Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 80 + \log0{,}0125\)
2. \(\log 200 + \log0{,}5\)
3. \(\log 80 + \log0{,}125\)
4. \(\log 500 - \log0{,}5\)
5. \(\log 100 + \log0{,}01\)
6. \(\log 40000 - \log40\)
7. \(\log 20 - \log2\)
8. \(\log 10 - \log10\)
9. \(\log 500 + \log0{,}2\)
10. \(\log 250 + \log0{,}04\)
11. \(\log 8 - \log0{,}8\)
12. \(\log 0{,}8 + \log125\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 80 + \log0{,}0125\\ = \log(80 \cdot 0{,}0125 ) \\ = \log ( 1) \\ =0\)
2. \(\log 200 + \log0{,}5\\ = \log(200 \cdot 0{,}5 ) \\ = \log ( 100) \\ =2\)
3. \(\log 80 + \log0{,}125\\ = \log(80 \cdot 0{,}125 ) \\ = \log ( 10) \\ =1\)
4. \(\log 500 - \log0{,}5\\ = \log(500 : 0{,}5 ) \\ = \log ( 1000) \\ =3\)
5. \(\log 100 + \log0{,}01\\ = \log(100 \cdot 0{,}01 ) \\ = \log ( 1) \\ =0\)
6. \(\log 40000 - \log40\\ = \log(40000 : 40 ) \\ = \log ( 1000) \\ =3\)
7. \(\log 20 - \log2\\ = \log(20 : 2 ) \\ = \log ( 10) \\ =1\)
8. \(\log 10 - \log10\\ = \log(10 : 10 ) \\ = \log ( 1) \\ =0\)
9. \(\log 500 + \log0{,}2\\ = \log(500 \cdot 0{,}2 ) \\ = \log ( 100) \\ =2\)
10. \(\log 250 + \log0{,}04\\ = \log(250 \cdot 0{,}04 ) \\ = \log ( 10) \\ =1\)
11. \(\log 8 - \log0{,}8\\ = \log(8 : 0{,}8 ) \\ = \log ( 10) \\ =1\)
12. \(\log 0{,}8 + \log125\\ = \log(0{,}8 \cdot 125 ) \\ = \log ( 100) \\ =2\)