Matematica. Imparare le moltiplicazioni per multipli di 10 e 100. Risposte. Nome:

1) If 5 3 = 15, than 500 3 = 1500 2) If 5 8 = 40, than 500 8 = 4000 3) If 10 1 = 10, than 100 1 = 100 4) If 1 5 = 5, than 10 5 = 50 5) If 10 6 = 60, than 100 6 = 600 6) If 2 4 = 8, than 20 4 = 80 7) If 3 3 = 9, than 30 3 = 90 8) If 2 7 = 14, than 200 7 = 1400 9) If 2 10 = 20, than 20 10 = 200 10) If 1 10 = 10, than 10 10 = 100 11) If 2 1 = 2, than 2 10 = 20 12) If 5 4 = 20, than 5 400 = 2000 13) If 8 3 = 24, than 8 300 = 2400 14) If 3 4 = 12, than 3 40 = 120 15) If 5 10 = 50, than 5 1000 = 5000 16) If 8 2 = 16, than 8 20 = 160 17) If 5 1 = 5, than 5 100 = 500 18) If 2 3 = 6, than 2 300 = 600 19) If 7 9 = 63, than 7 90 = 630 20) If 9 9 = 81, than 9 900 = 8100 1 1. 1.500 2. 4.000 3. 100 4. 50 5. 600 6. 80 7. 90 8. 1.400 9. 200 10. 100 11. 20 12. 2.000 13. 2.400 14. 120 15. 5.000 16. 160 17. 500 18. 600 19. 630 20. 8.100

1) If 5 3 = 15, than 500 3 = 1500 2) If 5 8 = 40, than 500 8 = 4000 3) If 10 1 = 10, than 100 1 = 100 4) If 1 5 = 5, than 10 5 = 50 5) If 10 6 = 60, than 100 6 = 600 6) If 2 4 = 8, than 20 4 = 80 7) If 3 3 = 9, than 30 3 = 90 8) If 2 7 = 14, than 200 7 = 1400 9) If 2 10 = 20, than 20 10 = 200 10) If 1 10 = 10, than 10 10 = 100 11) If 2 1 = 2, than 2 10 = 20 12) If 5 4 = 20, than 5 400 = 2000 13) If 8 3 = 24, than 8 300 = 2400 14) If 3 4 = 12, than 3 40 = 120 15) If 5 10 = 50, than 5 1000 = 5000 16) If 8 2 = 16, than 8 20 = 160 17) If 5 1 = 5, than 5 100 = 500 18) If 2 3 = 6, than 2 300 = 600 19) If 7 9 = 63, than 7 90 = 630 20) If 9 9 = 81, than 9 900 = 8100 1 Soluzioni 1. 1.500 2. 4.000 3. 100 4. 50 5. 600 6. 80 7. 90 8. 1.400 9. 200 10. 100 11. 20 12. 2.000 13. 2.400 14. 120 15. 5.000 16. 160 17. 500 18. 600 19. 630 20. 8.100

1) If 7 5 = 35, than 700 5 = 3500 2) If 5 8 = 40, than 500 8 = 4000 3) If 9 10 = 90, than 900 10 = 9000 4) If 3 3 = 9, than 30 3 = 90 5) If 3 2 = 6, than 300 2 = 600 6) If 1 1 = 1, than 10 1 = 10 7) If 9 2 = 18, than 90 2 = 180 8) If 8 2 = 16, than 800 2 = 1600 9) If 4 9 = 36, than 40 9 = 360 10) If 7 1 = 7, than 70 1 = 70 11) If 8 4 = 32, than 8 40 = 320 12) If 7 7 = 49, than 7 700 = 4900 13) If 7 4 = 28, than 7 400 = 2800 14) If 10 6 = 60, than 10 600 = 6000 15) If 6 6 = 36, than 6 60 = 360 16) If 1 5 = 5, than 1 50 = 50 17) If 8 3 = 24, than 8 300 = 2400 18) If 2 4 = 8, than 2 40 = 80 19) If 4 6 = 24, than 4 60 = 240 20) If 3 8 = 24, than 3 800 = 2400 2 1. 3.500 2. 4.000 3. 9.000 4. 90 5. 600 6. 10 7. 180 8. 1.600 9. 360 10. 70 11. 320 12. 4.900 13. 2.800 14. 6.000 15. 360 16. 50 17. 2.400 18. 80 19. 240 20. 2.400

