28332061
| Question | Answer |
| DECIMAL a FRACCIÓN: 3,5 2,48 0,031 | 3,5x10/10 = 35/10 = 7/2 2,48x100/100 = 248/100 = 62/25 0,031x1.000 = 31/1.000 |
| DECIMAL PERIÓDICO: 25,[3]... 4,1[5]... 0,[27]... | 25,[3]x(10–1)/9=228/9=76/3 4,1[5]x(100-10)/90=374/90=187/45 0,[27]x(100–1)/99=27/99=3/11 |
| FRACCIÓN a DECIMAL: (DIVIDIENDO): 1/4 2/3 10/7 | 1/4 = 0,25 2/3 = 0,[6]... 15/7 = 2,[142857] |
| SUMA: 2/3 + 4/5 5/3 + 1/4 + 2/5 | (10+12)/15 = 22/15 (5x4x5+1x3x5+2x3x4)/(3x4x5) = = (100+15+24)/60 = 139/60 |
| RESTA: 3/4–1/3 3/2–1/4–2/5 | (3x3–4x1)/(4x3) = 5/12 (3x4x5–1x2x5–2x2x4)/(2x4x5) = = (60–10–16)/40 = 34/40 = 17/20 |
| MULTIPLICACIÓN: 2/3 x 1/5 | (2x1)/(3x5) = 2/15 |
| DIVISIÓN: (3/5) / (1/4) | (3/5) / (1/4) = (3/5) x (4/1) = = (3x4) / (5x1) = 12/5 |
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