Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 50 + \log20\)
2. \(\log 2 - \log2\)
3. \(\log 5000000 - \log500\)
4. \(\log 10 - \log1\)
5. \(\log 250 + \log0{,}0004\)
6. \(\log 2{,}5 + \log4000\)
7. \(\log 50 + \log0{,}002\)
8. \(\log 0{,}08 - \log0{,}8\)
9. \(\log 0{,}5 + \log20\)
10. \(\log 25000 - \log250\)
11. \(\log 0{,}2 + \log5000\)
12. \(\log 80 - \log80\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 50 + \log20\\ = \log(50 \cdot 20 ) \\ = \log ( 1000) \\ =3\)
2. \(\log 2 - \log2\\ = \log(2 : 2 ) \\ = \log ( 1) \\ =0\)
3. \(\log 5000000 - \log500\\ = \log(5000000 : 500 ) \\ = \log ( 10000) \\ =4\)
4. \(\log 10 - \log1\\ = \log(10 : 1 ) \\ = \log ( 10) \\ =1\)
5. \(\log 250 + \log0{,}0004\\ = \log(250 \cdot 0{,}0004 ) \\ = \log ( 0{,}1) \\ =-1\)
6. \(\log 2{,}5 + \log4000\\ = \log(2{,}5 \cdot 4000 ) \\ = \log ( 10000) \\ =4\)
7. \(\log 50 + \log0{,}002\\ = \log(50 \cdot 0{,}002 ) \\ = \log ( 0{,}1) \\ =-1\)
8. \(\log 0{,}08 - \log0{,}8\\ = \log(0{,}08 : 0{,}8 ) \\ = \log ( 0{,}1) \\ =-1\)
9. \(\log 0{,}5 + \log20\\ = \log(0{,}5 \cdot 20 ) \\ = \log ( 10) \\ =1\)
10. \(\log 25000 - \log250\\ = \log(25000 : 250 ) \\ = \log ( 100) \\ =2\)
11. \(\log 0{,}2 + \log5000\\ = \log(0{,}2 \cdot 5000 ) \\ = \log ( 1000) \\ =3\)
12. \(\log 80 - \log80\\ = \log(80 : 80 ) \\ = \log ( 1) \\ =0\)