Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 25 + \log400\)
2. \(\log 25 - \log250\)
3. \(\log 20000 - \log2\)
4. \(\log 8 - \log80\)
5. \(\log 2 + \log500\)
6. \(\log 100 + \log100\)
7. \(\log 10 - \log10\)
8. \(\log 5 + \log20\)
9. \(\log 0{,}04 - \log4\)
10. \(\log 500 - \log5\)
11. \(\log 80 + \log125\)
12. \(\log 5 + \log0{,}02\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 25 + \log400\\ = \log(25 \cdot 400 ) \\ = \log ( 10000) \\ =4\)
2. \(\log 25 - \log250\\ = \log(25 : 250 ) \\ = \log ( 0{,}1) \\ =-1\)
3. \(\log 20000 - \log2\\ = \log(20000 : 2 ) \\ = \log ( 10000) \\ =4\)
4. \(\log 8 - \log80\\ = \log(8 : 80 ) \\ = \log ( 0{,}1) \\ =-1\)
5. \(\log 2 + \log500\\ = \log(2 \cdot 500 ) \\ = \log ( 1000) \\ =3\)
6. \(\log 100 + \log100\\ = \log(100 \cdot 100 ) \\ = \log ( 10000) \\ =4\)
7. \(\log 10 - \log10\\ = \log(10 : 10 ) \\ = \log ( 1) \\ =0\)
8. \(\log 5 + \log20\\ = \log(5 \cdot 20 ) \\ = \log ( 100) \\ =2\)
9. \(\log 0{,}04 - \log4\\ = \log(0{,}04 : 4 ) \\ = \log ( 0{,}01) \\ =-2\)
10. \(\log 500 - \log5\\ = \log(500 : 5 ) \\ = \log ( 100) \\ =2\)
11. \(\log 80 + \log125\\ = \log(80 \cdot 125 ) \\ = \log ( 10000) \\ =4\)
12. \(\log 5 + \log0{,}02\\ = \log(5 \cdot 0{,}02 ) \\ = \log ( 0{,}1) \\ =-1\)