Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 250000 - \log250\)
2. \(\log 1 + \log0{,}01\)
3. \(\log 50 + \log20\)
4. \(\log 0{,}08 - \log8\)
5. \(\log 250 + \log0{,}4\)
6. \(\log 25000 - \log2{,}5\)
7. \(\log 4 - \log4\)
8. \(\log 80000 - \log80\)
9. \(\log 0{,}04 - \log0{,}4\)
10. \(\log 50000 - \log5\)
11. \(\log 80 + \log0{,}000125\)
12. \(\log 200 + \log0{,}005\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 250000 - \log250\\ = \log(250000 : 250 ) \\ = \log ( 1000) \\ =3\)
2. \(\log 1 + \log0{,}01\\ = \log(1 \cdot 0{,}01 ) \\ = \log ( 0{,}01) \\ =-2\)
3. \(\log 50 + \log20\\ = \log(50 \cdot 20 ) \\ = \log ( 1000) \\ =3\)
4. \(\log 0{,}08 - \log8\\ = \log(0{,}08 : 8 ) \\ = \log ( 0{,}01) \\ =-2\)
5. \(\log 250 + \log0{,}4\\ = \log(250 \cdot 0{,}4 ) \\ = \log ( 100) \\ =2\)
6. \(\log 25000 - \log2{,}5\\ = \log(25000 : 2{,}5 ) \\ = \log ( 10000) \\ =4\)
7. \(\log 4 - \log4\\ = \log(4 : 4 ) \\ = \log ( 1) \\ =0\)
8. \(\log 80000 - \log80\\ = \log(80000 : 80 ) \\ = \log ( 1000) \\ =3\)
9. \(\log 0{,}04 - \log0{,}4\\ = \log(0{,}04 : 0{,}4 ) \\ = \log ( 0{,}1) \\ =-1\)
10. \(\log 50000 - \log5\\ = \log(50000 : 5 ) \\ = \log ( 10000) \\ =4\)
11. \(\log 80 + \log0{,}000125\\ = \log(80 \cdot 0{,}000125 ) \\ = \log ( 0{,}01) \\ =-2\)
12. \(\log 200 + \log0{,}005\\ = \log(200 \cdot 0{,}005 ) \\ = \log ( 1) \\ =0\)