1) If 7 5 = 35, than 700 5 = 3500 2) If 5 8 = 40, than 500 8 = 4000 3) If 9 10 = 90, than 900 10 = 9000 4) If 3 3 = 9, than 30 3 = 90 5) If 3 2 = 6, than 300 2 = 600 6) If 1 1 = 1, than 10 1 = 10 7) If 9 2 = 18, than 90 2 = 180 8) If 8 2 = 16, than 800 2 = 1600 9) If 4 9 = 36, than 40 9 = 360 10) If 7 1 = 7, than 70 1 = 70 11) If 8 4 = 32, than 8 40 = 320 12) If 7 7 = 49, than 7 700 = 4900 13) If 7 4 = 28, than 7 400 = 2800 14) If 10 6 = 60, than 10 600 = 6000 15) If 6 6 = 36, than 6 60 = 360 16) If 1 5 = 5, than 1 50 = 50 17) If 8 3 = 24, than 8 300 = 2400 18) If 2 4 = 8, than 2 40 = 80 19) If 4 6 = 24, than 4 60 = 240 20) If 3 8 = 24, than 3 800 = 2400 2 Soluzioni 1. 3.500 2. 4.000 3. 9.000 4. 90 5. 600 6. 10 7. 180 8. 1.600 9. 360 10. 70 11. 320 12. 4.900 13. 2.800 14. 6.000 15. 360 16. 50 17. 2.400 18. 80 19. 240 20. 2.400

1) If 10 6 = 60, than 100 6 = 600 2) If 2 5 = 10, than 20 5 = 100 3) If 5 10 = 50, than 50 10 = 500 4) If 2 9 = 18, than 20 9 = 180 5) If 3 2 = 6, than 300 2 = 600 6) If 10 1 = 10, than 1000 1 = 1000 7) If 10 5 = 50, than 100 5 = 500 8) If 9 10 = 90, than 90 10 = 900 9) If 9 7 = 63, than 90 7 = 630 10) If 9 4 = 36, than 900 4 = 3600 11) If 8 2 = 16, than 8 200 = 1600 12) If 6 3 = 18, than 6 30 = 180 13) If 8 7 = 56, than 8 700 = 5600 14) If 7 3 = 21, than 7 300 = 2100 15) If 7 8 = 56, than 7 800 = 5600 16) If 6 1 = 6, than 6 100 = 600 17) If 4 1 = 4, than 4 100 = 400 18) If 9 3 = 27, than 9 300 = 2700 19) If 1 6 = 6, than 1 60 = 60 20) If 6 9 = 54, than 6 90 = 540 3 1. 600 2. 100 3. 500 4. 180 5. 600 6. 1.000 7. 500 8. 900 9. 630 10. 3.600 11. 1.600 12. 180 13. 5.600 14. 2.100 15. 5.600 16. 600 17. 400 18. 2.700 19. 60 20. 540

1) If 10 6 = 60, than 100 6 = 600 2) If 2 5 = 10, than 20 5 = 100 3) If 5 10 = 50, than 50 10 = 500 4) If 2 9 = 18, than 20 9 = 180 5) If 3 2 = 6, than 300 2 = 600 6) If 10 1 = 10, than 1000 1 = 1000 7) If 10 5 = 50, than 100 5 = 500 8) If 9 10 = 90, than 90 10 = 900 9) If 9 7 = 63, than 90 7 = 630 10) If 9 4 = 36, than 900 4 = 3600 11) If 8 2 = 16, than 8 200 = 1600 12) If 6 3 = 18, than 6 30 = 180 13) If 8 7 = 56, than 8 700 = 5600 14) If 7 3 = 21, than 7 300 = 2100 15) If 7 8 = 56, than 7 800 = 5600 16) If 6 1 = 6, than 6 100 = 600 17) If 4 1 = 4, than 4 100 = 400 18) If 9 3 = 27, than 9 300 = 2700 19) If 1 6 = 6, than 1 60 = 60 20) If 6 9 = 54, than 6 90 = 540 3 Soluzioni 1. 600 2. 100 3. 500 4. 180 5. 600 6. 1.000 7. 500 8. 900 9. 630 10. 3.600 11. 1.600 12. 180 13. 5.600 14. 2.100 15. 5.600 16. 600 17. 400 18. 2.700 19. 60 20. 540

