Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 100 + \log0{,}0001\)
2. \(\log 50000 - \log50\)
3. \(\log 5 + \log20\)
4. \(\log 0{,}5 + \log20\)
5. \(\log 0{,}8 + \log0{,}125\)
6. \(\log 2000000 - \log200\)
7. \(\log 5000 - \log0{,}5\)
8. \(\log 2 + \log5000\)
9. \(\log 2{,}5 + \log4000\)
10. \(\log 40 + \log0{,}0025\)
11. \(\log 5 + \log0{,}002\)
12. \(\log 0{,}8 + \log1{,}25\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 100 + \log0{,}0001\\ = \log(100 \cdot 0{,}0001 ) \\ = \log ( 0{,}01) \\ =-2\)
2. \(\log 50000 - \log50\\ = \log(50000 : 50 ) \\ = \log ( 1000) \\ =3\)
3. \(\log 5 + \log20\\ = \log(5 \cdot 20 ) \\ = \log ( 100) \\ =2\)
4. \(\log 0{,}5 + \log20\\ = \log(0{,}5 \cdot 20 ) \\ = \log ( 10) \\ =1\)
5. \(\log 0{,}8 + \log0{,}125\\ = \log(0{,}8 \cdot 0{,}125 ) \\ = \log ( 0{,}1) \\ =-1\)
6. \(\log 2000000 - \log200\\ = \log(2000000 : 200 ) \\ = \log ( 10000) \\ =4\)
7. \(\log 5000 - \log0{,}5\\ = \log(5000 : 0{,}5 ) \\ = \log ( 10000) \\ =4\)
8. \(\log 2 + \log5000\\ = \log(2 \cdot 5000 ) \\ = \log ( 10000) \\ =4\)
9. \(\log 2{,}5 + \log4000\\ = \log(2{,}5 \cdot 4000 ) \\ = \log ( 10000) \\ =4\)
10. \(\log 40 + \log0{,}0025\\ = \log(40 \cdot 0{,}0025 ) \\ = \log ( 0{,}1) \\ =-1\)
11. \(\log 5 + \log0{,}002\\ = \log(5 \cdot 0{,}002 ) \\ = \log ( 0{,}01) \\ =-2\)
12. \(\log 0{,}8 + \log1{,}25\\ = \log(0{,}8 \cdot 1{,}25 ) \\ = \log ( 1) \\ =0\)