Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 5 + \log0{,}2\)
2. \(\log 0{,}5 + \log2000\)
3. \(\log 0{,}8 + \log0{,}0125\)
4. \(\log 5 + \log2000\)
5. \(\log 100 + \log0{,}0001\)
6. \(\log 5 - \log5\)
7. \(\log 250 + \log0{,}4\)
8. \(\log 200 - \log2\)
9. \(\log 50 + \log0{,}02\)
10. \(\log 80 - \log0{,}8\)
11. \(\log 0{,}4 - \log0{,}4\)
12. \(\log 250 + \log4\)

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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. \(\log 0{,}5 + \log2000\\ = \log(0{,}5 \cdot 2000 ) \\ = \log ( 1000) \\ =3\)
3. \(\log 0{,}8 + \log0{,}0125\\ = \log(0{,}8 \cdot 0{,}0125 ) \\ = \log ( 0{,}01) \\ =-2\)
4. \(\log 5 + \log2000\\ = \log(5 \cdot 2000 ) \\ = \log ( 10000) \\ =4\)
5. \(\log 100 + \log0{,}0001\\ = \log(100 \cdot 0{,}0001 ) \\ = \log ( 0{,}01) \\ =-2\)
6. \(\log 5 - \log5\\ = \log(5 : 5 ) \\ = \log ( 1) \\ =0\)
7. \(\log 250 + \log0{,}4\\ = \log(250 \cdot 0{,}4 ) \\ = \log ( 100) \\ =2\)
8. \(\log 200 - \log2\\ = \log(200 : 2 ) \\ = \log ( 100) \\ =2\)
9. \(\log 50 + \log0{,}02\\ = \log(50 \cdot 0{,}02 ) \\ = \log ( 1) \\ =0\)
10. \(\log 80 - \log0{,}8\\ = \log(80 : 0{,}8 ) \\ = \log ( 100) \\ =2\)
11. \(\log 0{,}4 - \log0{,}4\\ = \log(0{,}4 : 0{,}4 ) \\ = \log ( 1) \\ =0\)
12. \(\log 250 + \log4\\ = \log(250 \cdot 4 ) \\ = \log ( 1000) \\ =3\)