1) If 2 5 = 10, than 200 5 = 1000 2) If 1 6 = 6, than 10 6 = 60 3) If 3 9 = 27, than 30 9 = 270 4) If 3 8 = 24, than 300 8 = 2400 5) If 5 7 = 35, than 50 7 = 350 6) If 4 7 = 28, than 400 7 = 2800 7) If 2 4 = 8, than 20 4 = 80 8) If 4 6 = 24, than 400 6 = 2400 9) If 8 4 = 32, than 800 4 = 3200 10) If 8 8 = 64, than 80 8 = 640 11) If 6 8 = 48, than 6 800 = 4800 12) If 4 4 = 16, than 4 40 = 160 13) If 10 3 = 30, than 10 300 = 3000 14) If 5 9 = 45, than 5 90 = 450 15) If 1 3 = 3, than 1 300 = 300 16) If 10 2 = 20, than 10 20 = 200 17) If 6 3 = 18, than 6 300 = 1800 18) If 2 7 = 14, than 2 700 = 1400 19) If 6 7 = 42, than 6 70 = 420 20) If 9 5 = 45, than 9 50 = 450 4 1. 1.000 2. 60 3. 270 4. 2.400 5. 350 6. 2.800 7. 80 8. 2.400 9. 3.200 10. 640 11. 4.800 12. 160 13. 3.000 14. 450 15. 300 16. 200 17. 1.800 18. 1.400 19. 420 20. 450

1) If 2 5 = 10, than 200 5 = 1000 2) If 1 6 = 6, than 10 6 = 60 3) If 3 9 = 27, than 30 9 = 270 4) If 3 8 = 24, than 300 8 = 2400 5) If 5 7 = 35, than 50 7 = 350 6) If 4 7 = 28, than 400 7 = 2800 7) If 2 4 = 8, than 20 4 = 80 8) If 4 6 = 24, than 400 6 = 2400 9) If 8 4 = 32, than 800 4 = 3200 10) If 8 8 = 64, than 80 8 = 640 11) If 6 8 = 48, than 6 800 = 4800 12) If 4 4 = 16, than 4 40 = 160 13) If 10 3 = 30, than 10 300 = 3000 14) If 5 9 = 45, than 5 90 = 450 15) If 1 3 = 3, than 1 300 = 300 16) If 10 2 = 20, than 10 20 = 200 17) If 6 3 = 18, than 6 300 = 1800 18) If 2 7 = 14, than 2 700 = 1400 19) If 6 7 = 42, than 6 70 = 420 20) If 9 5 = 45, than 9 50 = 450 4 Soluzioni 1. 1.000 2. 60 3. 270 4. 2.400 5. 350 6. 2.800 7. 80 8. 2.400 9. 3.200 10. 640 11. 4.800 12. 160 13. 3.000 14. 450 15. 300 16. 200 17. 1.800 18. 1.400 19. 420 20. 450

1) If 1 1 = 1, than 100 1 = 100 2) If 10 5 = 50, than 100 5 = 500 3) If 5 9 = 45, than 500 9 = 4500 4) If 10 7 = 70, than 100 7 = 700 5) If 2 9 = 18, than 200 9 = 1800 6) If 1 7 = 7, than 10 7 = 70 7) If 5 10 = 50, than 50 10 = 500 8) If 9 5 = 45, than 90 5 = 450 9) If 9 3 = 27, than 90 3 = 270 10) If 4 8 = 32, than 400 8 = 3200 11) If 8 1 = 8, than 8 100 = 800 12) If 1 8 = 8, than 1 800 = 800 13) If 4 10 = 40, than 4 1000 = 4000 14) If 1 10 = 10, than 1 1000 = 1000 15) If 6 6 = 36, than 6 60 = 360 16) If 6 5 = 30, than 6 50 = 300 17) If 4 5 = 20, than 4 50 = 200 18) If 8 9 = 72, than 8 900 = 7200 19) If 7 3 = 21, than 7 30 = 210 20) If 1 3 = 3, than 1 300 = 300 5 1. 100 2. 500 3. 4.500 4. 700 5. 1.800 6. 70 7. 500 8. 450 9. 270 10. 3.200 11. 800 12. 800 13. 4.000 14. 1.000 15. 360 16. 300 17. 200 18. 7.200 19. 210 20. 300

