ProporzioniEserciziarioComporreScomporre
Transcript
ProporzioniEserciziarioComporreScomporre
Proporzioni. Eserciziario ragionato - 1 Raccolta di proporzioni con il comporre e lo scomporre Arithmetic - Proportion Solved Exercises with properties 1. (8+x) : x = 5 : 3 [12] 2. (3+x) : x = 6 : 4 [6] 3. (20+x) : x = 5 : 3 [21] 4. (45-x) : x = 8 : 7 [30] 5. (4+x) : x = 7 : 5 [10] 6. (10-x) : x = 3 : 2 [4] 7. (30-x) : x = 4 : 6 [18] 8. (6-x) : x = 8 : 4 [2] 9. x : 18 = (15-x) : 27 [6] 10. (24-x) : x = 8 : 4 [8] 11. 18 : x = 27 : (20-x) [8] 12. (35-x) : x = 4 : 3 [15] 13. (8+x) : x = 5 : 3 [12] 14. 36 12 32 x x [8] 15. 36 12 32 x x [8] 16. (18+x) : x = 14 : 8 [24] 17. (14-x) : x = 5 : 9 [9] 18. (14-x) : x = 27 : 15 [5] 19. 2 : x = 9 : (21+x) [6] 20. (36+x) : 12 = x : 3 [12] 21. x : 3 = (68+x) : 20 [12] 22. x : (12-x) = 4 : 2 [8] 23. x : (12-x) = 2 : 4 [4] 24. x : (56-x) = 18 : 10 [36] 25. x : (16-x) = 3 : 5 [6] 26. x : (12-x) = 4 : 12 [3] 27. 2 + 𝑥 : 𝑥 = 16: 7 [2/9] 28. 3 7 5 x x 2 10 7 [5/8] 29. 19 2 3 x x 15 3 5 [2/3] 7 Copyright© 1988-2007 owned by Ubaldo Pernigo, please contact: [email protected] Licenza di questo documento: “GNU Free Documentation License". GNU Free Documentation License Versione 1.1, Marzo 2000 - Copyright (C) 2000 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Proporzioni. Eserciziario ragionato - 2 30. 3 1 5 x x 5 1 2 12 6 [1/6] 31. 17 5 4 x x 24 8 3 [5/8] 32. 8 2 3 x x 21 3 8 [3/22] 33. 1 1 1 5 19 11 x x 1 4 4 7 28 6 8 [2] 34. 3 10 1 3 2 2 1 1 3 x x 24 6 5 3 30 5 4 4 [3/13] 35. 4 4 1 7 5 12 8 6 5 12 3 15 4 18 32 5 x x [3/7] 36. 4 5 1 7 22 5 1 2 x x 1 1 3 2 4 16 7 12 12 11 [16/3] 37. 3 7 7 7 x x 1 4 4 2 8 [1/4] Visita www.vilaespercanca.org Copyright© 1988-2007 owned by Ubaldo Pernigo, please contact: [email protected] Licenza di questo documento: “GNU Free Documentation License". GNU Free Documentation License Versione 1.1, Marzo 2000 - Copyright (C) 2000 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Proporzioni. Eserciziario ragionato - 3 Soluzioni =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (8+x) : x = 5 : 3 (8+x-x) : x = (5-3) : 3 8:x=2:3 8∙3 𝑥= = 4 ∙ 3 = 12 2 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (3+x) : x = 6 : 4 (3+x-x) : x = (6-4) : 4 3:x=2:4 3∙4 𝑥= =3∙2=6 2 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (45-x) : x = 8 : 7 (45+x-x) : x = (8+7) : 7 45 : x = 15 : 7 45 ∙ 7 𝑥= = 3 ∙ 7 = 21 15 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (20+x) : x = 5 : 3 (20+x-x) : x = (5-3) : 3 20 : x = 2 : 3 20 ∙ 3 𝑥= = 10 ∙ 2 = 30 2 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (4+x) : x = 7 : 5 (4+x-x) : x = (7-5) : 5 4:x=2:5 4∙5 𝑥= = 2 ∙ 5 = 10 2 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (10-x) : x = 3 : 2 (10-x+x) : x = (3+2) : 2 10 : x = 5 : 2 10 ∙ 2 𝑥= =2∙2= 4 5 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (30-x) : x = 4 : 6 (30-x+x) : x = (4+6) : 6 30 : x = 10 : 6 30 ∙ 6 𝑥= = 3 ∙ 6 = 18 10 Copyright© 1988-2007 owned by Ubaldo Pernigo, please contact: [email protected] Licenza di questo documento: “GNU Free Documentation License". GNU Free Documentation License Versione 1.1, Marzo 2000 - Copyright (C) 2000 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Proporzioni. Eserciziario ragionato - 4 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= x : 18 = (15-x) : 27 x : (15-x) = 18 : 27 (15-x) : x = 27 : 18 (15-x+x) : x = (27+18) : 18 15 : x = 45 : 18 15 18 1 18 x= =6 45 3 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (24-x) : x = 8 : 4 (24-x+x) : x = (8+4) : 4 24 : x = 12 : 4 24 4 x= = 2·4 = 8 12 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 18 : x = 27 : (20-x) (20-x) : x = 27 : 18 (20-x+x) : x = (27+18) : 18 20 : x = 45 : 18 20 18 x= =8 45 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (35-x) : x = 4 : 3 (35-x+x) : x = (4+3) : 3 35 : x = 7 : 3 3 35 x= = 3·5 = 15 7 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (8+x) : x = 5 : 3 (8+x-x) : x = (5-3) : 3 8:x=2:3 83 x= = 4·3 = 12 2 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 36 12 32 x x 32 x x 36 12 32 x x x 36 12 12 32 x 48 12 32 12 x 8 48 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Copyright© 1988-2007 owned by Ubaldo Pernigo, please contact: [email protected] Licenza di questo documento: “GNU Free Documentation License". GNU Free Documentation License Versione 1.1, Marzo 2000 - Copyright (C) 2000 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Proporzioni. Eserciziario ragionato - 5 36 12 32 x x 32 x x 36 12 32 x x x 36 12 12 32 x 48 12 32 12 x 8 48 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (18+x) : x = 14 : 8 (18+x-x) : x = (14-8) : 8 18 : x = 6 : 8 18 8 x= = 3·8 = 24 6 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (14-x) : x = 5 : 9 (14-x+x) : x = (5+9) : 9 14 : x = 14 : 9 14 9 x= =9 14 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (14-x) : x = 27 : 15 (14-x+x) : x = (27+15) : 15 14 : x = 42 : 15 14 15 2 15 x= =5 42 6 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 2 : x = 9 : (21+x) (21+x) : x = 9 : 2 (21+x-x) : x = (9-2) : 2 21 : x = 7 : 2 21 2 x= = 3·2 = 6 7 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= (36+x) : 12 = x : 3 (36+x) : x = 12 : 3 (36+x-x) : x = (12-3) : 3 36 : x = 9 : 3 36 3 x= = 4·3 = 12 9 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Copyright© 1988-2007 owned by Ubaldo Pernigo, please contact: [email protected] Licenza di questo documento: “GNU Free Documentation License". GNU Free Documentation License Versione 1.1, Marzo 2000 - Copyright (C) 2000 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Proporzioni. Eserciziario ragionato - 6 x : 3 = (68+x) : 20 x : (68+x) = 3 : 20 (68+x) : x = 20 : 3 (68+x-x) : x = (20-3) : 3 68 : x = 17 : 3 68 3 x= = 4·3 = 12 17 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= x : (12-x) = 4 : 2 (12-x) : x= 2 : 4 (12-x+x) : x = (2+4) : 