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

6-4=2

Beginner 3.1 ip

8-1=7

Step-by-step Tasks

3+2=5

1+2=3

1+6=7

1+3=4

3+1=4

2-1=1

2-1=1

3-2=1

4-1=3

6-2=4

4-3=1

Recommended for children from six years

Integer Examples

7+10=17

4-2=2

11-0=11

10-7+2=5

Step-by-step Tasks

4+2=6

6+3=9

5+3=8

4+5=9

4+6=10

7+5=12

0+4=4

6+5=11

3+5=8

4+7=11

2+3=5

4+2=6

4+8=12

5+9=14

6-2=4

10+6=16

5+10=15

8-4=4

7-5=2

10-2=8

15-4=11

14-2=12

10-6=4

11-7=4

7-2=5

16-8=8

11-8=3

18-9=9

0-0=0

16-10=6

Recommended for children from seven years

Integer Examples

3+5=8

20+33=53

92-23=69

58-35=23

20-3-14=3

8-(10-8)=6

Step-by-step Tasks

9+2=11

3+2=5

3+13=16

12+14=26

0+13=13

0+14=14

20+10=30

18-15=3

5+25=30

14+16=30

3+17=20

9-6=3

5-1=4

13-2=11

23-13=10

17-4=13

8-5=3

26-16=10

27-7=20

19-9=10

1×2=2

2×10=20

1×4=4

4÷1=4

Comparisons

Natural 1.1 ip

5 > 2

Natural 2.1 ip

10-0 > 2+2

Language Exercises

Russian Vocabulary 1.1

М сква

Recommended for children from eight years

Integer Examples

16-7=9

283+511=794

797-67=730

957-106=851

34+66-13=87

11-(10-10)=11

38×2=76

20÷4=5

30÷10=3

52+44=96

78-15=63

37+11=48

Step-by-step Tasks

26+14=40

29+6=35

8+13=21

4+9=13

90+10=100

39+11=50

1+4+3=8

27-8=19

20-17=3

19-9=10

3-0=3

39-29=10

60-30=30

3×9=27

8×2=16

4×5=20

10×3=30

10×5=50

10×5=50

5×8=40

6×0=0

9×6=54

5×7=35

6×5=30

8×5=40

8×6=48

3×7=21

9×3=27

0×9=0

5×4=20

1×10=10

10÷2=5

12÷2=6

18÷3=6

8÷2=4

40÷4=10

3÷1=3

30÷5=6

0÷4=0

10÷2=5

0÷6=0

10÷5=2

56÷7=8

36÷4=9

10÷2=5

32÷8=4

24÷8=3

54÷9=6

35÷5=7

80÷8=10

100÷10=10

Comparisons

10÷10 < 6÷1

46 = 46

82-61 < 99-51

10÷10 < 7×1

Equations

Linear 1.1 ip

x+6=8

Linear 2.1 ip

6×x=6

Language Exercises

Russian Vocabulary 1.2

н рочно

Russian Vocabulary 2.1

ч снок

Russian Vocabulary 3.1

кол кольчик

English Vocabulary 1.1

English Vocabulary 2.1

a d

Lexicon 1.1

pa s [go]

Lexicon 2.1

ar a [sphere]

Recommended for children from nine years

Integer Examples

79-49=30

318-27+316=607

49+(31+12)=92

60÷(6÷2)=20

9×31=279

532÷4=133

40÷10=4

18÷3÷2=3

(18÷3)÷2=3

60×2÷(3×4)=10

50÷5=10

5899+1801=7700

5356-4837=519

1135+6196=7331

27×4=108

90÷6=15

46×3-90=48

48×2-44÷4=85

90÷9=10

20÷7=2(6)

