(-3)×(7 – 9) = ( –3)×( –2) = +6 oder = ( –3)×7 – ( –3)×9 = –21 + 27 = +6

[ –64 + ( –96)]: 8 = –160 : 8 = –20 oder = ( –64):8 + ( –96):8 = –8 + ( –12) = –20

53×212 – 53×112 = 11236 – 5936 = 5300 oder = 53×(212 – 112) = 53×100 = 5300

Distributivgesetze: a×(b+c) = a×b+a×c
(a+b)×c = a×c+b×c

a×(b–c) = a×b–a×c
(a–b)×c = a×c–b×c

(a+b) : c = a:c + b:c
(a–b) : c = a:c – b:c