а) |-8.3| + |-2.9| = 8.3 + 2.9 = 11.2
в) |-8.4| \(\cdot\) |-1.5| = 8.4 \(\cdot\) 1.5 = 12.6
д) |-\(\frac{5}{9}\)| - |-\(\frac{5}{9}\)| = \(\frac{5}{9}\) - \(\frac{5}{9}\) = 0
б) |-2.73| : |1.3| = 2.73 : 1.3 = 2.1
г) |-5.75| - |2.38| = 5.75 - 2.38 = 3.37
e) |1\(\frac{1}{7}\)| : |-\(\frac{4}{7}\)| = \(\frac{8}{7}\) : \(\frac{4}{7}\) = \(\frac{8}{7}\) \(\cdot\) \(\frac{7}{4}\) = 2
а) |2.7| и |-2.8|
2.7 < 2.8, значит |2.7| < |-2.8|
б) |-13.7| и |0|
13.7 > 0, значит |-13.7| > |0|
в) |-\(\frac{3}{7}\)| и |\(\frac{3}{15}\)|
|-\(\frac{3}{7}\)| = \(\frac{3}{7}\) = \(\frac{45}{105}\)
|\(\frac{3}{15}\)| = \(\frac{3}{15}\) = \(\frac{1}{5}\) = \(\frac{21}{105}\)
\(\frac{45}{105}\) > \(\frac{21}{105}\), значит |-\(\frac{3}{7}\)| > |\(\frac{3}{15}\)|
а) |1.7| + |-1.8| = 1.7 + 1.8 = 3.5
в) |-3.7| \(\cdot\) |4.2| = 3.7 \(\cdot\) 4.2 = 15.54
д) |-\(\frac{3}{7}\)| + |-\(\frac{1}{14}\)| = \(\frac{3}{7}\) + \(\frac{1}{14}\) = \(\frac{6}{14}\) + \(\frac{1}{14}\) = \(\frac{7}{14}\) = \(\frac{1}{2}\)
б) |7.2| : |-0.6| = 7.2 : 0.6 = 12
г) |-2.9| - |-0.9| = 2.9 - 0.9 = 2
e) |-\(\frac{5}{9}\)| \(\cdot\) |3\(\frac{3}{5}\)| = \(\frac{5}{9}\) \(\cdot\) \(\frac{18}{5}\) = 2
а) |5.6| и |-5.8|
5.6 < 5.8, значит |5.6| < |-5.8|
б) |-3.8| и |0|
3.8 > 0, значит |-3.8| > |0|
в) |-\(\frac{5}{7}\)| и |-\(\frac{5}{12}\)|
|-\(\frac{5}{7}\)| = \(\frac{5}{7}\) = \(\frac{60}{84}\)
|-\(\frac{5}{12}\)| = \(\frac{5}{12}\) = \(\frac{35}{84}\)
\(\frac{60}{84}\) > \(\frac{35}{84}\), значит |-\(\frac{5}{7}\)| > |-\(\frac{5}{12}\)|