Step-by-step Tasks

15×2=30

11×8=88

14×3=42

45×2=90

4×12=48

5×18=90

12×4=48

49×2=98

20×1=20

6×15=90

13×7=91

6×15=90

8×16=128

16×5=80

9×11=99

19×9=171

7×5=35

50×4=200

7×8=56

34÷2=17

0÷11=0

24÷3=8

2÷2=1

76÷4=19

95÷5=19

16÷2=8

64÷4=16

20÷10=2

54÷6=9

49÷7=7

56÷7=8

72÷8=9

40÷5=8

45÷9=5

32÷8=4

490÷10=49

135÷9=15

32÷4=8

Comparisons

4×9 > 60÷2

394 > 378

671-177 = 980-486

4×4 < 11×4

Equations

Linear 1.2 ip

23+x=63

Linear 2.2 ip

x×2=20

Linear 3.1 ip

7+x÷5=8

Language Exercises

Russian Vocabulary 1.3

геогра

Russian Vocabulary 2.2

наде ться

Russian Vocabulary 3.2

б лет

English Vocabulary 3.1

m od

10+

Recommended for children from ten years

Integer Examples

738-(902-379)=215

82493+27507=110000

950543-250543=700000

671069-157263=513806

431-(588-541)=384

3×28=84

26×27=702

9000÷4=2250

4200÷2=2100

400÷4÷2=50

(25×40)÷20=50

2×(10÷5)×100=400

238÷14=17

211817+782205=994022

1000000-769475=230525

731324+78676=810000

6615×2=13230

1379×70=96530

928÷2=464

92÷2-34=12

538+13×18=772

158×6+540÷20=975

49+(12+28)÷8=54

696÷2=348

112÷14=8

Comparisons

Natural 0.3 ip

380 > 180

Natural 1.4 ip

611200 < 611247

Natural 2.4 ip

385288+74712 < 994888-126225

Natural 3.3 ip

360÷9 = 560÷14

Equations

(x+2)×3=9

917-x=137

x×50=450

x×7+20=90

6÷(1+x)=3

Rounding

Round 1.1 ip

923≈92

Round 1.2 ip

9156≈92

Round 2.1 ip

28+24≈5

Language Exercises

Russian Vocabulary 2.3

независ мость

English Vocabulary 1.2

b droom

English Vocabulary 2.2

ra ely

Lexicon 1.2

re r [background]

Lexicon 2.2

Apr l [month]

Infinitive 1.1

undersell undersold [undersell]

11+

Recommended for children from the age of eleven

Integer Examples

Beginner 0.5 ip

452220-(652958-560738)=360000

Beginner 4.5 ip

860109-833681+73544=99972

Beginner 5.5 ip

956690-(928328-12477)=40839

Conversant 1.1 in

-4+4=0

Conversant 1.5 in

147594-525292=-377698

4-9-5=-10

800÷40=20

5×15×32=2400

(300÷6)×180=9000

5×(3×13)×26=5070

516÷70=7(26)

11125×800=8900000

7033÷13=541

629+42÷6=636

4200-600÷20-3362=808

290×16-3379=1261

3528+81×32×16=45000

(57+103)÷(770-754)=10

Numeracy 3.3 ip

(136+1704)÷(53+867)=2

Divisor_ENG 1.3 ip

6600÷40=165

Remainder_ENG 1.3 ip

263÷27=9(20)

Decimal Examples

Partitive 0.1 dp

6.2-1-1.4=3.8

Partitive 0.2 dp

24.9+(92.2-41.5)=75.6

1.6+8.4=10

63.9-37.9=26

8.4-1.2-2.2=5

17.4+2+58.6=78

2.4+(0.1+1)=3.5

12.2+(39+3.6)=54.8

3.7÷0.5=7.4

3×6.6=19.8

36÷0.6=60

7×1.2=8.4

Divisional_ENG 1.1 dp

1.8÷3=0.6

Fraction Examples

Numerator 1.1 fp

9/10-3/10=3/5

Comparisons

585389 > 324258

13×16 < 35732÷2

-3 < 7

3 > -8

-1-7 < -0+10

-6÷3 < 4×2

20.7 < 34.8

34+26.2 = 8.1+52.1

1/6 < 9/10

308/61 < 83/10

5/6-1/3 < 1/2+1/6

Equations

100÷(73-x)=4

352÷(65-x)=176

x÷8+922=927

15×(x-44)=30

714÷(x+1)=51

-x+4=-3

3×(-x)=-3

Rounding

37.3≈37

73.2-9.5≈64

691≈69

5578÷2≈28

1117×107≈120

608331≈608

10000-7284≈27

476428-337943≈138

11×91≈100

1123×3≈34

8969×52≈466

Language Exercises

Russian Vocabulary 1.4

фильм тека

Russian Vocabulary 3.3

сост заться

English Vocabulary 1.3

pr per

English Vocabulary 2.3

contin e

English Vocabulary 3.2

ro gh

Lexicon 1.3

un form [outfit]