4 12 : x = 6 : 4 12 4 x= 24 = 8 6 =-=-=-=-=-=-=-= x : (12-x) = 2 : 4 (12-x) : x= 4 : 2 (12-x+x) : x = (2+4) : 2 12 : x = 6 : 2 12 2 x= 22 = 4 6 =-=-=-=-=-=-=-= x : (56-x) = 18 : 10 (56-x) : x= 10 : 18 (56-x+x) : x = (10+18) :18 56 : x = 28 : 18 56 ∙ 18 𝑥= = 2 ∙ 18 = 36 28 =-=-=-=-=-=-=-= x : (16-x) = 3 : 5 (16-x) : x= 5 : 3 (16-x+x) : x = (5+3):3 16 : x = 8 : 3 16 ∙ 3 𝑥= =2∙3= 6 8 =-=-=-=-=-=-=-= x : (12-x) = 4 : 12 (12-x) : x= 12 : 4 (12-x+x) : x = (12+4):4 12 : x = 16 : 4 12 ∙ 4 12 ∙ 1 𝑥= = =3 16 4 =-=-=-=-=-=-=-= 2 + 𝑥 : 𝑥 = 16: 7 7 2 + 𝑥 − 𝑥 : 𝑥 = (16 − 7): 7 7 -=-=-=-=-=-=-=-=-=-= -=-=-=-=-=-=-=-=-=-= -=-=-=-=-=-=-=-=-=-= -=-=-=-=-=-=-=-=-=-= -=-=-=-=-=-=-=-=-=-= Copyright© 1988-2007 owned by Ubaldo Pernigo, please contact: [email protected] Licenza di questo documento: “GNU Free Documentation License". GNU Free Documentation License Versione 1.1, Marzo 2000 - Copyright (C) 2000 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Proporzioni. Eserciziario ragionato - 7 2 : 𝑥 = 9: 7 7 2 1 2 𝑥 = ∙7∙ = 7 9 9 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 3 7 5 x x 2 10 7 5 3 7 7 x x x 7 2 10 10 5 15 7 7 x 7 10 10 5 8 7 x 7 10 10 5 7 10 5 x 7 10 8 8 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 19 2 3 x x 15 3 5 3 2 19 x x 5 3 15 19 3 x x x 15 5 2 2 3 3 19 9 10 2 x 15 15 3 19 19 2 x 15 15 3 19 2 15 2 x 15 3 19 3 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 3 1 5 x x 5 1 6 2 12 13 13 5 x x 2 12 6 5 13 13 13 x x x 6 2 12 12 5 65 13 x 6 12 12 5 13 12 1 x 6 12 65 6 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Copyright© 1988-2007 owned by Ubaldo Pernigo, please contact: [email protected] Licenza di questo documento: “GNU Free Documentation License". GNU Free Documentation License Versione 1.1, Marzo 2000 - Copyright (C) 2000 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Proporzioni. Eserciziario ragionato - 8 17 5 4 x x 24 8 3 4 17 5 5 x x x 3 24 8 8 4 17 15 5 x 3 24 8 4 32 5 x 3 24 8 4 4 5 5 4 3 5 x x 3 3 8 8 3 4 8 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 8 2 3 x x 21 3 8 2 8 3 x x 3 21 8 3 2 8 8 x x x 8 3 21 21 3 14 8 8 x 8 21 21 3 22 8 x 8 21 21 3 8 21 3 x 8 21 22 22 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 1 1 1 5 19 11 x x 1 4 4 7 28 6 8 19 11 8 2 7 4 5 x x 8 6 28 19 1 6 x x 3 6 8 2 8 14 19 11 8 2 7 4 5 x x 8 6 28 19 1 3 3 x x x 6 8 14 14 19 14 24 3 x 6 112 14 3 8 19 3 19 x 6 1 1 2 56 14 1 9 3 5 6 4 x 2 6 2 1 4 1 9 Copyright© 1988-2007 owned by Ubaldo Pernigo, please contact: [email protected] Licenza di questo documento: “GNU Free Documentation License". GNU Free Documentation License Versione 1.1, Marzo 2000 - Copyright (C) 2000 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Proporzioni. Eserciziario ragionato - 9 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 3 10 1 3 2 2 1 1 3 x x 24 6 5 3 30 5 4 4 3 5 2 3 10 1 1 1 x x 3 12 5 15 5 4 4 3 7 3 9 1 1 3 x x 4 4 12 5 15 5 9 7 9 9 1 1 x x 3 12 