Question

a)-45+15-12-48-18 b)+69-98-91+107 c)-40+40-15 d)-68-41-17-18 e)-5-012+4.077 f)-306+408-32+18 g)-40+100-88+22​

Answer 1

a) -45+15-12-48-18=

= -30-12-48-18=

=-42-48-18=

=-90-18=-100

b) +69-98-91+107=

=-29-91+107=

=-120+107=

=-13

c) -40+40-15=

=0-15=-15

e) -5-012+4.077=

=-17+4.077= -12.923

d) -68-41-17-18=

= -109-17-18=

= -126-18= -144

f) -306+408-32+18=

= 102-32+18=

=70+18=88

g) -40+100-88+22=

= 60-88+22=

=-28+22= -6