Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 500 + \log0{,}02\)
2. \(\log 0{,}4 + \log250\)
3. \(\log 8 + \log0{,}125\)
4. \(\log 200 + \log50\)
5. \(\log 40 + \log0{,}025\)
6. \(\log 20 + \log500\)
7. \(\log 200 - \log200\)
8. \(\log 80 + \log125\)
9. \(\log 40 + \log2{,}5\)
10. \(\log 0{,}05 - \log0{,}5\)
11. \(\log 50000 - \log5\)
12. \(\log 2{,}5 + \log0{,}004\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 500 + \log0{,}02\\ = \log(500 \cdot 0{,}02 ) \\ = \log ( 10) \\ =1\)
2. \(\log 0{,}4 + \log250\\ = \log(0{,}4 \cdot 250 ) \\ = \log ( 100) \\ =2\)
3. \(\log 8 + \log0{,}125\\ = \log(8 \cdot 0{,}125 ) \\ = \log ( 1) \\ =0\)
4. \(\log 200 + \log50\\ = \log(200 \cdot 50 ) \\ = \log ( 10000) \\ =4\)
5. \(\log 40 + \log0{,}025\\ = \log(40 \cdot 0{,}025 ) \\ = \log ( 1) \\ =0\)
6. \(\log 20 + \log500\\ = \log(20 \cdot 500 ) \\ = \log ( 10000) \\ =4\)
7. \(\log 200 - \log200\\ = \log(200 : 200 ) \\ = \log ( 1) \\ =0\)
8. \(\log 80 + \log125\\ = \log(80 \cdot 125 ) \\ = \log ( 10000) \\ =4\)
9. \(\log 40 + \log2{,}5\\ = \log(40 \cdot 2{,}5 ) \\ = \log ( 100) \\ =2\)
10. \(\log 0{,}05 - \log0{,}5\\ = \log(0{,}05 : 0{,}5 ) \\ = \log ( 0{,}1) \\ =-1\)
11. \(\log 50000 - \log5\\ = \log(50000 : 5 ) \\ = \log ( 10000) \\ =4\)
12. \(\log 2{,}5 + \log0{,}004\\ = \log(2{,}5 \cdot 0{,}004 ) \\ = \log ( 0{,}01) \\ =-2\)