Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 250 + \log0{,}04\)
2. \(\log 20 + \log0{,}005\)
3. \(\log 2000 - \log200\)
4. \(\log 100 + \log1\)
5. \(\log 250000 - \log250\)
6. \(\log 5000 - \log500\)
7. \(\log 40 - \log40\)
8. \(\log 40 + \log0{,}025\)
9. \(\log 2 - \log0{,}2\)
10. \(\log 0{,}5 - \log0{,}5\)
11. \(\log 0{,}04 - \log4\)
12. \(\log 25 + \log0{,}4\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 250 + \log0{,}04\\ = \log(250 \cdot 0{,}04 ) \\ = \log ( 10) \\ =1\)
2. \(\log 20 + \log0{,}005\\ = \log(20 \cdot 0{,}005 ) \\ = \log ( 0{,}1) \\ =-1\)
3. \(\log 2000 - \log200\\ = \log(2000 : 200 ) \\ = \log ( 10) \\ =1\)
4. \(\log 100 + \log1\\ = \log(100 \cdot 1 ) \\ = \log ( 100) \\ =2\)
5. \(\log 250000 - \log250\\ = \log(250000 : 250 ) \\ = \log ( 1000) \\ =3\)
6. \(\log 5000 - \log500\\ = \log(5000 : 500 ) \\ = \log ( 10) \\ =1\)
7. \(\log 40 - \log40\\ = \log(40 : 40 ) \\ = \log ( 1) \\ =0\)
8. \(\log 40 + \log0{,}025\\ = \log(40 \cdot 0{,}025 ) \\ = \log ( 1) \\ =0\)
9. \(\log 2 - \log0{,}2\\ = \log(2 : 0{,}2 ) \\ = \log ( 10) \\ =1\)
10. \(\log 0{,}5 - \log0{,}5\\ = \log(0{,}5 : 0{,}5 ) \\ = \log ( 1) \\ =0\)
11. \(\log 0{,}04 - \log4\\ = \log(0{,}04 : 4 ) \\ = \log ( 0{,}01) \\ =-2\)
12. \(\log 25 + \log0{,}4\\ = \log(25 \cdot 0{,}4 ) \\ = \log ( 10) \\ =1\)