\[Страница\ 38.\]
\[\boxed{\mathbf{4.}}\]
\[\boxed{\mathbf{5.}}\]
\[\textbf{а)}\ 7,25 - 0,99 = 6,26\]
\[\textbf{б)}\ 9,34 + 4,98 = 14,32\]
\[\textbf{в)}\ 146,2 + 99,9 = 246,1\]
\[\textbf{г)}\ 49,9 - 47,81 = 2,09\]
\[\textbf{д)}\ 9,99 + 0,01 = 10\]
\[\textbf{е)}\ 11 - 6,8 = 4,2\]
\[\textbf{ж)}\ 0,13 + 0,87 = 1\]
\[\textbf{з)}\ 51,84 - 0,84 = 5\]
\[\boxed{\mathbf{6.}}\]
\[\textbf{а)}\ 3,7a + 4,3a = 8a\]
\[\textbf{б)}\ 16,5b - 7,5b = 9\]
\[\textbf{в)}\ 18x - 0,7x = 17,3x\]
\[\textbf{г)}\ 13,9y + 7,2y = 21,1y\]
\[\textbf{д)}\ 0,4a + 0,5a + 0,1a = a\]
\[\textbf{е)}\ 8,6b - 3,2b - 5,4b = 0\]
\[\textbf{ж)}\ 2x - 1,5x - 0,3x = 0,2x\]
\[\textbf{з)}\ 5y + 0,7x + 1,8x = 5y + 2,5x\ \]
\[\boxed{\mathbf{7.}}\]
\[\boxed{\mathbf{8.}}\]
\[\textbf{а)}\]
\[+\] | \[0,6\] | \[5,13\] | \[12,4\] |
---|---|---|---|
\[7,8\] | \[8,4\] | \[12,93\] | \[20,2\] |
\[10,6\] | \[11,2\] | \[15,73\] | \[23\] |
\[1,33\] | \[1,93\] | \[6,46\] | \[13,73\] |
\[\textbf{б)}\ \]
\[+\] | \[4,35\] | \[41,6\] | \[9,5\] |
---|---|---|---|
\[13,2\] | \[17,55\] | \[54,8\] | \[22,7\] |
\[9,05\] | \[13,4\] | \[50,65\] | \[18,55\] |
\[7,5\] | \[11,85\] | \[49,1\] | \[17\] |