Getal & Ruimte (13e editie) - 2 havo/vwo

'Rekenen met breuken'.

2 havo/vwo 1.3 Breuken vermenigvuldigen en delen

Rekenen met breuken (8)

opgave 1

Bereken.

1p

a

\(-\frac{1}{2} ⋅ -\frac{2}{7}\)

Vermenigvuldigen (1)
00du - Rekenen met breuken - basis - 108ms - data pool: #33020 (107ms)

a

\(-\frac{1}{2} ⋅ -\frac{2}{7} = \frac{2}{14} = \frac{1}{7}\)

1p

1p

b

\(-8\frac{1}{2} ⋅ -\frac{1}{9}\)

Vermenigvuldigen (2)
00dv - Rekenen met breuken - basis - 1ms - data pool: #33020 (107ms)

b

\(-8\frac{1}{2} ⋅ -\frac{1}{9} = -\frac{17}{2} ⋅ -\frac{1}{9} = \frac{17}{18}\)

1p

1p

c

\(-1\frac{1}{4} ⋅ 2\frac{1}{2}\)

Vermenigvuldigen (3)
00dw - Rekenen met breuken - basis - 0ms - data pool: #33020 (107ms)

c

\(-1\frac{1}{4} ⋅ 2\frac{1}{2} = -\frac{5}{4} ⋅ \frac{5}{2} = -\frac{25}{8} = -3\frac{1}{8}\)

1p

1p

d

\(1\frac{1}{2} ⋅ -3\)

Vermenigvuldigen (4)
00dx - Rekenen met breuken - basis - 0ms - data pool: #33020 (107ms)

d

\(1\frac{1}{2} ⋅ -3 = \frac{3}{2} ⋅ -\frac{3}{1} = -\frac{9}{2} = -4\frac{1}{2}\)

1p

opgave 2

Bereken.

1p

a

\(\frac{1}{4} : \frac{1}{3}\)

Delen (1)
00dy - Rekenen met breuken - basis - 140ms - data pool: #43684 (140ms)

a

\(\frac{1}{4} : \frac{1}{3} = \frac{1}{4} ⋅ \frac{3}{1} = \frac{3}{4}\)

1p

1p

b

\(2\frac{1}{5} : -\frac{7}{8}\)

Delen (2)
00dz - Rekenen met breuken - basis - 1ms - data pool: #43684 (140ms)

b

\(2\frac{1}{5} : -\frac{7}{8} = \frac{11}{5} : -\frac{7}{8} = \frac{11}{5} ⋅ -\frac{8}{7} = -\frac{88}{35} = -2\frac{18}{35}\)

1p

1p

c

\(-1\frac{1}{3} : -3\frac{3}{5}\)

Delen (3)
00e0 - Rekenen met breuken - basis - 0ms - data pool: #43684 (140ms)

c

\(-1\frac{1}{3} : -3\frac{3}{5} = -\frac{4}{3} : -\frac{18}{5} = -\frac{4}{3} ⋅ -\frac{5}{18} = \frac{20}{54} = \frac{10}{27}\)

1p

1p

d

\(-\frac{4}{9} : 4\)

Delen (4)
00e1 - Rekenen met breuken - basis - 0ms - data pool: #43684 (140ms)

d

\(-\frac{4}{9} : 4 = -\frac{4}{9} : \frac{4}{1} = -\frac{4}{9} ⋅ \frac{1}{4} = -\frac{4}{36} = -\frac{1}{9}\)

1p
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