To calculate the given addition and subtraction problems, we can simply add or subtract the numbers accordingly. Here are the solutions:
12.35 + 1.08 = 13.43
To solve this, we add 12.35 and 1.08 to get the sum, which is 13.43.
8.02 - 0.64 = 7.38
To solve this, we subtract 0.64 from 8.02 to get the difference, which is 7.38.
568.38 - 134.21 = 434.17
To solve this, we subtract 134.21 from 568.38 to get the difference, which is 434.17.
0.29 + 0.92 = 1.21
To solve this, we add 0.29 and 0.92 to get the sum, which is 1.21.
Therefore, the solutions are:
12.35 + 1.08 = 13.43
8.02 - 0.64 = 7.38
568.38 - 134.21 = 434.17
0.29 + 0.92 = 1.21