Rekenregels (reeks 1)

Pas de rekenregels toe en bereken

1. $$\log 50 + \log0,0002$$
2. $$\log 25 + \log0,004$$
3. $$\log 50 + \log0,2$$
4. $$\log 200000 - \log20$$
5. $$\log 2 + \log0,005$$
6. $$\log 0,2 + \log0,05$$
7. $$\log 5 + \log200$$
8. $$\log 0,008 - \log0,8$$
9. $$\log 10 + \log100$$
10. $$\log 800 - \log0,8$$
11. $$\log 0,2 - \log2$$
12. $$\log 2 + \log5000$$

Pas de rekenregels toe en bereken

Verbetersleutel

1. $$\log 50 + \log0,0002\\ = \log(50 \cdot 0,0002 ) \\ = \log ( 0,01) \\ =-2$$
2. $$\log 25 + \log0,004\\ = \log(25 \cdot 0,004 ) \\ = \log ( 0,1) \\ =-1$$
3. $$\log 50 + \log0,2\\ = \log(50 \cdot 0,2 ) \\ = \log ( 10) \\ =1$$
4. $$\log 200000 - \log20\\ = \log(200000 : 20 ) \\ = \log ( 10000) \\ =4$$
5. $$\log 2 + \log0,005\\ = \log(2 \cdot 0,005 ) \\ = \log ( 0,01) \\ =-2$$
6. $$\log 0,2 + \log0,05\\ = \log(0,2 \cdot 0,05 ) \\ = \log ( 0,01) \\ =-2$$
7. $$\log 5 + \log200\\ = \log(5 \cdot 200 ) \\ = \log ( 1000) \\ =3$$
8. $$\log 0,008 - \log0,8\\ = \log(0,008 : 0,8 ) \\ = \log ( 0,01) \\ =-2$$
9. $$\log 10 + \log100\\ = \log(10 \cdot 100 ) \\ = \log ( 1000) \\ =3$$
10. $$\log 800 - \log0,8\\ = \log(800 : 0,8 ) \\ = \log ( 1000) \\ =3$$
11. $$\log 0,2 - \log2\\ = \log(0,2 : 2 ) \\ = \log ( 0,1) \\ =-1$$
12. $$\log 2 + \log5000\\ = \log(2 \cdot 5000 ) \\ = \log ( 10000) \\ =4$$
Oefeningengenerator vanhoeckes.be/wiskunde 2022-06-27 07:17:39