Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 2 + \log500\)
2. \(\log 2{,}5 + \log400\)
3. \(\log 2{,}5 - \log250\)
4. \(\log 20 + \log0{,}0005\)
5. \(\log 8 - \log80\)
6. \(\log 0{,}4 + \log0{,}025\)
7. \(\log 40 + \log0{,}25\)
8. \(\log 100 + \log1\)
9. \(\log 0{,}2 - \log2\)
10. \(\log 0{,}008 - \log0{,}8\)
11. \(\log 20 + \log0{,}5\)
12. \(\log 100 + \log0{,}001\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 2 + \log500\\ = \log(2 \cdot 500 ) \\ = \log ( 1000) \\ =3\)
2. \(\log 2{,}5 + \log400\\ = \log(2{,}5 \cdot 400 ) \\ = \log ( 1000) \\ =3\)
3. \(\log 2{,}5 - \log250\\ = \log(2{,}5 : 250 ) \\ = \log ( 0{,}01) \\ =-2\)
4. \(\log 20 + \log0{,}0005\\ = \log(20 \cdot 0{,}0005 ) \\ = \log ( 0{,}01) \\ =-2\)
5. \(\log 8 - \log80\\ = \log(8 : 80 ) \\ = \log ( 0{,}1) \\ =-1\)
6. \(\log 0{,}4 + \log0{,}025\\ = \log(0{,}4 \cdot 0{,}025 ) \\ = \log ( 0{,}01) \\ =-2\)
7. \(\log 40 + \log0{,}25\\ = \log(40 \cdot 0{,}25 ) \\ = \log ( 10) \\ =1\)
8. \(\log 100 + \log1\\ = \log(100 \cdot 1 ) \\ = \log ( 100) \\ =2\)
9. \(\log 0{,}2 - \log2\\ = \log(0{,}2 : 2 ) \\ = \log ( 0{,}1) \\ =-1\)
10. \(\log 0{,}008 - \log0{,}8\\ = \log(0{,}008 : 0{,}8 ) \\ = \log ( 0{,}01) \\ =-2\)
11. \(\log 20 + \log0{,}5\\ = \log(20 \cdot 0{,}5 ) \\ = \log ( 10) \\ =1\)
12. \(\log 100 + \log0{,}001\\ = \log(100 \cdot 0{,}001 ) \\ = \log ( 0{,}1) \\ =-1\)