Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 0{,}5 + \log2000\)
2. \(\log 2 - \log20\)
3. \(\log 4 + \log2500\)
4. \(\log 100000 - \log100\)
5. \(\log 8 - \log8\)
6. \(\log 250 + \log0{,}004\)
7. \(\log 40 + \log0{,}00025\)
8. \(\log 50 + \log20\)
9. \(\log 0{,}8 + \log1250\)
10. \(\log 5 + \log0{,}02\)
11. \(\log 0{,}2 + \log0{,}05\)
12. \(\log 0{,}4 + \log25\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 0{,}5 + \log2000\\ = \log(0{,}5 \cdot 2000 ) \\ = \log ( 1000) \\ =3\)
2. \(\log 2 - \log20\\ = \log(2 : 20 ) \\ = \log ( 0{,}1) \\ =-1\)
3. \(\log 4 + \log2500\\ = \log(4 \cdot 2500 ) \\ = \log ( 10000) \\ =4\)
4. \(\log 100000 - \log100\\ = \log(100000 : 100 ) \\ = \log ( 1000) \\ =3\)
5. \(\log 8 - \log8\\ = \log(8 : 8 ) \\ = \log ( 1) \\ =0\)
6. \(\log 250 + \log0{,}004\\ = \log(250 \cdot 0{,}004 ) \\ = \log ( 1) \\ =0\)
7. \(\log 40 + \log0{,}00025\\ = \log(40 \cdot 0{,}00025 ) \\ = \log ( 0{,}01) \\ =-2\)
8. \(\log 50 + \log20\\ = \log(50 \cdot 20 ) \\ = \log ( 1000) \\ =3\)
9. \(\log 0{,}8 + \log1250\\ = \log(0{,}8 \cdot 1250 ) \\ = \log ( 1000) \\ =3\)
10. \(\log 5 + \log0{,}02\\ = \log(5 \cdot 0{,}02 ) \\ = \log ( 0{,}1) \\ =-1\)
11. \(\log 0{,}2 + \log0{,}05\\ = \log(0{,}2 \cdot 0{,}05 ) \\ = \log ( 0{,}01) \\ =-2\)
12. \(\log 0{,}4 + \log25\\ = \log(0{,}4 \cdot 25 ) \\ = \log ( 10) \\ =1\)