Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 0{,}4 + \log25000\)
2. \(\log 2000 - \log200\)
3. \(\log 8 - \log8\)
4. \(\log 2 + \log50\)
5. \(\log 5 + \log0{,}002\)
6. \(\log 1 + \log1000\)
7. \(\log 0{,}5 + \log200\)
8. \(\log 500 - \log50\)
9. \(\log 80 + \log125\)
10. \(\log 250 + \log0{,}04\)
11. \(\log 25 + \log4\)
12. \(\log 4000 - \log4\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 0{,}4 + \log25000\\ = \log(0{,}4 \cdot 25000 ) \\ = \log ( 10000) \\ =4\)
2. \(\log 2000 - \log200\\ = \log(2000 : 200 ) \\ = \log ( 10) \\ =1\)
3. \(\log 8 - \log8\\ = \log(8 : 8 ) \\ = \log ( 1) \\ =0\)
4. \(\log 2 + \log50\\ = \log(2 \cdot 50 ) \\ = \log ( 100) \\ =2\)
5. \(\log 5 + \log0{,}002\\ = \log(5 \cdot 0{,}002 ) \\ = \log ( 0{,}01) \\ =-2\)
6. \(\log 1 + \log1000\\ = \log(1 \cdot 1000 ) \\ = \log ( 1000) \\ =3\)
7. \(\log 0{,}5 + \log200\\ = \log(0{,}5 \cdot 200 ) \\ = \log ( 100) \\ =2\)
8. \(\log 500 - \log50\\ = \log(500 : 50 ) \\ = \log ( 10) \\ =1\)
9. \(\log 80 + \log125\\ = \log(80 \cdot 125 ) \\ = \log ( 10000) \\ =4\)
10. \(\log 250 + \log0{,}04\\ = \log(250 \cdot 0{,}04 ) \\ = \log ( 10) \\ =1\)
11. \(\log 25 + \log4\\ = \log(25 \cdot 4 ) \\ = \log ( 100) \\ =2\)
12. \(\log 4000 - \log4\\ = \log(4000 : 4 ) \\ = \log ( 1000) \\ =3\)