Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 50 - \log0{,}5\)
2. \(\log 2 - \log20\)
3. \(\log 2 + \log5000\)
4. \(\log 100 - \log10\)
5. \(\log 20 + \log5\)
6. \(\log 0{,}025 - \log2{,}5\)
7. \(\log 8 + \log125\)
8. \(\log 20 + \log0{,}5\)
9. \(\log 500 + \log0{,}2\)
10. \(\log 2500 - \log2{,}5\)
11. \(\log 5000 - \log5\)
12. \(\log 2{,}5 + \log0{,}004\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 50 - \log0{,}5\\ = \log(50 : 0{,}5 ) \\ = \log ( 100) \\ =2\)
2. \(\log 2 - \log20\\ = \log(2 : 20 ) \\ = \log ( 0{,}1) \\ =-1\)
3. \(\log 2 + \log5000\\ = \log(2 \cdot 5000 ) \\ = \log ( 10000) \\ =4\)
4. \(\log 100 - \log10\\ = \log(100 : 10 ) \\ = \log ( 10) \\ =1\)
5. \(\log 20 + \log5\\ = \log(20 \cdot 5 ) \\ = \log ( 100) \\ =2\)
6. \(\log 0{,}025 - \log2{,}5\\ = \log(0{,}025 : 2{,}5 ) \\ = \log ( 0{,}01) \\ =-2\)
7. \(\log 8 + \log125\\ = \log(8 \cdot 125 ) \\ = \log ( 1000) \\ =3\)
8. \(\log 20 + \log0{,}5\\ = \log(20 \cdot 0{,}5 ) \\ = \log ( 10) \\ =1\)
9. \(\log 500 + \log0{,}2\\ = \log(500 \cdot 0{,}2 ) \\ = \log ( 100) \\ =2\)
10. \(\log 2500 - \log2{,}5\\ = \log(2500 : 2{,}5 ) \\ = \log ( 1000) \\ =3\)
11. \(\log 5000 - \log5\\ = \log(5000 : 5 ) \\ = \log ( 1000) \\ =3\)
12. \(\log 2{,}5 + \log0{,}004\\ = \log(2{,}5 \cdot 0{,}004 ) \\ = \log ( 0{,}01) \\ =-2\)