Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 4 - \log4\)
2. \(\log 0{,}2 - \log0{,}2\)
3. \(\log 20 + \log0{,}005\)
4. \(\log 2{,}5 - \log250\)
5. \(\log 80 - \log80\)
6. \(\log 25 - \log250\)
7. \(\log 1 + \log0{,}1\)
8. \(\log 40 + \log250\)
9. \(\log 500 + \log0{,}2\)
10. \(\log 400 - \log0{,}4\)
11. \(\log 80 + \log0{,}125\)
12. \(\log 4 + \log0{,}0025\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 4 - \log4\\ = \log(4 : 4 ) \\ = \log ( 1) \\ =0\)
2. \(\log 0{,}2 - \log0{,}2\\ = \log(0{,}2 : 0{,}2 ) \\ = \log ( 1) \\ =0\)
3. \(\log 20 + \log0{,}005\\ = \log(20 \cdot 0{,}005 ) \\ = \log ( 0{,}1) \\ =-1\)
4. \(\log 2{,}5 - \log250\\ = \log(2{,}5 : 250 ) \\ = \log ( 0{,}01) \\ =-2\)
5. \(\log 80 - \log80\\ = \log(80 : 80 ) \\ = \log ( 1) \\ =0\)
6. \(\log 25 - \log250\\ = \log(25 : 250 ) \\ = \log ( 0{,}1) \\ =-1\)
7. \(\log 1 + \log0{,}1\\ = \log(1 \cdot 0{,}1 ) \\ = \log ( 0{,}1) \\ =-1\)
8. \(\log 40 + \log250\\ = \log(40 \cdot 250 ) \\ = \log ( 10000) \\ =4\)
9. \(\log 500 + \log0{,}2\\ = \log(500 \cdot 0{,}2 ) \\ = \log ( 100) \\ =2\)
10. \(\log 400 - \log0{,}4\\ = \log(400 : 0{,}4 ) \\ = \log ( 1000) \\ =3\)
11. \(\log 80 + \log0{,}125\\ = \log(80 \cdot 0{,}125 ) \\ = \log ( 10) \\ =1\)
12. \(\log 4 + \log0{,}0025\\ = \log(4 \cdot 0{,}0025 ) \\ = \log ( 0{,}01) \\ =-2\)