Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 500000 - \log50\)
2. \(\log 80 + \log0{,}125\)
3. \(\log 10 + \log0{,}01\)
4. \(\log 0{,}008 - \log0{,}8\)
5. \(\log 100 + \log1\)
6. \(\log 20 - \log200\)
7. \(\log 50 + \log0{,}02\)
8. \(\log 10 + \log0{,}1\)
9. \(\log 500 + \log0{,}2\)
10. \(\log 2500 - \log25\)
11. \(\log 10000 - \log1\)
12. \(\log 50 + \log2\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 500000 - \log50\\ = \log(500000 : 50 ) \\ = \log ( 10000) \\ =4\)
2. \(\log 80 + \log0{,}125\\ = \log(80 \cdot 0{,}125 ) \\ = \log ( 10) \\ =1\)
3. \(\log 10 + \log0{,}01\\ = \log(10 \cdot 0{,}01 ) \\ = \log ( 0{,}1) \\ =-1\)
4. \(\log 0{,}008 - \log0{,}8\\ = \log(0{,}008 : 0{,}8 ) \\ = \log ( 0{,}01) \\ =-2\)
5. \(\log 100 + \log1\\ = \log(100 \cdot 1 ) \\ = \log ( 100) \\ =2\)
6. \(\log 20 - \log200\\ = \log(20 : 200 ) \\ = \log ( 0{,}1) \\ =-1\)
7. \(\log 50 + \log0{,}02\\ = \log(50 \cdot 0{,}02 ) \\ = \log ( 1) \\ =0\)
8. \(\log 10 + \log0{,}1\\ = \log(10 \cdot 0{,}1 ) \\ = \log ( 1) \\ =0\)
9. \(\log 500 + \log0{,}2\\ = \log(500 \cdot 0{,}2 ) \\ = \log ( 100) \\ =2\)
10. \(\log 2500 - \log25\\ = \log(2500 : 25 ) \\ = \log ( 100) \\ =2\)
11. \(\log 10000 - \log1\\ = \log(10000 : 1 ) \\ = \log ( 10000) \\ =4\)
12. \(\log 50 + \log2\\ = \log(50 \cdot 2 ) \\ = \log ( 100) \\ =2\)