1) If 1 1 = 1, than 100 1 = 100 2) If 10 5 = 50, than 100 5 = 500 3) If 5 9 = 45, than 500 9 = 4500 4) If 10 7 = 70, than 100 7 = 700 5) If 2 9 = 18, than 200 9 = 1800 6) If 1 7 = 7, than 10 7 = 70 7) If 5 10 = 50, than 50 10 = 500 8) If 9 5 = 45, than 90 5 = 450 9) If 9 3 = 27, than 90 3 = 270 10) If 4 8 = 32, than 400 8 = 3200 11) If 8 1 = 8, than 8 100 = 800 12) If 1 8 = 8, than 1 800 = 800 13) If 4 10 = 40, than 4 1000 = 4000 14) If 1 10 = 10, than 1 1000 = 1000 15) If 6 6 = 36, than 6 60 = 360 16) If 6 5 = 30, than 6 50 = 300 17) If 4 5 = 20, than 4 50 = 200 18) If 8 9 = 72, than 8 900 = 7200 19) If 7 3 = 21, than 7 30 = 210 20) If 1 3 = 3, than 1 300 = 300 5 Soluzioni 1. 100 2. 500 3. 4.500 4. 700 5. 1.800 6. 70 7. 500 8. 450 9. 270 10. 3.200 11. 800 12. 800 13. 4.000 14. 1.000 15. 360 16. 300 17. 200 18. 7.200 19. 210 20. 300

1) If 6 9 = 54, than 60 9 = 540 2) If 1 8 = 8, than 10 8 = 80 3) If 4 5 = 20, than 40 5 = 200 4) If 6 4 = 24, than 60 4 = 240 5) If 9 1 = 9, than 900 1 = 900 6) If 3 2 = 6, than 300 2 = 600 7) If 3 9 = 27, than 300 9 = 2700 8) If 8 1 = 8, than 800 1 = 800 9) If 10 7 = 70, than 100 7 = 700 10) If 7 6 = 42, than 70 6 = 420 11) If 3 6 = 18, than 3 60 = 180 12) If 6 7 = 42, than 6 70 = 420 13) If 6 3 = 18, than 6 300 = 1800 14) If 10 8 = 80, than 10 800 = 8000 15) If 2 1 = 2, than 2 100 = 200 16) If 8 9 = 72, than 8 90 = 720 17) If 5 7 = 35, than 5 700 = 3500 18) If 1 4 = 4, than 1 400 = 400 19) If 8 3 = 24, than 8 300 = 2400 20) If 10 4 = 40, than 10 40 = 400 6 1. 540 2. 80 3. 200 4. 240 5. 900 6. 600 7. 2.700 8. 800 9. 700 10. 420 11. 180 12. 420 13. 1.800 14. 8.000 15. 200 16. 720 17. 3.500 18. 400 19. 2.400 20. 400