Infinitive 2.1

outsit [outsit]

12+

Recommended for children from the age of twelve

Integer Examples

2-9=-7

-4-4=-8

47-22-16=9

-14-5=-19

-61+51=-10

20-20+16=16

50-54+83=79

10-(-5+5)=10

19+(-5+6)=20

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

(8-0)-(3-4)=9

(20+6)+(12-19)=19

-(83-54)+(80-59)=-8

20÷2×(78÷13)=60

384×150=57600

293524÷4=73381

756588÷14=54042

32×15×327=156960

(500÷2)×40=10000

4900÷49÷(50÷25)=50

65000×1499=97435000

37200÷10=3720

-45÷5-51=-60

-91÷13+11=4

63-60÷3+54=97

50+(-28-30)×2=-66

-66÷(-36÷6)×5=55

-60÷(-3)=20

-48÷(-2)÷4=6

(36÷(-2))÷2=-9

-32÷(-2×2)÷2=4

78100÷25=3124

Decimal Examples

Partitive 0.3 dp

44.53+(53.84-45)=53.37

Partitive 1.3 dp

81.69-52.51=29.18

Partitive 2.3 dp

83.79+7.74+5.48=97.01

Partitive 3.3 dp

84.01-(77.52-25.51)=32

Split 0.1 dn

-5.2-1.6=-6.8

Split 0.2 dn

-14.3+(55.7-63.9)=-22.5

-1.2-5.1=-6.3

51+45=96

-1-1-4.8=-6.8

8.9+52.4-52.3=9

2.9-(-1.8+3)=1.7

-17.4-(0.6-30.2)=12.2

27÷5=5.4

3.92÷0.05=78.4

19.8÷3÷3.3=2

26×0.37=9.62

11.2÷70=0.16

4×0.06=0.24

9×2.8÷7.2=3.5

1.6×(5×0.1)=0.8

0.5×(100-98)×1.6=1.6

0.8×100-11.8=68.2

10.4-0.8×5+75.7=82.1

94.7-62.4÷(0.5+0.7)=42.7

Negatory 1.1 dn

32÷2.5-25=-12.2

Negatory 2.1 dn

-91+4.5×11.4-29.6=-69.3

Residual_ENG 1.1 dp

57÷10=5.7

Divisional_ENG 1.2 dp

0.09÷0.6=0.15

Fraction Examples

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

203/31-109/62=297/62

17/10+81/50=83/25

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

49/8-409/72+59/9=7/1

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

23/11+(87/11-238/33)=92/33

-2/9-5/9=-7/9

7/10-1/10=3/5

3/10-3/5+3/10=0/1

3/5-(-2/5+7/8)=1/8

21/4÷3/2=7/2

112/9÷14/45=40/1

1/2÷1/6×13/7=39/7

171/45=19/5

1200/50=24/1

15/2+2/3×9/8=33/4

Comparisons

-38×2 < 16÷(-2)

873 > -188

85 > -81

450 > -610

-37-2 < 39-37

860-7 > 134-553

100÷(-25) < -90÷30

-9×(-54) < -24×(-21)

14 > 13.8

1.8×39.2 < 4.14×20

81.89 > 51.14

83.811 < 83.827

210.97 > 155.721

43.7+20.3 > 8.43+54.76

Point 2.3 dp

5.3+28.228 > 15.373+8.373

Point 3.1 dp

67.6÷4 < 73.1÷4.3

Point 3.2 dp

11×0.6 < 25.6×3.5

Doted 0.1 dn

-0.6×(-40) > -57÷(-3)

-54.66 < 6

-89.7 < 35

76.46 < 97.17

-49-1 < -31.6+75.9

16.21+15.79 > -45.73-24.27

Doted 3.1 dn

53.1÷1.8 < 3×9.9

Doted 3.2 dn

-95.76÷(-23.94) = -43.4÷(-10.85)

