Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 2000 - \log20\)
2. \(\log 1000000 - \log100\)
3. \(\log 40 + \log2{,}5\)
4. \(\log 0{,}5 + \log0{,}02\)
5. \(\log 2{,}5 - \log2{,}5\)
6. \(\log 0{,}02 - \log2\)
7. \(\log 250000 - \log25\)
8. \(\log 500 + \log0{,}0002\)
9. \(\log 8 + \log1250\)
10. \(\log 0{,}5 + \log200\)
11. \(\log 4 - \log4\)
12. \(\log 50 - \log50\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 2000 - \log20\\ = \log(2000 : 20 ) \\ = \log ( 100) \\ =2\)
2. \(\log 1000000 - \log100\\ = \log(1000000 : 100 ) \\ = \log ( 10000) \\ =4\)
3. \(\log 40 + \log2{,}5\\ = \log(40 \cdot 2{,}5 ) \\ = \log ( 100) \\ =2\)
4. \(\log 0{,}5 + \log0{,}02\\ = \log(0{,}5 \cdot 0{,}02 ) \\ = \log ( 0{,}01) \\ =-2\)
5. \(\log 2{,}5 - \log2{,}5\\ = \log(2{,}5 : 2{,}5 ) \\ = \log ( 1) \\ =0\)
6. \(\log 0{,}02 - \log2\\ = \log(0{,}02 : 2 ) \\ = \log ( 0{,}01) \\ =-2\)
7. \(\log 250000 - \log25\\ = \log(250000 : 25 ) \\ = \log ( 10000) \\ =4\)
8. \(\log 500 + \log0{,}0002\\ = \log(500 \cdot 0{,}0002 ) \\ = \log ( 0{,}1) \\ =-1\)
9. \(\log 8 + \log1250\\ = \log(8 \cdot 1250 ) \\ = \log ( 10000) \\ =4\)
10. \(\log 0{,}5 + \log200\\ = \log(0{,}5 \cdot 200 ) \\ = \log ( 100) \\ =2\)
11. \(\log 4 - \log4\\ = \log(4 : 4 ) \\ = \log ( 1) \\ =0\)
12. \(\log 50 - \log50\\ = \log(50 : 50 ) \\ = \log ( 1) \\ =0\)