gr7 heelgetalle werkkaart(assessering)

1) Vereenvoudig: a) – 23 + 18 b) 15 – – 7 c) ( – 6)( – 4) _______________ _______________ _______________ _______________ _______________ _______________ d) 8 – – 5 e) 4 + 5 – 6 + 32 – 6 – 8 f) 7² – 3² _______________ _______________ _______________ _______________ _______________ _______________ g) – 4 x 13 x –2 h) – 2 + +3 i) – 3 – – 4 _______________ _______________ _______________ _______________ _______________ _______________ j) – 2 (1 + 3) + (1 – 4 ) – 3 _______________ _______________ 2) Skryf die volgende 3 getalle in die getallery neer: a) 15; 5; –5; ____________ ; ____________ ; ____________ b) –10; – 9; – 7; – 4; __________ ; __________ ; __________ 3) Vereenvoudig: a) (– 3 x –9) + (– 7 x 5) ____________________ ____________________

b) 5 + (– 7) – 6 ____________________ ____________________

c) –8 – (2) + (-3) – (– 4) ____________________ ____________________

d) (– 12) + (14) + (– 4) + (3) ____________________ ____________________

4) Rangskik die volgende getalle van klein na groot: a) 5 ; – 11 ; 3 ; – 5 ; 1 ; 0 ________________________________________ b) 3 ; 5 ; – 2 1 ; – 3 ; -4 __________________________________________ 5) Skryf die versameling heelgetalle neer wat: a) Groter as –2 en kleiner as 6 is ________________________ b) Kleiner as –7 en groter as –11 is_______________________ c) Kleiner as 7 en groter as 0 is _________________________ d) Groter as –9 en kleiner as –5 is _______________________ 6) Skryf die heelgetal neer wat: a) 5 groter as –13 is __________ b) 9 minder as 0 is __________ c) 12 kleiner as 21 is __________ d) 7 groter as –2 is __________ 7) Vul die ontbrekende heelgetal in: a) 15 + __________ = 21 b) 25 + __________ = 18 c) __________ – 13 = 4 d) __________ – 12 = – 3

e) 3 + __________ = 0 g) 7 + 3 + __________ = 0 8) Vereenvoudig die volgende: a) (– 7) – (– 7) b) 3(– 13) + (– 6)2 c) –3(7)(+2)( – 1)( – 1) d) –15 + 6 e) (– 5)(2)( – 3)(0)(5) f) –25 – 2 g) (– 20)  (5) h) –12 – (– 3) i) –12(– 3) j) (– 6)( – 3) k) –20 – 5 – 5 l) –3 + 4 – 7 – 8 + 12 – 4

f) 1 + __________ = – 15 h) –15 + 12 + ________ = 3