Rekenregels (reeks 1)

Hoofdmenu Eentje per keer  🖨

Pas de rekenregels toe en bereken

1. \(\log 10000 - \log100\)
2. \(\log 20 + \log0{,}005\)
3. \(\log 2{,}5 - \log2{,}5\)
4. \(\log 40 - \log0{,}4\)
5. \(\log 4000 - \log4\)
6. \(\log 0{,}5 + \log200\)
7. \(\log 100 + \log0{,}01\)
8. \(\log 20 + \log0{,}0005\)
9. \(\log 2000 - \log2\)
10. \(\log 800 - \log80\)
11. \(\log 200 + \log5{,}0E-5\)
12. \(\log 100 + \log100\)

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Pas de rekenregels toe en bereken

Verbetersleutel

1. \(\log 10000 - \log100\\ = \log(10000 : 100 ) \\ = \log ( 100) \\ =2\)
2. \(\log 20 + \log0{,}005\\ = \log(20 \cdot 0{,}005 ) \\ = \log ( 0{,}1) \\ =-1\)
3. \(\log 2{,}5 - \log2{,}5\\ = \log(2{,}5 : 2{,}5 ) \\ = \log ( 1) \\ =0\)
4. \(\log 40 - \log0{,}4\\ = \log(40 : 0{,}4 ) \\ = \log ( 100) \\ =2\)
5. \(\log 4000 - \log4\\ = \log(4000 : 4 ) \\ = \log ( 1000) \\ =3\)
6. \(\log 0{,}5 + \log200\\ = \log(0{,}5 \cdot 200 ) \\ = \log ( 100) \\ =2\)
7. \(\log 100 + \log0{,}01\\ = \log(100 \cdot 0{,}01 ) \\ = \log ( 1) \\ =0\)
8. \(\log 20 + \log0{,}0005\\ = \log(20 \cdot 0{,}0005 ) \\ = \log ( 0{,}01) \\ =-2\)
9. \(\log 2000 - \log2\\ = \log(2000 : 2 ) \\ = \log ( 1000) \\ =3\)
10. \(\log 800 - \log80\\ = \log(800 : 80 ) \\ = \log ( 10) \\ =1\)
11. \(\log 200 + \log5{,}0E-5\\ = \log(200 \cdot 5{,}0E-5 ) \\ = \log ( 0{,}01) \\ =-2\)
12. \(\log 100 + \log100\\ = \log(100 \cdot 100 ) \\ = \log ( 10000) \\ =4\)