×0.034=0.017

23.04÷102.4×500=112.5

Denary 5.4 dp

(937.476÷156.246)×8.316=49.896

Definition 0.3 dp

3.521×10+41.58÷2=56

Definition 0.4 dp

322.56×1.9-457.938=154.926

Definition 1.4 dp

1.656÷41.4+695.533=695.573

Definition 2.4 dp

295.283+16.56÷460+209.761=505.08

Definition 3.3 dp

(0.521+0.007)÷(1.8+2.6)=0.12

Definition 3.4 dp

(837.579-833.079)÷(149.93-74.93)=0.06

Negatory 0.3 dn

-29.657-61.88÷(5.343+3.157)=-36.937

Negatory 0.4 dn

(-921.415-52.313)÷(1.146+0.618)=-552

Negatory 1.4 dn

-126÷0.672-313.5=-501

Negatory 2.4 dn

699.334-547.2÷4.56×1.829=479.854

Negatory 3.3 dn

10.065-(-0.772-2.978)×1.728=16.545

Negatory 3.4 dn

253.724+(-560.692-271.308)÷32.5=228.124

Residual_ENG 1.3 dp

15÷4=3.75

Fraction Examples

Denominator 0.3 fn

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

Denominator 2.3 fn

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

Denominator 3.3 fn

-2/9+(-286/9-3185/558)=-21041/558

Fragment 0.3 fp

3/4÷3/10÷5/94=47/1

Fragment 3.3 fp

(1/2×134/3)÷67/81=27/1

Limited 0.2 fp

48/11÷8/33+582/23=996/23

Limited 1.3 fp

1/2×35/2+313/4=87/1

Limited 2.2 fp

34/5÷(159/7-145/7)=17/5

Complete 0.2 fn

(702/19+324/19)÷111/67=1206/37

Complete 1.3 fn

-1196/21+14/33÷98/85=-4357/77

Complete 2.2 fn

-(49/2-51/2)×5/53=5/53

Comparisons

Doted 0.4 dn

2 < 721.033

Doted 3.4 dn

589.842÷32.769 = -916.344÷(-50.908)

Descent 0.3 fn

-25723/440 > -1001/17

Descent 2.3 fn

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

Descent 3.3 fn

-14/3÷721/150 < 514/7×(-7/771)

Equations

-x²-3x-2=0

10x²=0

10x²+80x=0

-x²-6x-9=0

y-x=3

x+y=146

2y×8x=576

2y+5x=70

-2x+6y=40

-x+y=10

40x÷8y=-25

8y-8x=160

Language Exercises

Russian Vocabulary 2.5

толл

English Vocabulary 1.5

extra rdinary

English Vocabulary 2.5

unre sonable

English Vocabulary 3.4

presu ably

Lexicon 1.5

surpri ingly [amazingly]

Lexicon 2.4

wo nded [injured]

Infinitive 1.3

mean meant [mean]

Infinitive 3.2

sleep [sleep]

15+

Recommended for adolescents from the age of fifteen

Integer Examples

Logics 0.4 in

-187×30×(-147)=824670

Logics 1.4 in

-11200÷(-200)=56

Logics 2.4 in

15120÷(-15)÷14=-72

Logics 3.4 in

533×(39×(-30))=-623610

Logics 4.4 in

75000÷(10×(-5))÷25=-60

Fraction Examples

Limited 0.3 fp

1/3×7/3-1/36=3/4

Limited 2.3 fp

11932/947÷(4/45+1/9)=59660/947

Complete 0.3 fn

-4/5×105/152-131/399=-37/42

Complete 2.3 fn

-193/14÷(-1/11-4/77)=193/2

Equations

90x²=0

16x²=6400

35x²+2835x=0

x²+2x-288=0

79x-10y=3685

x-y=39

y×9x=45000

32y-9x=2553

-39y-36x=-540

-y-x=-4

66x÷5y=66

-60y+79x=-171

Language Exercises

Russian Vocabulary 3.5

спр ста

English Vocabulary 3.5

expect tion

Lexicon 2.5

transpo tation [conveyance]

Infinitive 2.3

cost [cost]

16+

Recommended for adolescents from the age of fifteen

Equations

-390x²+380250x=0

382x²=2506302

347x²+81198x=0

x²+209x-1962=0

40y-40x=24440

1069200x÷27y=99000

76y+44x=86172

-46x+254y=95236

x-y=-26

-10x×4y=-3149280

-549y+95x=-431389

Language Exercises

Infinitive 3.3

send [send]

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