Use a simple method to calculate the following questions. (1) 2.9 × 0.45 + 0.29 × 4.2 + 0.029 × 13 (2) 3.84 × 9.6 + 0.96 × 61.6

（1）2.9×0.45+0.29×4.2+0.029×13，=2.9×0.45+2.9×0.42+2.9×0.13，=2.9×（0.45+0.42+0.13），=2.9×1，=2.9；（2）3.84×9.6+0.96×61.6，=3.84×9.6+9.6×6.16，=（3.84+6.16）×9.6，=10×9.6，=96．...