1) If 6 9 = 54, than 60 9 = 540 2) If 1 8 = 8, than 10 8 = 80 3) If 4 5 = 20, than 40 5 = 200 4) If 6 4 = 24, than 60 4 = 240 5) If 9 1 = 9, than 900 1 = 900 6) If 3 2 = 6, than 300 2 = 600 7) If 3 9 = 27, than 300 9 = 2700 8) If 8 1 = 8, than 800 1 = 800 9) If 10 7 = 70, than 100 7 = 700 10) If 7 6 = 42, than 70 6 = 420 11) If 3 6 = 18, than 3 60 = 180 12) If 6 7 = 42, than 6 70 = 420 13) If 6 3 = 18, than 6 300 = 1800 14) If 10 8 = 80, than 10 800 = 8000 15) If 2 1 = 2, than 2 100 = 200 16) If 8 9 = 72, than 8 90 = 720 17) If 5 7 = 35, than 5 700 = 3500 18) If 1 4 = 4, than 1 400 = 400 19) If 8 3 = 24, than 8 300 = 2400 20) If 10 4 = 40, than 10 40 = 400 6 Soluzioni 1. 540 2. 80 3. 200 4. 240 5. 900 6. 600 7. 2.700 8. 800 9. 700 10. 420 11. 180 12. 420 13. 1.800 14. 8.000 15. 200 16. 720 17. 3.500 18. 400 19. 2.400 20. 400

1) If 6 8 = 48, than 60 8 = 480 2) If 10 1 = 10, than 1000 1 = 1000 3) If 4 5 = 20, than 40 5 = 200 4) If 2 6 = 12, than 200 6 = 1200 5) If 7 9 = 63, than 700 9 = 6300 6) If 10 9 = 90, than 100 9 = 900 7) If 5 6 = 30, than 500 6 = 3000 8) If 1 4 = 4, than 100 4 = 400 9) If 3 6 = 18, than 30 6 = 180 10) If 7 8 = 56, than 70 8 = 560 11) If 10 7 = 70, than 10 70 = 700 12) If 1 8 = 8, than 1 80 = 80 13) If 7 6 = 42, than 7 600 = 4200 14) If 6 5 = 30, than 6 50 = 300 15) If 2 1 = 2, than 2 100 = 200 16) If 9 1 = 9, than 9 100 = 900 17) If 1 10 = 10, than 1 100 = 100 18) If 10 5 = 50, than 10 50 = 500 19) If 5 3 = 15, than 5 300 = 1500 20) If 6 1 = 6, than 6 100 = 600 7 1. 480 2. 1.000 3. 200 4. 1.200 5. 6.300 6. 900 7. 3.000 8. 400 9. 180 10. 560 11. 700 12. 80 13. 4.200 14. 300 15. 200 16. 900 17. 100 18. 500 19. 1.500 20. 600

1) If 6 8 = 48, than 60 8 = 480 2) If 10 1 = 10, than 1000 1 = 1000 3) If 4 5 = 20, than 40 5 = 200 4) If 2 6 = 12, than 200 6 = 1200 5) If 7 9 = 63, than 700 9 = 6300 6) If 10 9 = 90, than 100 9 = 900 7) If 5 6 = 30, than 500 6 = 3000 8) If 1 4 = 4, than 100 4 = 400 9) If 3 6 = 18, than 30 6 = 180 10) If 7 8 = 56, than 70 8 = 560 11) If 10 7 = 70, than 10 70 = 700 12) If 1 8 = 8, than 1 80 = 80 13) If 7 6 = 42, than 7 600 = 4200 14) If 6 5 = 30, than 6 50 = 300 15) If 2 1 = 2, than 2 100 = 200 16) If 9 1 = 9, than 9 100 = 900 17) If 1 10 = 10, than 1 100 = 100 18) If 10 5 = 50, than 10 50 = 500 19) If 5 3 = 15, than 5 300 = 1500 20) If 6 1 = 6, than 6 100 = 600 7 Soluzioni 1. 480 2. 1.000 3. 200 4. 1.200 5. 6.300 6. 900 7. 3.000 8. 400 9. 180 10. 560 11. 700 12. 80 13. 4.200 14. 300 15. 200 16. 900 17. 100 18. 500 19. 1.500 20. 600

