Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 0,2 + \log5\)
2. \(\log 10 + \log1000\)
3. \(\log 100 - \log1\)
4. \(\log 0,4 + \log0,25\)
5. \(\log 40 - \log0,4\)
6. \(\log 200 - \log2\)
7. \(\log 0,8 + \log125\)
8. \(\log 20 + \log0,05\)
9. \(\log 5 + \log0,02\)
10. \(\log 8000 - \log8\)
11. \(\log 2 + \log5000\)
12. \(\log 5 + \log0,002\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 0,2 + \log5\\ = \log(0,2 \cdot 5 ) \\ = \log ( 1) \\ =0\)
2. \(\log 10 + \log1000\\ = \log(10 \cdot 1000 ) \\ = \log ( 10000) \\ =4\)
3. \(\log 100 - \log1\\ = \log(100 : 1 ) \\ = \log ( 100) \\ =2\)
4. \(\log 0,4 + \log0,25\\ = \log(0,4 \cdot 0,25 ) \\ = \log ( 0,1) \\ =-1\)
5. \(\log 40 - \log0,4\\ = \log(40 : 0,4 ) \\ = \log ( 100) \\ =2\)
6. \(\log 200 - \log2\\ = \log(200 : 2 ) \\ = \log ( 100) \\ =2\)
7. \(\log 0,8 + \log125\\ = \log(0,8 \cdot 125 ) \\ = \log ( 100) \\ =2\)
8. \(\log 20 + \log0,05\\ = \log(20 \cdot 0,05 ) \\ = \log ( 1) \\ =0\)
9. \(\log 5 + \log0,02\\ = \log(5 \cdot 0,02 ) \\ = \log ( 0,1) \\ =-1\)
10. \(\log 8000 - \log8\\ = \log(8000 : 8 ) \\ = \log ( 1000) \\ =3\)
11. \(\log 2 + \log5000\\ = \log(2 \cdot 5000 ) \\ = \log ( 10000) \\ =4\)
12. \(\log 5 + \log0,002\\ = \log(5 \cdot 0,002 ) \\ = \log ( 0,01) \\ =-2\)