Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 2 - \log0{,}2\)
2. \(\log 10 + \log0{,}1\)
3. \(\log 1 - \log1\)
4. \(\log 2 + \log50\)
5. \(\log 2 + \log0{,}5\)
6. \(\log 0{,}5 + \log0{,}02\)
7. \(\log 0{,}8 + \log0{,}125\)
8. \(\log 800 - \log80\)
9. \(\log 200 - \log2\)
10. \(\log 4 - \log4\)
11. \(\log 5 - \log50\)
12. \(\log 250 + \log0{,}04\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 2 - \log0{,}2\\ = \log(2 : 0{,}2 ) \\ = \log ( 10) \\ =1\)
2. \(\log 10 + \log0{,}1\\ = \log(10 \cdot 0{,}1 ) \\ = \log ( 1) \\ =0\)
3. \(\log 1 - \log1\\ = \log(1 : 1 ) \\ = \log ( 1) \\ =0\)
4. \(\log 2 + \log50\\ = \log(2 \cdot 50 ) \\ = \log ( 100) \\ =2\)
5. \(\log 2 + \log0{,}5\\ = \log(2 \cdot 0{,}5 ) \\ = \log ( 1) \\ =0\)
6. \(\log 0{,}5 + \log0{,}02\\ = \log(0{,}5 \cdot 0{,}02 ) \\ = \log ( 0{,}01) \\ =-2\)
7. \(\log 0{,}8 + \log0{,}125\\ = \log(0{,}8 \cdot 0{,}125 ) \\ = \log ( 0{,}1) \\ =-1\)
8. \(\log 800 - \log80\\ = \log(800 : 80 ) \\ = \log ( 10) \\ =1\)
9. \(\log 200 - \log2\\ = \log(200 : 2 ) \\ = \log ( 100) \\ =2\)
10. \(\log 4 - \log4\\ = \log(4 : 4 ) \\ = \log ( 1) \\ =0\)
11. \(\log 5 - \log50\\ = \log(5 : 50 ) \\ = \log ( 0{,}1) \\ =-1\)
12. \(\log 250 + \log0{,}04\\ = \log(250 \cdot 0{,}04 ) \\ = \log ( 10) \\ =1\)