\[\mathbf{Страница\ 44.}\]
\[\boxed{\mathbf{3.}}\]
\[\textbf{а)} - 1 + 2 = 1\]
\[4 + ( - 5) = - 1\]
\[- 3 + 7 = 4\]
\[- 2 + ( - 3) = - 5\]
\[\textbf{б)}\ 1 + ( - 6) = - 5\]
\[- 7 + 8 = 1\]
\[- 4 + ( - 2) = - 6\]
\[- 1 + ( - 6) = - 7\]
\[\textbf{в)} - 6 + 3 = - 3\]
\[5 + ( - 11) = - 6\]
\[- 2 + ( - 5) = - 7\]
\[0 + ( - 7) = - 7\]
\[\boxed{\mathbf{4.}}\]
\[1)\ модули;\]
\[2)\ минус.\]
\[\boxed{\mathbf{5.}}\]
\[\textbf{а)}\ |6| = 6\]
\[| - 18| = 18\]
\[\textbf{б)}\ | - 10| = 10\]
\[|43| = 43\]
\[\textbf{в)}\ | - 63| = 63\]
\[| - 18| = 18\]
\[\textbf{г)}\ | - 35| = 35\]
\[|27| = 27\]
\[\boxed{\mathbf{6.}}\]
\[\textbf{а)} - 15 + ( - 5) = - 20\]
\[- 16 + ( - 16) = - 32\]
\[- 26 + ( - 20) = - 46\]
\[\textbf{б)} - 40 + ( - 13) = - 53\]
\[- 4 + ( - 4) = - 8\]
\[- 17 + ( - 43) = - 60\]
\[\textbf{в)} - 50 + ( - 50) = - 100\]
\[- 44 + ( - 28) = - 70\]
\[- 203 + ( - 197) = - 400\]
\[\boxed{\mathbf{7.}}\]
\[\textbf{а)} - 40 + ( - 50) + ( - 50) =\]
\[= - 140\]
\[\textbf{б)} - 200 + ( - 320) + ( - 80) =\]
\[= - 600\]
\[\textbf{в)} - 4 + ( - 37) + ( - 6) = - 47\]
\[\textbf{г)} - 100 + ( - 240) + ( - 160) =\]
\[= - 500\]
\[\boxed{\mathbf{8.}}\]
\[\textbf{а)} - 14 + ( - 7) = - 21 > - 40\]
\[\textbf{б)} - 26 + ( - 14) = - 40 < - 5\]
\[\textbf{в)} - 16 + ( - 37) = - 53 > - 100\]