Improper 0.1 fp

1/5 < 7/10

Improper 0.2 fp

13/15×5/13 < 9/10÷6/5

Improper 1.3 fp

190/261 < 256/297

Improper 2.2 fp

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

Improper 2.3 fp

156/5+12237/215 > 4001/43-657/43

Improper 3.1 fp

1/2×2/3 < 5/8×4/5

Improper 3.2 fp

13/3÷49/12 < 1/2÷1/19

Descent 1.1 fn

4/5 > -1/3

Descent 1.2 fn

-5/1 < 1/2

Descent 2.1 fn

3/5+1/5 > 2/5+1/10

Equations

x÷2+4=-1

-58-x=32

3+x=0

x+720=0

10×(-x)=70

x×(-31)=-930

1+5÷x=0

2×x-30=90

-8÷(-x+4)=-2

36÷(-x-82)=6

Rounding

80.9-15.9≈65

45.56-11.54≈34

82.78≈82.8

77.461≈77.46

52.06+0.95≈53

3.977+18.018≈22

93.3÷28≈3

49÷67.97≈0.7

Language Exercises

Russian Vocabulary 2.4

н жданный

English Vocabulary 3.3

w rking

Lexicon 2.3

to ards [to]

Infinitive 1.2

overshoot overshot [overshoot]

Infinitive 3.1

make [make]

