000000000000 In base 0, what is 0 + -000000? -000000 In base 00, what is -00 + -0000? -0000 In base 0, what is 00000000 + 0? 00000000 In base 00, what is -0000 + 0? -000c In base 0, what is 000000 + 00? 000000 In base 0, what is 000000 - 000? 000000 In base 00, what is -0