Question

Matematyka klasa 6 ćwiczenie 10, 11, 12, , 13 ,14 i 15strona 82, plis na jutro!!

Answer 1

Verified answer

[tex]zad \: 10 \\ a) \: 125-6-24+30=125-30+30=125[/tex]

[tex]b) -16+67-40-7+66= 133-63=70[/tex]

[tex]c) \: 2.4- 4.1 + 17.6 - 5.9 = 20 - 10 = 10[/tex]

[tex]d) \: 5 \frac{4}{7} + 5.4 - 1 \frac{4}{7} - 7.4 = 4 + 5.4 - 7.4 = 9.4 - 7.4 = 2[/tex]

[tex]e) \: - 0.75 + 6.3 - 3.1 - \frac{1}{4} - 6.3 = - 1 - 3.1 = 4.1

[/tex]

[tex]f) \: - 3 \frac{3}{4} + 2.4 - 5.25 + 3 \frac{3}{5} = - 3.75 + 2.4 - 5.25 + 3.6 = 6 - 9 = - 3[/tex]

[tex]g) \: - 2 \frac{1}{5} + 3.2 + 4 \frac{1}{4} - 2.25-5 \frac{3}{5} = - 2.2 + 3.2 + 4.25 - 2.25 - 5.6 = 1 + 2 - 5.6 = 3 - 5.6 = - 2.6[/tex]

[tex]zad \: 11[/tex]

[tex]a) \: 3 - 7 = - 4 \\ 3 - 26 = - 23[/tex]

[tex]b) \: - 1 - 4 = - 5 \\ - 1 - 6 = - 7[/tex]

[tex]c) \: 3 \frac{1}{2} - 2 = 1 \frac{1}{2} \\ - 2 \frac{1}{2} - 5 = - 7\frac{1}{2}[/tex]

[tex]zad \: 12 \\ a) = \\ b) \: = \\ c) \:≠ \\ d) \: ≠[/tex]

[tex]zad \: 13 \\ a) \: 15 + ( - 35) = - 20 \\ - 37 + ( - 10) = - 47 \\ b) \: 4 \frac{1}{2} + ( - 8) = - 3 \frac{3}{4} \\ - 7.25 + ( - 9) = - 16.25[/tex]

[tex]zad \: 14 \\ a) \: - 15 + 25 = 10 \\ b) \: - 6 + 2 = - 4 \\ c) \: - 110 + 656 = 546 \\ d) \: 4.1 + 6 = 10.1 \\ e) \: - 5 + 9.3 = 4.3[/tex]

[tex]zad \: 15 \\ a) \: 18 - 10 = 8 \\ 18 - ( - 10) = 18 + 10 = 28 \\ - 18 - 10 = - 28 \\ - 18 - ( - 10) = - 18 + 10 = - 8[/tex]

[tex]b)\: - 14 - 12 = - 26 \\ - 14 - ( - 12) = - 14 + 12 = - 2 \\ 14 - 12 = 2 \\ 14 - (- 12) = 14 + 12 = 26[/tex]

[tex]c) \: 2.75 - 5 = - 2.25 \\ 2.75 - ( - 5) = 2.75 + 5 = 7.75 \\ - 2.75 - 5 = - 7.75 \\ - 2.75 - ( - 5) = - 2.75 + 5 =2.25[/tex]

liczę na naj