15 5 4 2 18 1 3 5 x x 4 12 15 1 1 6 x x 4 2 1 1 6 6 x x x 2 4 13 1 6 x 2 4 6 1 2 3 x 1 4 13 13 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 4 4 1 7 5 12 8 6 5 12 3 15 4 18 32 5 x x 12 5 1 7 5 2 1 6 15 3 15 4 3 4 5 x x 7 1 7 5 8 3 6 15 3 15 4 12 5 x x 7 1 7 5 11 6 15 3 15 4 12 5 x x 7 5 7 15 11 6 15 12 5 x x 9 4 1 6 x x 3 5 15 12 3 1 1 6 x x x 5 3 3 5 95 1 6 x 15 3 5 5 3 1 6 15 x 5 14 7 13 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Copyright© 1988-2007 owned by Ubaldo Pernigo, please contact: [email protected] Licenza di questo documento: “GNU Free Documentation License". GNU Free Documentation License Versione 1.1, Marzo 2000 - Copyright (C) 2000 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Proporzioni. Eserciziario ragionato - 10 4 5 1 7 22 5 1 2 x x 1 1 3 2 4 16 7 12 12 11 4 7 11 7 22 40 4 2 x x 3 16 7 12 12 11 19 4 7 12 7 22 38 x x 3 16 8 7 12 11 11 7 22 19 4 7 x x 3 8 7 11 11 22 19 x x 1 3 8 22 19 x x 1 3 8 22 19 x x x 1 1 3 8 22 11 x 1 3 8 22 8 16 x 3 11 3 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= 3 7 7 7 x x 1 4 4 2 8 3 7 7 7 7 x x x 1 4 4 2 8 8 7 7 7 7 7 x 4 4 2 8 8 7 21 7 7 x 4 4 8 8 x 7 7 42 7 7 7 8 1 4 8 8 4 8 49 4 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Copyright© 1988-2007 owned by Ubaldo Pernigo, please contact: [email protected] Licenza di questo documento: “GNU Free Documentation License". GNU Free Documentation License Versione 1.1, Marzo 2000 - Copyright (C) 2000 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Proporzioni. Eserciziario ragionato - 11 Keywords Matematica, Aritmetica, Proporzionalità, Proporzioni, calcolo del termine incognito di una proporzione, estremi, medi, proporzioni, risolvere una proporzione, Raccolta di proporzioni con il comporre e lo scomporre ricerca termine incognito, incognita, x, medio proporzionale, comporre, scomporre, esercizi con soluzioni Math, Arithmetic, Proportion, Proportionality, proportion properties, extremes, means, solving a proportion, proportionality problem, Math solved exercises Matemática, Aritmética, Proporción Mathématique, Arithmétique, Proportion Mathematik, Arithmetik, das Verhältnis Arabic: َعدَد، َحجْ م،َك ِميَّه Chinese 比例 Czech: poměr Danish: forhold Dutch: verhouding Estonian: (õige) vahekord Finnish: suhde Greek: αναλογία Hungarian: arány Icelandic: hlutfall Indonesian: perbandingan Japanese: 割合 Korean: (양·크기·수 따위의) 비, 비율 Latvian: proporcija; attiecība; samērs Lithuanian: proporcija, santykis Norwegian: forhold Polish: proporcja Portuguese: proporção Romanian: proporţie Russian: пропорция Slovak: pomer, podiel Slovenian: razmerje Swedish: proportion Turkish: oran, nisbet Copyright© 1988-2007 owned by Ubaldo Pernigo, please contact: [email protected] Licenza di questo documento: “GNU Free Documentation License". GNU Free Documentation License Versione 1.1, Marzo 2000 - Copyright (C) 2000 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA