\[\boxed{\mathbf{212.}}\]
\[\textbf{а)}\ 40 + 152 = 192\]
\[3 + 200 = 203\]
\[20 + 340 = 360\]
\[562 - 50 = 512\]
\[453 - 400 = 53\]
\[725 - 20 = 705\]
\[\textbf{б)}\ 749 - 7 \cdot 7 = 749 - 49 = 700\]
\[8 \cdot 5 + 318 = 40 + 318 = 358\]
\[588 - 32\ :4 = 588 - 8 = 580\]