1. Complete the following: \( \begin{array}{l}\mathrm{a} .4 \times 32=4 \times 140-\square \\ \text { c. } 3 \times 83=3 \times 190-\square \\ \text { e. } 6 \times 79=6 \times 180-\square \\ \text { 2. Calculate } 1 \mathrm{a}-\mathrm{c}\end{array} \)

To complete the equations, we first need to simplify them one by one. 1. a. \( 0.4 \times 32 = 12.8 \) So, \( 4 \times 140 - \square = 560 - \square \) Therefore, \( 560 - 12.8 = \square \) \( \square = 547.2 \) 2. c. \( 3 \times 83 = 249 \) So, \( 3 \times 190 - \square = 570 - \square \) Therefore, \( 570 - 249 = \square \) \( \square = 321 \) 3. e. \( 6 \times 79 = 474 \) So, \( 6 \times 180 - \square = 1080 - \square \) Therefore, \( 1080 - 474 = \square \) \( \square = 606 \) Now, let's calculate \( 1a - c \): 1. a - c = \( 12.8 - 249 \) = \( -236.2 \) So, the completed values are: - \( a: 547.2 \) - \( c: 321 \) - \( e: 606 \) - \( 1a - c: -236.2 \)