1.1 Flashcards

rationale getallen

1
Q

Volgorde van bewerkingen

A
  1. haakjes
  2. machten en vkw’s
  3. vermenigvuldigen en delen
  4. optellen en afrekken
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2
Q

regel breuken optellen of aftrekken

A

-> op gelijke noemers zetten

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3
Q

regel breuken delen

A

vermenigvuldigen met het omgekeerde
vb: 7/2 : 3/7 –> 7/2 . 7/3

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4
Q

distributiviteit en gemeenschappelijke factor afzonderen in symbolen

A

∀ a, b, c ∈ R : a . ( b + c ) = a . b + a . c

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5
Q

merkwaardig product:
(a + b)² = ?

A

a² + 2ab +b²

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6
Q

merkwaardig product:
(a - b)² = ?

A

a² - 2ab + b²

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7
Q

merkwaardig product:
(a - b) . (a + b) = ?

A

a² -b²

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8
Q

A

promille ( op duizend)

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9
Q

begrensd (decimale vorm)

A

1,75 ( decimale vorm is eindig)

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10
Q

onbegrensd, zuiver repeterend (decimale vorm)

A

0,4444444444….. (decimale vorm is oneindig)

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11
Q

onbegrensd, gemengd repeterend (decimale vorm)

A

1,083333.. ( ‘08’ is het niet-repeterend deel)

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12
Q
A
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