Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 0{,}2 - \log2\)
2. \(\log 20 + \log0{,}0005\)
3. \(\log 5 + \log0{,}02\)
4. \(\log 50 + \log2\)
5. \(\log 5 + \log2000\)
6. \(\log 0{,}08 - \log0{,}8\)
7. \(\log 50 + \log0{,}2\)
8. \(\log 40000 - \log40\)
9. \(\log 10 - \log10\)
10. \(\log 5 - \log5\)
11. \(\log 0{,}005 - \log0{,}5\)
12. \(\log 800 - \log8\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 0{,}2 - \log2\\ = \log(0{,}2 : 2 ) \\ = \log ( 0{,}1) \\ =-1\)
2. \(\log 20 + \log0{,}0005\\ = \log(20 \cdot 0{,}0005 ) \\ = \log ( 0{,}01) \\ =-2\)
3. \(\log 5 + \log0{,}02\\ = \log(5 \cdot 0{,}02 ) \\ = \log ( 0{,}1) \\ =-1\)
4. \(\log 50 + \log2\\ = \log(50 \cdot 2 ) \\ = \log ( 100) \\ =2\)
5. \(\log 5 + \log2000\\ = \log(5 \cdot 2000 ) \\ = \log ( 10000) \\ =4\)
6. \(\log 0{,}08 - \log0{,}8\\ = \log(0{,}08 : 0{,}8 ) \\ = \log ( 0{,}1) \\ =-1\)
7. \(\log 50 + \log0{,}2\\ = \log(50 \cdot 0{,}2 ) \\ = \log ( 10) \\ =1\)
8. \(\log 40000 - \log40\\ = \log(40000 : 40 ) \\ = \log ( 1000) \\ =3\)
9. \(\log 10 - \log10\\ = \log(10 : 10 ) \\ = \log ( 1) \\ =0\)
10. \(\log 5 - \log5\\ = \log(5 : 5 ) \\ = \log ( 1) \\ =0\)
11. \(\log 0{,}005 - \log0{,}5\\ = \log(0{,}005 : 0{,}5 ) \\ = \log ( 0{,}01) \\ =-2\)
12. \(\log 800 - \log8\\ = \log(800 : 8 ) \\ = \log ( 100) \\ =2\)