63
129 minus -128.6 is 257.6
130
128.81 to the nearest whole number is 129 84 + 4 + 41= 129
-129/500
129 does not go into 20 at all, as 20 is less than 129. In terms of whole numbers, 129 goes into 20 zero times. If you were to divide 20 by 129, you would get a decimal result of approximately 0.155.
They're all positive.
136 - -129 = 265
129 minus -128.6 is 257.6
129 + 34 = 163
1467+129 = 1596
129 times 10 to the negative 6 (129 x 10-6) in standard notation = 0.000129
-129 + 22 = -107
115 + 14 = 129
129
129
130
How about: 100+29 = 129