13+

Recommended for adolescents from the age of thirteen

Integer Examples

Conversant 0.4 in

-(74+223)+(670+7)=380

Conversant 0.5 in

388273+(993690-733140)=648823

Conversant 1.4 in

-732+20=-712

Conversant 2.4 in

742+557-390=909

Conversant 2.5 in

-25408-300629-472474=-798511

Conversant 3.4 in

61+(946-869)=138

Conversant 3.5 in

135317-(-250000+825317)=-440000

Conversant 4.4 in

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

Conversant 4.5 in

(228929-350682)+(340000+432050)=650297

400000÷400=1000

-238+968÷(-2-2)=-480

11+22÷2=22

159+4×6+181=364

600-27÷(10+17)=599

7×2×(-20)=-280

24÷(-3)=-8

500÷10÷(-5)=-10

(10÷(-5))×(-10)=20

2×(-5)×(-100÷(-10))=-100

Divisor_ENG 1.5 ip

9900000÷300=33000

Decimal Examples

Partitive 0.4 dp

18+(462+194.741)=674.741

Partitive 1.4 dp

420.005-20.005=400

Partitive 2.4 dp

197.999+214.085-122.084=290

Partitive 3.4 dp

237.038+(265.417+175.545)=678

Split 0.3 dn

10-77.38+79.44=12.06

Split 0.4 dn

119.87-341.97+409.266=187.166

Split 1.3 dn

2.59+68=70.59

Split 1.4 dn

-450-152.449=-602.449

Split 2.3 dn

59.44+16.07-80=-4.49

Split 2.4 dn

-321.327+225.967-444.551=-539.911

Split 3.3 dn

62.85+(-56.6+55.19)=61.44

Split 3.4 dn

105.845-(-165.539+141.384)=130

30÷25=1.2

0.072÷0.1=0.72

3.75×0.04=0.15

2.208÷(2.4×0.32)=2.875

2.5×5.904=14.76

3÷1.875=1.6

10.35×5.28=54.648

43.75×0.24÷7.5=1.4

2.34÷4.5×18=9.36

1.6×(6.25×4)=40

(35.858÷17.929)×0.002=0.004

Definition 0.2 dp

14×3.61+10.8÷90=50.66

Definition 1.2 dp

50.4÷6.72-3.27=4.23

Definition 1.3 dp

86.284-78.125×0.256=66.284

Definition 2.2 dp

34.72-0.98×4×1.25=29.82

Definition 2.3 dp

2.321-1.35÷25+7.042=9.309

Definition 3.2 dp

50.1-0.8÷(75.64-67.64)=50

Negatory 0.1 dn

11+28.5×1.2+2.8=48

Negatory 0.2 dn

82.5÷(0.93+5.32)×4.5=59.4

Negatory 1.2 dn

-33.26-52.92÷18.9=-36.06

Negatory 1.3 dn

-30.444+0.792×64=20.244

Negatory 2.2 dn

30.94÷6.8-2.7÷1.08=2.05

Negatory 2.3 dn

-15×1.76+2.16÷0.025=60

Negatory 3.1 dn

(11.7+7.8)÷(29+36)=0.3

Negatory 3.2 dn

88.57+62.4÷(45.46-50.66)=76.57

Residual_ENG 1.2 dp

92÷4=23

Divisional_ENG 1.3 dp

24.472÷0.46=53.2

Fraction Examples

Numerator 0.3 fp

73/9+(2675/549+1099/61)=31/1

Numerator 1.3 fp

787/9-4813/117=602/13

Numerator 2.3 fp

4153/792+6119/792-1709/231=39/7

Numerator 3.3 fp

206/9+(397/9-8212/809)=45991/809

Denominator 0.2 fn

-105/23+1/4=-397/92

Denominator 1.2 fn

-17/3-76/99=-637/99

Denominator 1.3 fn

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

Denominator 2.2 fn

-5/31+49/31-68/31=-24/31

Denominator 3.2 fn

36/5+(-151/30+79/30)=24/5

1/2÷1/5÷9/2=5/9

(3/2÷1/9)×11/3=99/2

175/4×28/25=49/1

33/2×9/11÷9/4=6/1

1/2×260/3÷130/27=9/1

13/4÷(3/5÷6/5)=13/2

189/40÷(21/13÷7/39)=21/40

Reduction 1.3 fp

1050/30=35/1

Limited 0.1 fp

5/4+1/3÷2/9=11/4

Limited 1.2 fp

1/3×1251/26+231/26=324/13

15/8×(9/2-25/6)=5/8

39/4-5/2÷10/3=9/1

9/2-1/3×9/2=3/1

-569/13+7/11×1969/91=-30/1

Complete 2.1 fn

12/5÷(-1/3-11/3)=-3/5

Comparisons

Ceil 0.4 in

-2×(-18) < 9000×6

Ceil 1.4 in

596574 > -601125

Ceil 2.4 in

-202637+662637 < 105202+359469

Ceil 3.4 in

-2×315172 < -793184÷2

Point 0.3 dp

91.924÷6.566 > 0.622×22.5

Point 0.4 dp

914.147 > 914.141

Point 2.4 dp

221.193-208.918 < 650-169.011

Point 3.3 dp

2.304×37.5 > 10.236÷1.706

Point 3.4 dp

50.6×0.75 < 33.12×1.25

-28.96 < 60.864

-77.522 < -77.515

-12.675 > -563.71

-15.399-17.51 > 10-89.552

Doted 2.4 dn

564.555+314.218 > 123.282-414.587

Doted 3.3 dn

64.548÷1.793 > 77.58÷3.879

Improper 0.3 fp

544/891+55534/891 > 725/18-2777/126

Improper 3.3 fp

1/4×176/47 < 471/17×2125/628

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

-39/53 > -16/17

Descent 2.2 fn

-449/45+29/3 < 10/1-1/3

Descent 3.1 fn

-1/2÷(-3/4) > -5/6×(-3/5)

Descent 3.2 fn

5/1×(-73/50) < 4/11÷(-16/33)

Equations

-56-x=86

-480+780÷x=-450

-(-x-855)×40=-880

y-x=1

Rounding

Rounding 0.3 dp

16.293+14.006≈30.3

Rounding 3.3 dp

92×0.5≈46

Language Exercises

Russian Vocabulary 1.5

хл стать

Russian Vocabulary 3.4

нев данный

English Vocabulary 1.4

there ore

English Vocabulary 2.4

rema ning

Lexicon 1.4

c nnection [union]

Infinitive 2.2

shoe [shoe]

