Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 0{,}4 - \log40\)
2. \(\log 50 + \log0{,}2\)
3. \(\log 50000 - \log50\)
4. \(\log 1 - \log10\)
5. \(\log 250 - \log250\)
6. \(\log 0{,}5 - \log5\)
7. \(\log 5 + \log200\)
8. \(\log 4 + \log25\)
9. \(\log 0{,}2 - \log2\)
10. \(\log 2 - \log20\)
11. \(\log 2{,}5 + \log400\)
12. \(\log 2 + \log500\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 0{,}4 - \log40\\ = \log(0{,}4 : 40 ) \\ = \log ( 0{,}01) \\ =-2\)
2. \(\log 50 + \log0{,}2\\ = \log(50 \cdot 0{,}2 ) \\ = \log ( 10) \\ =1\)
3. \(\log 50000 - \log50\\ = \log(50000 : 50 ) \\ = \log ( 1000) \\ =3\)
4. \(\log 1 - \log10\\ = \log(1 : 10 ) \\ = \log ( 0{,}1) \\ =-1\)
5. \(\log 250 - \log250\\ = \log(250 : 250 ) \\ = \log ( 1) \\ =0\)
6. \(\log 0{,}5 - \log5\\ = \log(0{,}5 : 5 ) \\ = \log ( 0{,}1) \\ =-1\)
7. \(\log 5 + \log200\\ = \log(5 \cdot 200 ) \\ = \log ( 1000) \\ =3\)
8. \(\log 4 + \log25\\ = \log(4 \cdot 25 ) \\ = \log ( 100) \\ =2\)
9. \(\log 0{,}2 - \log2\\ = \log(0{,}2 : 2 ) \\ = \log ( 0{,}1) \\ =-1\)
10. \(\log 2 - \log20\\ = \log(2 : 20 ) \\ = \log ( 0{,}1) \\ =-1\)
11. \(\log 2{,}5 + \log400\\ = \log(2{,}5 \cdot 400 ) \\ = \log ( 1000) \\ =3\)
12. \(\log 2 + \log500\\ = \log(2 \cdot 500 ) \\ = \log ( 1000) \\ =3\)