Rekenen met breuken
04 - 12 oefeningen
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Vermenigvuldigen (1)
00du - basis - data pool: #33020 (199ms)
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Bereken. 1p a \(\frac{1}{3}⋅-\frac{6}{7}\) |
a \(\frac{1}{3}⋅-\frac{6}{7}=-\frac{6}{21}=-\frac{2}{7}\) 1p |
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Vermenigvuldigen (2)
00dv - basis - data pool: #33020 (199ms)
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Bereken. 1p a \(-\frac{2}{5}⋅-3\frac{3}{5}\) |
a \(-\frac{2}{5}⋅-3\frac{3}{5}=-\frac{2}{5}⋅-\frac{18}{5}=\frac{36}{25}=1\frac{11}{25}\) 1p |
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Vermenigvuldigen (3)
00dw - basis - data pool: #33020 (199ms)
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Bereken. 1p a \(1\frac{3}{5}⋅2\frac{3}{4}\) |
a \(1\frac{3}{5}⋅2\frac{3}{4}=\frac{8}{5}⋅\frac{11}{4}=\frac{88}{20}=\frac{22}{5}=4\frac{2}{5}\) 1p |
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Vermenigvuldigen (4)
00dx - basis - data pool: #33020 (199ms)
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Bereken. 1p a \(3⋅\frac{1}{8}\) |
a \(3⋅\frac{1}{8}=\frac{3}{1}⋅\frac{1}{8}=\frac{3}{8}\) 1p |
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Delen (1)
00dy - basis - data pool: #43684 (169ms)
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Bereken. 1p a \(\frac{1}{2}:-\frac{3}{5}\) |
a \(\frac{1}{2}:-\frac{3}{5}=\frac{1}{2}⋅-\frac{5}{3}=-\frac{5}{6}\) 1p |
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Delen (2)
00dz - basis - data pool: #43684 (169ms)
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Bereken. 1p a \(-2\frac{3}{8}:-\frac{1}{3}\) |
a \(-2\frac{3}{8}:-\frac{1}{3}=-\frac{19}{8}:-\frac{1}{3}=-\frac{19}{8}⋅-\frac{3}{1}=\frac{57}{8}=7\frac{1}{8}\) 1p |
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Delen (3)
00e0 - basis - data pool: #43684 (169ms)
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Bereken. 1p a \(3\frac{1}{3}:-3\frac{2}{3}\) |
a \(3\frac{1}{3}:-3\frac{2}{3}=\frac{10}{3}:-\frac{11}{3}=\frac{10}{3}⋅-\frac{3}{11}=-\frac{30}{33}=-\frac{10}{11}\) 1p |
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Delen (4)
00e1 - basis - data pool: #43684 (169ms)
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Bereken. 1p a \(-3:-4\frac{2}{3}\) |
a \(-3:-4\frac{2}{3}=-\frac{3}{1}:-\frac{14}{3}=-\frac{3}{1}⋅-\frac{3}{14}=\frac{9}{14}\) 1p |
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Optellen (1)
00dq - basis - data pool: #40460 (148ms)
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Bereken. 1p a \(1\frac{3}{7}-\frac{6}{7}\) |
a \(1\frac{3}{7}-\frac{6}{7}=\frac{10}{7}-\frac{6}{7}=\frac{4}{7}\) 1p |
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Optellen (2)
00dr - basis - data pool: #40460 (148ms)
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Bereken. 1p a \(-\frac{3}{8}-\frac{8}{9}\) |
a \(-\frac{3}{8}-\frac{8}{9}={-27 \over 72}-{64 \over 72}=-\frac{91}{72}=-1\frac{19}{72}\) 1p |
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Optellen (3)
00ds - basis - data pool: #40460 (148ms)
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Bereken. 1p a \(-\frac{1}{2}-\frac{5}{6}\) |
a \(-\frac{1}{2}-\frac{5}{6}={-3 \over 6}-{5 \over 6}=-\frac{8}{6}=-\frac{4}{3}=-1\frac{1}{3}\) 1p |
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Optellen (4)
00dt - basis - data pool: #40460 (148ms)
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Bereken. 1p a \(1\frac{5}{9}-2\frac{1}{6}\) |
a \(1\frac{5}{9}-2\frac{1}{6}=\frac{14}{9}-\frac{13}{6}={28 \over 18}-{39 \over 18}=-\frac{11}{18}\) 1p |