Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 250 + \log4,0E-5\)
2. \(\log 100000 - \log10\)
3. \(\log 4 + \log2500\)
4. \(\log 40 - \log40\)
5. \(\log 2 + \log5\)
6. \(\log 8 - \log0,8\)
7. \(\log 0,04 - \log4\)
8. \(\log 50 + \log0,0002\)
9. \(\log 5 - \log0,5\)
10. \(\log 200 - \log20\)
11. \(\log 25000 - \log250\)
12. \(\log 500 - \log5\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 250 + \log4,0E-5\\ = \log(250 \cdot 4,0E-5 ) \\ = \log ( 0,01) \\ =-2\)
2. \(\log 100000 - \log10\\ = \log(100000 : 10 ) \\ = \log ( 10000) \\ =4\)
3. \(\log 4 + \log2500\\ = \log(4 \cdot 2500 ) \\ = \log ( 10000) \\ =4\)
4. \(\log 40 - \log40\\ = \log(40 : 40 ) \\ = \log ( 1) \\ =0\)
5. \(\log 2 + \log5\\ = \log(2 \cdot 5 ) \\ = \log ( 10) \\ =1\)
6. \(\log 8 - \log0,8\\ = \log(8 : 0,8 ) \\ = \log ( 10) \\ =1\)
7. \(\log 0,04 - \log4\\ = \log(0,04 : 4 ) \\ = \log ( 0,01) \\ =-2\)
8. \(\log 50 + \log0,0002\\ = \log(50 \cdot 0,0002 ) \\ = \log ( 0,01) \\ =-2\)
9. \(\log 5 - \log0,5\\ = \log(5 : 0,5 ) \\ = \log ( 10) \\ =1\)
10. \(\log 200 - \log20\\ = \log(200 : 20 ) \\ = \log ( 10) \\ =1\)
11. \(\log 25000 - \log250\\ = \log(25000 : 250 ) \\ = \log ( 100) \\ =2\)
12. \(\log 500 - \log5\\ = \log(500 : 5 ) \\ = \log ( 100) \\ =2\)