Rechnen mit rationalen Zahlen

Mathematik · Klasse 7 · mittel

Klasse 7
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Minus mal Minus ergibt Plus. Punkt vor Strich gilt auch bei negativen Zahlen.

A Addieren und subtrahieren

  1. 8 - 11 = -3
  2. -11 - 12 =
  3. 10 - 5 =
  4. -2 - 7 =
  5. -7 + 0 =
  6. -10 - 5 =
  7. -9 - 9 =
  8. 6 - 1 =
  9. 5 - 6 =
  10. -11 - 6 =

B Multiplizieren

  1. -2 · (0) = 0
  2. 4 · (-8) =
  3. -5 · (4) =
  4. -11 · (-9) =
  5. 12 · (-6) =
  6. -3 · (-4) =
  7. -10 · (-7) =
  8. -9 · (10) =
  9. 4 · (-3) =
  10. -1 · (5) =

A Strichrechnung

  1. 8 - 11 = -3
  2. -11 - 12 = -23
  3. 10 - 5 = 5
  4. -2 - 7 = -9
  5. -7 + 0 = -7
  6. -10 - 5 = -15
  7. -9 - 9 = -18
  8. 6 - 1 = 5
  9. 5 - 6 = -1
  10. -11 - 6 = -17

B Punktrechnung

  1. -2 · (0) = 0
  2. 4 · (-8) = -32
  3. -5 · (4) = -20
  4. -11 · (-9) = 99
  5. 12 · (-6) = -72
  6. -3 · (-4) = 12
  7. -10 · (-7) = 70
  8. -9 · (10) = -90
  9. 4 · (-3) = -12
  10. -1 · (5) = -5

Minus mal Minus ergibt Plus. Punkt vor Strich gilt auch bei negativen Zahlen.

A Addieren und subtrahieren

  1. 1 - 24 = -23
  2. -15 + 13 =
  3. -5 + 7 =
  4. 4 - 30 =
  5. 1 - 18 =
  6. 29 - 7 =
  7. 13 - 27 =
  8. 18 - 20 =
  9. 12 - 27 =
  10. 26 - 11 =

B Multiplizieren

  1. -3 · (-18) = 54
  2. -29 · (11) =
  3. -30 · (25) =
  4. -24 · (28) =
  5. -23 · (-22) =
  6. -17 · (30) =
  7. 30 · (-15) =
  8. -11 · (14) =
  9. 11 · (-19) =
  10. -4 · (20) =

C Brüche mit Vorzeichen

  1. 2/5 + 1/2 = 9/10
  2. 4/7 + 4/5 =
  3. 5/10 + 5/8 =
  4. 6/10 + 6/7 =
  5. -4/8 + 3/7 =
  6. -2/6 + 1/3 =
  7. 5/6 + 2/6 =
  8. -5/7 + 5/10 =

A Strichrechnung

  1. 1 - 24 = -23
  2. -15 + 13 = -2
  3. -5 + 7 = 2
  4. 4 - 30 = -26
  5. 1 - 18 = -17
  6. 29 - 7 = 22
  7. 13 - 27 = -14
  8. 18 - 20 = -2
  9. 12 - 27 = -15
  10. 26 - 11 = 15

B Punktrechnung

  1. -3 · (-18) = 54
  2. -29 · (11) = -319
  3. -30 · (25) = -750
  4. -24 · (28) = -672
  5. -23 · (-22) = 506
  6. -17 · (30) = -510
  7. 30 · (-15) = -450
  8. -11 · (14) = -154
  9. 11 · (-19) = -209
  10. -4 · (20) = -80

C Brüche

  1. 2/5 + 1/2 = 9/10
  2. 4/7 + 4/5 = 48/35
  3. 5/10 + 5/8 = 90/80 = 9/8
  4. 6/10 + 6/7 = 102/70 = 51/35
  5. -4/8 + 3/7 = -4/56 = -1/14
  6. -2/6 + 1/3 = 0/18 = 0/1
  7. 5/6 + 2/6 = 42/36 = 7/6
  8. -5/7 + 5/10 = -15/70 = -3/14

Minus mal Minus ergibt Plus. Punkt vor Strich gilt auch bei negativen Zahlen.

A Addieren und subtrahieren

  1. -31 - 71 = -102
  2. 51 - 30 =
  3. -77 + 47 =
  4. 53 - 64 =
  5. 34 - 76 =
  6. -54 - 18 =
  7. 12 - 22 =
  8. -28 - 21 =
  9. 39 - 4 =
  10. 29 - 43 =

B Multiplizieren

  1. -43 · (57) = -2451
  2. 26 · (-39) =
  3. -45 · (8) =
  4. 46 · (-39) =
  5. -41 · (26) =
  6. -37 · (25) =
  7. -20 · (52) =
  8. -34 · (61) =
  9. -3 · (-16) =
  10. -26 · (35) =

C Brüche mit Vorzeichen

  1. -6/7 + 3/8 = -27/56
  2. 4/9 + 3/4 =
  3. 5/9 + 1/4 =
  4. 7/11 + 2/3 =
  5. -4/8 + 6/10 =
  6. -2/7 + 7/10 =
  7. -4/6 + 6/7 =
  8. 5/7 + 3/7 =

D Punkt vor Strich

  1. -1 + 6 · (-9) = -1 - 54 = -55
  2. 1 + 7 · (5) =
  3. -3 + 7 · (-8) =
  4. 7 + 6 · (6) =
  5. 3 + 3 · (-8) =
  6. 7 + 7 · (8) =

A Strichrechnung

  1. -31 - 71 = -102
  2. 51 - 30 = 21
  3. -77 + 47 = -30
  4. 53 - 64 = -11
  5. 34 - 76 = -42
  6. -54 - 18 = -72
  7. 12 - 22 = -10
  8. -28 - 21 = -49
  9. 39 - 4 = 35
  10. 29 - 43 = -14

B Punktrechnung

  1. -43 · (57) = -2451
  2. 26 · (-39) = -1014
  3. -45 · (8) = -360
  4. 46 · (-39) = -1794
  5. -41 · (26) = -1066
  6. -37 · (25) = -925
  7. -20 · (52) = -1040
  8. -34 · (61) = -2074
  9. -3 · (-16) = 48
  10. -26 · (35) = -910

C Brüche

  1. -6/7 + 3/8 = -27/56
  2. 4/9 + 3/4 = 43/36
  3. 5/9 + 1/4 = 29/36
  4. 7/11 + 2/3 = 43/33
  5. -4/8 + 6/10 = 8/80 = 1/10
  6. -2/7 + 7/10 = 29/70
  7. -4/6 + 6/7 = 8/42 = 4/21
  8. 5/7 + 3/7 = 56/49 = 8/7

D Punkt vor Strich

  1. -1 + 6 · (-9) = -1 - 54 = -55
  2. 1 + 7 · (5) = 1 + 35 = 36
  3. -3 + 7 · (-8) = -3 - 56 = -59
  4. 7 + 6 · (6) = 7 + 36 = 43
  5. 3 + 3 · (-8) = 3 - 24 = -21
  6. 7 + 7 · (8) = 7 + 56 = 63
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