Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 0{,}8 - \log80\)
2. \(\log 0{,}05 - \log0{,}5\)
3. \(\log 10000 - \log1\)
4. \(\log 250 + \log4{,}0E-5\)
5. \(\log 2000 - \log20\)
6. \(\log 8000 - \log8\)
7. \(\log 50 + \log20\)
8. \(\log 5 - \log5\)
9. \(\log 4000 - \log0{,}4\)
10. \(\log 25 - \log250\)
11. \(\log 0{,}02 - \log2\)
12. \(\log 1 + \log10000\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 0{,}8 - \log80\\ = \log(0{,}8 : 80 ) \\ = \log ( 0{,}01) \\ =-2\)
2. \(\log 0{,}05 - \log0{,}5\\ = \log(0{,}05 : 0{,}5 ) \\ = \log ( 0{,}1) \\ =-1\)
3. \(\log 10000 - \log1\\ = \log(10000 : 1 ) \\ = \log ( 10000) \\ =4\)
4. \(\log 250 + \log4{,}0E-5\\ = \log(250 \cdot 4{,}0E-5 ) \\ = \log ( 0{,}01) \\ =-2\)
5. \(\log 2000 - \log20\\ = \log(2000 : 20 ) \\ = \log ( 100) \\ =2\)
6. \(\log 8000 - \log8\\ = \log(8000 : 8 ) \\ = \log ( 1000) \\ =3\)
7. \(\log 50 + \log20\\ = \log(50 \cdot 20 ) \\ = \log ( 1000) \\ =3\)
8. \(\log 5 - \log5\\ = \log(5 : 5 ) \\ = \log ( 1) \\ =0\)
9. \(\log 4000 - \log0{,}4\\ = \log(4000 : 0{,}4 ) \\ = \log ( 10000) \\ =4\)
10. \(\log 25 - \log250\\ = \log(25 : 250 ) \\ = \log ( 0{,}1) \\ =-1\)
11. \(\log 0{,}02 - \log2\\ = \log(0{,}02 : 2 ) \\ = \log ( 0{,}01) \\ =-2\)
12. \(\log 1 + \log10000\\ = \log(1 \cdot 10000 ) \\ = \log ( 10000) \\ =4\)