www.Klassenarbeiten.de Seite 1
Klassenarbeit
Mathematik 9. Klasse Klammerrechnung
Block 1:
1.) 16a – (3b + 8c – 5a) – (b – 3c)= __________
2.) 3a – 4b – (-5a +7b) + (-9a – 10b) = __________
3.) – ab + 7a – 13 – (- 4ab + 8a – 25) + (- 8ab + a – 21) = __________
4.) 24a – [(13a- 8b + 2c) – (9a + 12b – 3c)] = ___________
5.) 37a + [22b – (17c + 12b – 11a) + 25c] – [18a – (7b – 3c)]= ______________
6.) 4xy – 8xz – {2yz – [3xy – (5xz + 6yz) + 7yz] – 2xy} = ___________
7.) a – {[(b – 3ab) – (a + 3ab)] – (6a – 3b)} = ______________
Block 2:
1.) (a + b) • (4x – 5y) – (a – b) • (5x + 3y) = ____________
2.) (2m + 4n) • (5a + 6b – 8c) + (3m + 4n) • (9a – 6b + 7c) = ___________
3.) (3a – 5b) • (6x – 7y + 9z) – (5x – 8y + 8z) • (4a – 5b) = ________________
4.) - 6.) nur ausklammern
4.) (4a – 2b) • (x + y) – (3a + 4b) • (x + y) = _________________
5.) (5m + 2n) • (x – y) + (3m + 2n) • (x – y) = _____________
6.) (15xy + 12bx) • (a – c) – (5bx + 10xy) • (a – c) = __________________
Je Aufgabe = 3 Punkte
Notenschlüssel: 39 – 36 = 1
35 – 31 = 2 Viel Erfolg!
30 – 25 = 3
24 – 18 = 4
17 – 10 = 5
09 – 00 = 6
Klassenarbeit
Mathematik 9. Klasse Klammerrechnung
Block 1:
1.) 16a – (3b + 8c – 5a) – (b – 3c)= __________
2.) 3a – 4b – (-5a +7b) + (-9a – 10b) = __________
3.) – ab + 7a – 13 – (- 4ab + 8a – 25) + (- 8ab + a – 21) = __________
4.) 24a – [(13a- 8b + 2c) – (9a + 12b – 3c)] = ___________
5.) 37a + [22b – (17c + 12b – 11a) + 25c] – [18a – (7b – 3c)]= ______________
6.) 4xy – 8xz – {2yz – [3xy – (5xz + 6yz) + 7yz] – 2xy} = ___________
7.) a – {[(b – 3ab) – (a + 3ab)] – (6a – 3b)} = ______________
Block 2:
1.) (a + b) • (4x – 5y) – (a – b) • (5x + 3y) = ____________
2.) (2m + 4n) • (5a + 6b – 8c) + (3m + 4n) • (9a – 6b + 7c) = ___________
3.) (3a – 5b) • (6x – 7y + 9z) – (5x – 8y + 8z) • (4a – 5b) = ________________
4.) - 6.) nur ausklammern
4.) (4a – 2b) • (x + y) – (3a + 4b) • (x + y) = _________________
5.) (5m + 2n) • (x – y) + (3m + 2n) • (x – y) = _____________
6.) (15xy + 12bx) • (a – c) – (5bx + 10xy) • (a – c) = __________________
Je Aufgabe = 3 Punkte
Notenschlüssel: 39 – 36 = 1
35 – 31 = 2 Viel Erfolg!
30 – 25 = 3
24 – 18 = 4
17 – 10 = 5
09 – 00 = 6
www.Klassenarbeiten.de Seite 2
LÖSUNG
Block 1:
1.) 16a – (3b + 8c – 5a) – (b – 3c)= 21a – 4b – 5c
2.) 3a – 4b – (-5a +7b) + (-9a – 10b) = -1a – 21b
3.) – ab + 7a – 13 – (- 4ab + 8a – 25) + (- 8ab + a – 21) = -5ab - 9
4.) 24a – [(13a- 8b + 2c) – (9a + 12b – 3c)] = 20a + 20b – 5c
5.) 37a + [22b – (17c + 12b – 11a) + 25c] – [18a – (7b – 3c)]= 30a + 17b + 5c
6.) 4xy – 8xz – {2yz – [3xy – (5xz + 6yz) + 7yz] – 2xy} = 9xy – 13xz – 1 yz
7.) a – {[(b – 3ab) – (a + 3ab)] – (6a – 3b)} = 8a – 4b + 6ab
Block 2:
1.) (a + b) • (4x – 5y) – (a – b) • (5x + 3y)
= -1ax – 8ay + 9 bx – 2by
2.) (2m + 4n) • (5a + 6b – 8c) + (3m + 4n) • (9a – 6b + 7c)
= 37 am – 6bm + 5cm + 56 an – 4cn
3.) (3a – 5b) • (6x – 7y + 9z) – (5x – 8y + 8z) • (4a – 5b)
= -2ax + 11 ay – 5az – 5bx – 5by – 5bz
4.) - 6.) nur ausklammern
4.) (4a – 2b) • (x + y) – (3a + 4b) • (x + y) = (x + y) • (1a – 6b)
5.) (5m + 2n) • (x – y) + (3m + 2n) • (x – y) = (x –y) • (8m + 4n)
6.) (15xy + 12bx) • (a – c) – (5bx + 10xy) • (a – c) = (a –c) • (5xy + 7bx)
Je Aufgabe = 3 Punkte
Notenschlüssel: 39 – 36 = 1
35 – 31 = 2
30 – 25 = 3
24 – 18 = 4
17 – 10 = 5
09 – 00 = 6
LÖSUNG
Block 1:
1.) 16a – (3b + 8c – 5a) – (b – 3c)= 21a – 4b – 5c
2.) 3a – 4b – (-5a +7b) + (-9a – 10b) = -1a – 21b
3.) – ab + 7a – 13 – (- 4ab + 8a – 25) + (- 8ab + a – 21) = -5ab - 9
4.) 24a – [(13a- 8b + 2c) – (9a + 12b – 3c)] = 20a + 20b – 5c
5.) 37a + [22b – (17c + 12b – 11a) + 25c] – [18a – (7b – 3c)]= 30a + 17b + 5c
6.) 4xy – 8xz – {2yz – [3xy – (5xz + 6yz) + 7yz] – 2xy} = 9xy – 13xz – 1 yz
7.) a – {[(b – 3ab) – (a + 3ab)] – (6a – 3b)} = 8a – 4b + 6ab
Block 2:
1.) (a + b) • (4x – 5y) – (a – b) • (5x + 3y)
= -1ax – 8ay + 9 bx – 2by
2.) (2m + 4n) • (5a + 6b – 8c) + (3m + 4n) • (9a – 6b + 7c)
= 37 am – 6bm + 5cm + 56 an – 4cn
3.) (3a – 5b) • (6x – 7y + 9z) – (5x – 8y + 8z) • (4a – 5b)
= -2ax + 11 ay – 5az – 5bx – 5by – 5bz
4.) - 6.) nur ausklammern
4.) (4a – 2b) • (x + y) – (3a + 4b) • (x + y) = (x + y) • (1a – 6b)
5.) (5m + 2n) • (x – y) + (3m + 2n) • (x – y) = (x –y) • (8m + 4n)
6.) (15xy + 12bx) • (a – c) – (5bx + 10xy) • (a – c) = (a –c) • (5xy + 7bx)
Je Aufgabe = 3 Punkte
Notenschlüssel: 39 – 36 = 1
35 – 31 = 2
30 – 25 = 3
24 – 18 = 4
17 – 10 = 5
09 – 00 = 6