1) If 4 9 = 36, than 40 9 = 360 2) If 2 2 = 4, than 200 2 = 400 3) If 8 7 = 56, than 80 7 = 560 4) If 6 1 = 6, than 600 1 = 600 5) If 10 1 = 10, than 1000 1 = 1000 6) If 3 7 = 21, than 30 7 = 210 7) If 2 4 = 8, than 20 4 = 80 8) If 9 1 = 9, than 900 1 = 900 9) If 1 7 = 7, than 100 7 = 700 10) If 2 7 = 14, than 200 7 = 1400 11) If 4 5 = 20, than 4 50 = 200 12) If 3 9 = 27, than 3 900 = 2700 13) If 7 4 = 28, than 7 40 = 280 14) If 7 10 = 70, than 7 100 = 700 15) If 5 6 = 30, than 5 600 = 3000 16) If 8 2 = 16, than 8 200 = 1600 17) If 6 4 = 24, than 6 400 = 2400 18) If 6 5 = 30, than 6 50 = 300 19) If 3 1 = 3, than 3 10 = 30 20) If 7 2 = 14, than 7 20 = 140 8 1. 360 2. 400 3. 560 4. 600 5. 1.000 6. 210 7. 80 8. 900 9. 700 10. 1.400 11. 200 12. 2.700 13. 280 14. 700 15. 3.000 16. 1.600 17. 2.400 18. 300 19. 30 20. 140

1) If 4 9 = 36, than 40 9 = 360 2) If 2 2 = 4, than 200 2 = 400 3) If 8 7 = 56, than 80 7 = 560 4) If 6 1 = 6, than 600 1 = 600 5) If 10 1 = 10, than 1000 1 = 1000 6) If 3 7 = 21, than 30 7 = 210 7) If 2 4 = 8, than 20 4 = 80 8) If 9 1 = 9, than 900 1 = 900 9) If 1 7 = 7, than 100 7 = 700 10) If 2 7 = 14, than 200 7 = 1400 11) If 4 5 = 20, than 4 50 = 200 12) If 3 9 = 27, than 3 900 = 2700 13) If 7 4 = 28, than 7 40 = 280 14) If 7 10 = 70, than 7 100 = 700 15) If 5 6 = 30, than 5 600 = 3000 16) If 8 2 = 16, than 8 200 = 1600 17) If 6 4 = 24, than 6 400 = 2400 18) If 6 5 = 30, than 6 50 = 300 19) If 3 1 = 3, than 3 10 = 30 20) If 7 2 = 14, than 7 20 = 140 8 Soluzioni 1. 360 2. 400 3. 560 4. 600 5. 1.000 6. 210 7. 80 8. 900 9. 700 10. 1.400 11. 200 12. 2.700 13. 280 14. 700 15. 3.000 16. 1.600 17. 2.400 18. 300 19. 30 20. 140

1) If 2 10 = 20, than 200 10 = 2000 2) If 5 5 = 25, than 50 5 = 250 3) If 9 10 = 90, than 900 10 = 9000 4) If 3 6 = 18, than 30 6 = 180 5) If 5 2 = 10, than 50 2 = 100 6) If 7 2 = 14, than 700 2 = 1400 7) If 3 5 = 15, than 300 5 = 1500 8) If 6 10 = 60, than 60 10 = 600 9) If 9 3 = 27, than 90 3 = 270 10) If 6 9 = 54, than 600 9 = 5400 11) If 6 4 = 24, than 6 400 = 2400 12) If 5 6 = 30, than 5 600 = 3000 13) If 1 2 = 2, than 1 200 = 200 14) If 10 2 = 20, than 10 20 = 200 15) If 8 3 = 24, than 8 30 = 240 16) If 8 4 = 32, than 8 400 = 3200 17) If 2 7 = 14, than 2 70 = 140 18) If 8 10 = 80, than 8 100 = 800 19) If 2 8 = 16, than 2 800 = 1600 20) If 6 6 = 36, than 6 600 = 3600 9 1. 2.000 2. 250 3. 9.000 4. 180 5. 100 6. 1.400 7. 1.500 8. 600 9. 270 10. 5.400 11. 2.400 12. 3.000 13. 200 14. 200 15. 240 16. 3.200 17. 140 18. 800 19. 1.600 20. 3.600

