\[Стр.\ 38.\]
\[31.\ Сложение\ чисел\ с\ разными\ \]
\[знаками\]
\[\boxed{\mathbf{1.}}\]
\[\textbf{а)}\ 1)\ большего;\]
\[2)\ больше;\]
\[\textbf{б)}\ большим;\]
\[\textbf{в)}\ разности.\]
\[\boxed{\mathbf{2.}}\]
| \[+\] | \[-\] |
|---|---|
| \[10 + 6\] | \[- 18 + 9\] |
| \[- 4 + 5\] | \[- 27 + ( - 6)\] |
| \[47 + ( - 14)\] | \[28 + ( - 40)\] |
| \[- 49 + 60\] | \[- 14 + 5\] |
\[\boxed{\mathbf{3.}}\]
| \[Сложение\] | \[Вычитание\] |
|---|---|
| \[3 + 8\] | \[- 6 + 7\] |
| \[- 6 + ( - 9)\] | \[6 + ( - 7)\] |
| \[- 25 + ( - 1)\] | \[- 24 + 13\] |
| \[19 + ( - 30)\] | |
| \[14 + ( - 18)\] |