II.1. Addieren und Subtrahieren: Unterschied zwischen den Versionen

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Version vom 6. Oktober 2011, 15:08 Uhr

 

II. Addition und Subtraktion natürlicher Zahlen:

1. Addieren und Subtrahieren - 2. Rechengesetze und Rechenvorteile - 3. Terme


Erklärung




Hier kannst du das Addieren besser verstehen, indem du mit den Schieberegler die Summanden veränderst.




Und hier kannst du das Subtrahieren besser verstehen, indem du mit den Schieberegler Minuend und Subtrahend veränderst.




  Aufgaben


Bewegt man sich am Zahlenstrahl nach links, so subtrahiert man. Bewegt man sich am Zahlenstrahl nach rechts, so addiert man. Demnach bewegt man sich bei 5-3 nach links und bei 5+3 nach rechts.

 

Rechne im Kopf!

1. Addiere!

122 + 9 =
23 + 64 =
70 + 39 =
71 + 97 =
40 + 23 =
46 + 108 =
65 + 95 =
48 + 89 =
109 + 66 =
118 + 64 =

Punkte: 0 / 0


1. Subtrahiere!

79 - 26 =
67 - 30 =
44 - 12 =
104 - 83 =
114 - 111 =
14 - 6 =
120 - 72 =
82 - 55 =
117 - 47 =
86 - 23 =

Punkte: 0 / 0


1. Addiere!

54 + 30 + 25 =
13 + 29 + 22 =
59 + 57 + 1 =
23 + 44 + 18 =
31 + 12 + 19 =
26 + 52 + 33 =
46 + 10 + 39 =
44 + 21 + 3 =
5 + 60 + 27 =
59 + 13 + 37 =

Punkte: 0 / 0


1. Subtrahiere!

35 - 9 - 11 =
53 - 39 - 4 =
17 - 4 - 3 =
52 - 5 - 7 =
40 - 16 - 6 =
60 - 22 - 27 =
20 - 6 - 10 =
30 - 2 - 10 =
51 - 29 - 15 =
87 - 17 - 23 =

Punkte: 0 / 0


1. Rechne!

34 + 17 - 1=
53 - 5 + 43 =
15 - 4 + 83 =
87 + 23 - 7 =
56 - 9 + 16 =

Punkte: 0 / 0


Für die Fleißigen

Wie viel ist 1010-101? (! 919) ( 909) (! 982)

Addiere 5777 zu 6845! (! 15622) (! 12672) ( 12622)


 


II. Addition und Subtraktion natürlicher Zahlen:

1. Addieren und Subtrahieren - 2. Rechengesetze und Rechenvorteile - 3. Terme
Von „http://rmg.zum.de/index.php?title=P-Seminar/Mathematik_2010-12/II.1._Addieren_und_Subtrahieren&oldid=43932“