1) If 2 10 = 20, than 200 10 = 2000 2) If 5 5 = 25, than 50 5 = 250 3) If 9 10 = 90, than 900 10 = 9000 4) If 3 6 = 18, than 30 6 = 180 5) If 5 2 = 10, than 50 2 = 100 6) If 7 2 = 14, than 700 2 = 1400 7) If 3 5 = 15, than 300 5 = 1500 8) If 6 10 = 60, than 60 10 = 600 9) If 9 3 = 27, than 90 3 = 270 10) If 6 9 = 54, than 600 9 = 5400 11) If 6 4 = 24, than 6 400 = 2400 12) If 5 6 = 30, than 5 600 = 3000 13) If 1 2 = 2, than 1 200 = 200 14) If 10 2 = 20, than 10 20 = 200 15) If 8 3 = 24, than 8 30 = 240 16) If 8 4 = 32, than 8 400 = 3200 17) If 2 7 = 14, than 2 70 = 140 18) If 8 10 = 80, than 8 100 = 800 19) If 2 8 = 16, than 2 800 = 1600 20) If 6 6 = 36, than 6 600 = 3600 9 Soluzioni 1. 2.000 2. 250 3. 9.000 4. 180 5. 100 6. 1.400 7. 1.500 8. 600 9. 270 10. 5.400 11. 2.400 12. 3.000 13. 200 14. 200 15. 240 16. 3.200 17. 140 18. 800 19. 1.600 20. 3.600

1) If 4 9 = 36, than 40 9 = 360 2) If 1 9 = 9, than 10 9 = 90 3) If 2 4 = 8, than 200 4 = 800 4) If 5 6 = 30, than 50 6 = 300 5) If 4 4 = 16, than 40 4 = 160 6) If 10 7 = 70, than 1000 7 = 7000 7) If 7 8 = 56, than 700 8 = 5600 8) If 1 1 = 1, than 100 1 = 100 9) If 6 10 = 60, than 60 10 = 600 10) If 10 8 = 80, than 100 8 = 800 11) If 8 10 = 80, than 8 1000 = 8000 12) If 3 6 = 18, than 3 600 = 1800 13) If 7 3 = 21, than 7 30 = 210 14) If 2 8 = 16, than 2 800 = 1600 15) If 7 9 = 63, than 7 90 = 630 16) If 6 1 = 6, than 6 100 = 600 17) If 6 4 = 24, than 6 400 = 2400 18) If 7 1 = 7, than 7 10 = 70 19) If 9 2 = 18, than 9 20 = 180 20) If 1 4 = 4, than 1 400 = 400 10 1. 360 2. 90 3. 800 4. 300 5. 160 6. 7.000 7. 5.600 8. 100 9. 600 10. 800 11. 8.000 12. 1.800 13. 210 14. 1.600 15. 630 16. 600 17. 2.400 18. 70 19. 180 20. 400

1) If 4 9 = 36, than 40 9 = 360 2) If 1 9 = 9, than 10 9 = 90 3) If 2 4 = 8, than 200 4 = 800 4) If 5 6 = 30, than 50 6 = 300 5) If 4 4 = 16, than 40 4 = 160 6) If 10 7 = 70, than 1000 7 = 7000 7) If 7 8 = 56, than 700 8 = 5600 8) If 1 1 = 1, than 100 1 = 100 9) If 6 10 = 60, than 60 10 = 600 10) If 10 8 = 80, than 100 8 = 800 11) If 8 10 = 80, than 8 1000 = 8000 12) If 3 6 = 18, than 3 600 = 1800 13) If 7 3 = 21, than 7 30 = 210 14) If 2 8 = 16, than 2 800 = 1600 15) If 7 9 = 63, than 7 90 = 630 16) If 6 1 = 6, than 6 100 = 600 17) If 6 4 = 24, than 6 400 = 2400 18) If 7 1 = 7, than 7 10 = 70 19) If 9 2 = 18, than 9 20 = 180 20) If 1 4 = 4, than 1 400 = 400 10 Soluzioni 1. 360 2. 90 3. 800 4. 300 5. 160 6. 7.000 7. 5.600 8. 100 9. 600 10. 800 11. 8.000 12. 1.800 13. 210 14. 1.600 15. 630 16. 600 17. 2.400 18. 70 19. 180 20. 400