Cov txheej txheem sib txawv
Peb tuaj yeem hloov cov chav ntsuas los ntawm ib lub kaw lus ntawm cov chav ntsuas mus rau lwm qhov, xws li los ntawm British System mus rau International System , lossis rov qab los. Piv txwv li, yog tias peb ntsuas qhov ntev ntawm lub rooj siv tus pas ntsuas hauv nti (British System) thiab xav qhia qhov ntev hauv meters (International System), peb tuaj yeem hloov qhov kev ntsuas los ntawm nti mus rau meters. Qhov kev hloov pauv no tuaj yeem ua tiav los ntawm kev siv tus lej hloov pauv.
Tib lub kaw lus ntawm cov chav nyob
Peb kuj tseem tuaj yeem hloov cov chav nyob hauv tib lub kaw lus ntawm cov chav, xws li Lub Txheej Txheem Thoob Ntiaj Teb ntawm Cov Chav. Piv txwv li, peb paub qhov hnyav ntawm ib yam khoom hauv grams (g) thiab xav hloov nws mus rau kilograms (kg); lossis peb paub qhov deb ntawm ob qho chaw hauv kilometers (km) thiab xav hloov nws mus rau meters (m). Cov kev hloov pauv chav no tuaj yeem ua tau los ntawm kev siv cov yam ntxwv hloov pauv lossis siv cov ntaiv hloov pauv.
Cov ntaiv hloov pauv pawg
ntaiv hloov pauv qhov ntev
Cov yam ntxwv hloov pauv SI rau qhov ntev thiab qhov hnyav
Piv txwv txog teeb meem
Kawm cov lus sib tham hauv qab no txog kev hloov pauv chav thiab tom qab ntawd ua haujlwm rau cov lus nug txog kev hloov pauv chav ntawm cov chav thoob ntiaj teb.
Tus nqi tseem ceeb
Cov chav ntawm qhov ntev
1. 10 km = ….. meters? (10)(1000) = 10.000 'meter'
2. 10 km = . . . . (10)(100.000) = 1000.000 cm
3. 10 km = ….. hli? (10)(1000.000) = 10.000.000 hli
4. 10 meters = …… km? 10 / 1000 = 1 / 100 = 0,01 km
5.10 cm = . . . 10/100.000 = 1/10.000 = 0,0001 km
6. 10 hli = ….. km? 10 / 1000.000 = 1 / 100.000 = 0,00001 km
7. 10 meters = ….. cm? (10)(100) = 1000 cm
8. 10 meters = ….. mm? (10)(1000) = 10.000 hli
9. 10 cm = ….. hli? (10)(10) = 100 hli
10. 10 cm = ….. meters? 10 / 100 = 1 / 10 = 0,1 'meter'
11. 10 hli = ….. meters? 10 / 1000 = 1 / 100 = 0,01 'meter'
12. 10 hli = ….. cm? 10 / 10 = 1 'meter'
Chav ntawm pawg
1. 10 kg = ….. grams? (10)(1000) = 10.000 gram
2. 10 kg = ….. mg? (10)(1000.000) = 10.000.000 mg
3. 10 grams = ….. mg? (10)(1000) = 10.000 mg
4. 10 grams = …… kg? 10 / 1000 = 1 / 100 = 0,01 kg
5. 10 mg = ….. kg? 10 / 1000.000 = 1 / 100.000 = 0,00001 kg
6. 10 mg = ….. grams? 10 / 1000 = 1 / 100 = 0,01 gram
Chav ntawm lub sijhawm
1. 2 teev = …. feeb ? (2)(60) = 120 feeb
2. 2 teev = .... vib nas this ? (2)(3600) = 7200 vib nas this
3. 2 feeb = …. vib nas this ? (2)(60) = 120 vib nas this
4. 2 vib nas this = .... milliseconds? (2)(1000) = 2000 milliseconds
Cov chav ntsuas uas tau los ntawm kev ntsuas
1. 2 kPa (kilo Pascal) =…..Pascal? (2) (1000) = 1000 Pascals
2. 2 kW (kilo Watt) = …… Watts? (2)(1000) = 1000 Watts
3. 2 MV (mega Volt) = …… Volts? (2)(1000.000) = 1000.000 Volts
4. 2 GHz (giga hertz) = …… Hertz ? (2)(1000.000.000) = 2.000.000.000 Hertz
5. 2 km/teev = ….. m/s? (2)(1000 m) / 3600 s = 0,5 m/s
6. 2 m/s = …… km/teev ? (2)(0,001 km) / 0,00027 teev = 7,4 km/teev
