Getal & Ruimte (13e editie) - 2 havo/vwo
'Rekenen met breuken'.
| 2 havo/vwo | 1.3 Breuken vermenigvuldigen en delen |
opgave 1Bereken. 1p a \(\frac{4}{5} ⋅ \frac{5}{9}\) Vermenigvuldigen (1) 00du - Rekenen met breuken - basis - 63ms - data pool: #33020 (62ms) a \(\frac{4}{5} ⋅ \frac{5}{9} = \frac{20}{45} = \frac{4}{9}\) 1p 1p b \(-\frac{5}{7} ⋅ -1\frac{5}{8}\) Vermenigvuldigen (2) 00dv - Rekenen met breuken - basis - 1ms - data pool: #33020 (62ms) b \(-\frac{5}{7} ⋅ -1\frac{5}{8} = -\frac{5}{7} ⋅ -\frac{13}{8} = \frac{65}{56} = 1\frac{9}{56}\) 1p 1p c \(-3\frac{1}{2} ⋅ 2\frac{4}{5}\) Vermenigvuldigen (3) 00dw - Rekenen met breuken - basis - 0ms - data pool: #33020 (62ms) c \(-3\frac{1}{2} ⋅ 2\frac{4}{5} = -\frac{7}{2} ⋅ \frac{14}{5} = -\frac{98}{10} = -\frac{49}{5} = -9\frac{4}{5}\) 1p 1p d \(-\frac{2}{7} ⋅ -7\) Vermenigvuldigen (4) 00dx - Rekenen met breuken - basis - 0ms - data pool: #33020 (62ms) d \(-\frac{2}{7} ⋅ -7 = -\frac{2}{7} ⋅ -\frac{7}{1} = \frac{14}{7} = \frac{2}{1} = 2\) 1p opgave 2Bereken. 1p a \(\frac{5}{8} : \frac{4}{5}\) Delen (1) 00dy - Rekenen met breuken - basis - 322ms - data pool: #43684 (322ms) a \(\frac{5}{8} : \frac{4}{5} = \frac{5}{8} ⋅ \frac{5}{4} = \frac{25}{32}\) 1p 1p b \(\frac{3}{4} : 1\frac{1}{9}\) Delen (2) 00dz - Rekenen met breuken - basis - 1ms - data pool: #43684 (322ms) b \(\frac{3}{4} : 1\frac{1}{9} = \frac{3}{4} : \frac{10}{9} = \frac{3}{4} ⋅ \frac{9}{10} = \frac{27}{40}\) 1p 1p c \(-9\frac{1}{2} : -7\frac{1}{2}\) Delen (3) 00e0 - Rekenen met breuken - basis - 0ms - data pool: #43684 (322ms) c \(-9\frac{1}{2} : -7\frac{1}{2} = -\frac{19}{2} : -\frac{15}{2} = -\frac{19}{2} ⋅ -\frac{2}{15} = \frac{38}{30} = \frac{19}{15} = 1\frac{4}{15}\) 1p 1p d \(-2\frac{2}{5} : -3\) Delen (4) 00e1 - Rekenen met breuken - basis - 0ms - data pool: #43684 (322ms) d \(-2\frac{2}{5} : -3 = -\frac{12}{5} : -\frac{3}{1} = -\frac{12}{5} ⋅ -\frac{1}{3} = \frac{12}{15} = \frac{4}{5}\) 1p |