Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 5 + \log0,2\)
2. \(\log 100 - \log10\)
3. \(\log 0,5 + \log20000\)
4. \(\log 4 - \log4\)
5. \(\log 100 + \log100\)
6. \(\log 0,5 - \log5\)
7. \(\log 250 + \log0,04\)
8. \(\log 20 + \log0,0005\)
9. \(\log 250 + \log4\)
10. \(\log 20 + \log500\)
11. \(\log 200 + \log5\)
12. \(\log 0,25 - \log2,5\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 5 + \log0,2\\ = \log(5 \cdot 0,2 ) \\ = \log ( 1) \\ =0\)
2. \(\log 100 - \log10\\ = \log(100 : 10 ) \\ = \log ( 10) \\ =1\)
3. \(\log 0,5 + \log20000\\ = \log(0,5 \cdot 20000 ) \\ = \log ( 10000) \\ =4\)
4. \(\log 4 - \log4\\ = \log(4 : 4 ) \\ = \log ( 1) \\ =0\)
5. \(\log 100 + \log100\\ = \log(100 \cdot 100 ) \\ = \log ( 10000) \\ =4\)
6. \(\log 0,5 - \log5\\ = \log(0,5 : 5 ) \\ = \log ( 0,1) \\ =-1\)
7. \(\log 250 + \log0,04\\ = \log(250 \cdot 0,04 ) \\ = \log ( 10) \\ =1\)
8. \(\log 20 + \log0,0005\\ = \log(20 \cdot 0,0005 ) \\ = \log ( 0,01) \\ =-2\)
9. \(\log 250 + \log4\\ = \log(250 \cdot 4 ) \\ = \log ( 1000) \\ =3\)
10. \(\log 20 + \log500\\ = \log(20 \cdot 500 ) \\ = \log ( 10000) \\ =4\)
11. \(\log 200 + \log5\\ = \log(200 \cdot 5 ) \\ = \log ( 1000) \\ =3\)
12. \(\log 0,25 - \log2,5\\ = \log(0,25 : 2,5 ) \\ = \log ( 0,1) \\ =-1\)