14+

Recommended for adolescents from the age of fourteen

Integer Examples

Intellect 0.3 in

-158×54-2160÷80=-8559

Intellect 1.3 in

-151×82-927=-13309

Intellect 2.3 in

-100×44+35×212=3020

Intellect 3.3 in

(3527-3027)×(400-395)=2500

(1296÷36)÷6=6

72×(-90)=-6480

80÷(-20)÷(-2)=2

-3861÷(-99÷3)=117

-83×(29×(-86))÷58=3569

Decimal Examples

89÷100=0.89

12.48÷(192÷100)=6.5

0.5×0.18=0.09

9.072÷0.648=14

4×0.012=0.048

0.8×20÷0.04=400

2×(0.52×0.025)=0.026

3.078÷1.35+5×7.168=38.12

Definition 0.4 dp

310×0.104+48.75×12.672=650

Definition 1.4 dp

762.4+8.832×3.125=790

Definition 2.4 dp

216-137.088÷7.168+669.723=866.598

Definition 3.3 dp

42.754+(53.933-51.133)×1.8=47.794

Definition 3.4 dp

586.15-0.532÷(622.14-622.015)=581.894

Negatory 0.3 dn

-42.5×1.28-25.444=-79.844

Negatory 0.4 dn

19.6÷0.875-1.6×5.6=13.44

Negatory 1.4 dn

100÷12.5-435.267=-427.267

Negatory 2.4 dn

-521.82-22.4÷7.168÷25=-521.945

Negatory 3.3 dn

31.665+72.8÷(28.971-32.299)=9.79

Negatory 3.4 dn

400.516-(-185.856-102.144)÷51.2=406.141

Residual_ENG 1.3 dp

92÷16=5.75

Fraction Examples

Denominator 0.3 fn

2/3-89/3=-29/1

Denominator 2.3 fn

-26275/289+2/3+77686/867=-11/17

Denominator 3.3 fn

55/19-(995/133+5375/133)=-45/1

Fragment 0.3 fp

35/3÷(2/3×1/2)=35/1

Fragment 3.3 fp

(212/5×33/53)×106/33=424/5

Limited 0.2 fp

1255/36-27/32×2104/81=233/18

Limited 1.3 fp

1/8×3424/643-274/643=154/643

Limited 2.2 fp

1/6÷(1/4+1/4)=1/3

Complete 0.2 fn

(702/19+324/19)÷111/67=1206/37

Complete 1.3 fn

4037/790+17/395×2705/34=3371/395

Complete 2.2 fn

(-208/17-183/17)×1/32=-23/32

Comparisons

Doted 0.4 dn

-427.05÷(-26) > 3.825×(-12.8)

Doted 3.4 dn

-5×(-7.176) < -50.4×(-1.275)

Descent 0.3 fn

-50/7×(-63/40) > -135/2÷405/314

Descent 2.3 fn

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

Descent 3.3 fn

85/1×26/85 < -12/17×(-153/4)

Equations

x²=16

2x²=72

6x²-30x=0

-x²+12x-11=0

6x×4y=960

x+y=105

10x×y=200

10y+4x=116

2x×y=160

x-y=-6

8x×2y=-320

-10y+10x=0

Language Exercises

Russian Vocabulary 2.5

перп ндикуляр

English Vocabulary 1.5

enthu iastic

English Vocabulary 2.5

commun cation

English Vocabulary 3.4

id ntify

Lexicon 1.5

bl me [condemn]

Lexicon 2.4

contrib te [promote]

Infinitive 1.3

rehear reheard [rehear]

Infinitive 3.2

fight [fight]

15+

Recommended for adolescents from the age of fifteen

Integer Examples

Logics 0.4 in

-19×26÷(4199÷(-221))=26

Logics 1.4 in

-625×(-512)=320000

Logics 2.4 in

-1250÷(-25)×(-900)=-45000

Logics 3.4 in

533×(39×(-30))=-623610

Logics 4.4 in

-17×(-39)×(10×24)=159120

Fraction Examples

Limited 0.3 fp

1071/125÷(13/20-31/100)=126/5

Limited 2.3 fp

(9/11-19/77)÷1/28=16/1

Complete 0.3 fn

-831/31÷(1/2-139/2)=277/713

Complete 2.3 fn

(159/10+4293/70)×353/901=1059/35

Equations

-75x²-7500x=0

43x²=44032

40x²-2120x=0

x²+2x-288=0

79x-10y=3685

y+x=1296

36x÷9y=3

55y+44x=6490

-x-y=-70

-x-y=-26

-2160x÷72y=-60

-4y-69x=-2780

Language Exercises

Russian Vocabulary 3.5

гор мыка

English Vocabulary 3.5

contrib tion

Lexicon 2.5

enco rage [promote]

Infinitive 2.3

thrust [thrust]

16+

Recommended for adolescents from the age of fifteen

Equations

-415x²-111635x=0

58x²=449152

938x²-741020x=0

4x²-440x-16800=0

125y+98x=172033

5y÷10x=1

76y+44x=86172

x+y=-30

-y-x=-72

2y×2x=-112320

223y-115x=-78090

Language Exercises

Infinitive 3.3

send [send]

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