Tekanyo le lipalo tsa bohlokoa - mathata le litharollo

1. Bolelele ba ntho e lekantsweng ka ho sebedisa micrometer ke 15.08 mm . Fumana dipalo tsa bohlokwa le palo ya dipalo tsa bohlokwa.

A. 15.08 mm le lipalo tse tharo tsa bohlokoa

B. 1.508 mm le lipalo tse 'ne tsa bohlokoa

C. 15.08 mm le lipalo tse 'ne tsa bohlokoa

D. 1.508 mm le lipalo tse tharo tsa bohlokoa

Tharollo:

Lipalo tse bohlokoa = 15.08 mm

Palo ea lipalo tsa bohlokoa = 4

Karabo e nepahetseng ke C.

2. Seithuti se lekanya bophahamo ba setshelo se sebedisa kopi e nyane e nang le bophahamo ba 125 cm ^3. Setshelo se tletse ka mora ho tlatswa ka dikopi tse mashome a mabedi le halofo. Fumana bophahamo ba setshelo ho latela melao ya bohlokwa ya setshwantsho.

A. 2562.5 cm ³

B. 2.56 x 10 ³ cm ³

C. 2563 cm ³

D. 2.56 x 10 ^-3 m ³

Tharollo:

Bophahamo ba kopi = 125 cm ³

Bophahamo ba setshelo = 20.5 x 125 cm ³ = 2562.5 cm ³

Karabo e nepahetseng ke A.

3. Fumana hore na ke engsephetho sa ho lekanya ntho jwalo ka ha ho bontshitswe setshwantshong se ka tlase, ho ya ka melao ya dipalo tse bohlokwa.

A. 4.5 mm Tekanyo le lipalo tsa bohlokoa - mathata le litharollo

B. 4.6 mm

Bolelele ba 4.6 mm

D. 4.6 mm

Tharollo:

Sekala se seholo = 4.5 mm

Sekala sa bobeli = 11 x 0.01 mm = 0.1 mm (ho latela melao ea katiso ea lipalo tsa bohlokoa)

bona le Ho eketsa li-vector ho sebelisa likarolo - mathata le litharollo

Tsephetho sa ho lekanya = 4.5 mm + 0.1 mm = 4.6 mm (ho latela melao ea kakaretso ea lipalo tsa bohlokoa)

Karabo e nepahetseng ke C.

1. Bothata: Potoloha lipalo tse 'ne tsa bohlokoa ho tloha ho 27.6891.

Tharollo: 27.69 (hobane 1 ha e ame sebaka sa boraro sa desimali).

2. Bothata: Haeba o atisa 6.34 (dipalo tse 3 tsa bohlokwa) ka 5.678 (dipalo tse 4 tsa bohlokwa), karabo ya hao e lokela ho ba le dipalo tse kae tsa bohlokwa?

Tharollo: Karabo e lokela ho ba le lipalo tse 3 tsa bohlokoa.

3. Bothata: Rasaense o tlalehile sephetho sa digrama tse 5001. Boleng bona bo na le dipalo tse kae tsa bohlokwa?

Tharollo: Lipalo tse 4 tsa bohlokoa.

4. Bothata: Sephetho ke sefe ha o eketsa 24.5 (dipalo tse 3 tsa bohlokwa) le 1.789 (dipalo tse 4 tsa bohlokwa)?

Tharollo: Kakaretso ke 26.289, empa ha o nahana ka palo e bohlokwa, o lokela ho e potoloha ho 26.3.

5. Bothata: Haeba teko ea fisiks e fana ka lebelo la 0.0056078 m/s, ho na le lipalo tse kae tsa bohlokoa?

Tharollo: Lipalo tse 5 tsa bohlokoa.

6. Bothata: Potoloha lipalo tse 'ne tsa bohlokoa ho tloha ho 0.007809.

Tharollo: 0.007809 (hobane e se e ntse e na le lipalo tse 'ne tsa bohlokoa).

7. Bothata: Ha o lekanya botebo ba seliba, o fumana boleng ba limithara tse 78.00. Hamorao, palo e 'ngoe e re limithara tse 78.0001. Haeba u lekanya boleng, karabo ea hau e lokela ho ba le lipalo tse kae tsa bohlokoa?

bona le Mocheso le phetoho ea mekhahlelo - mathata le litharollo

Tharollo: Karolelano e lokela ho ba le lipalo tse 4 tsa bohlokoa. Kahoo, $2 78.00 + 78.0001 = 78.00005$ e fetoha 78.00.

8. Bothata: U lekanya bophara ba buka e le 150 mm. Ho na le lipalo tse kae tsa bohlokoa?

Tharollo: Lipalo tse 2 tsa bohlokoa.

9. Bothata: Sephetho ke sefe ha o arola 90.12 (lipalo tse 4 tsa bohlokoa) ka 4.0 (lipalo tse 2 tsa bohlokoa)?

Tharollo: Sephetho ke 22.53, empa ha ho nahanoa ka lipalo tse bohlokoa, karabo e lokela ho phethoa ho 23.

10. Bothata: U lekanya lilithara tse 0.4000 tsa mokelikeli A le lilithara tse 0.4020 tsa mokelikeli B. Ha u tlaleha kakaretso ea bophahamo, u lokela ho tlaleha karabo ea hau libakeng tse kae tsa desimali?

Tharollo: O lokela ho potoloha ho isa libakeng tse 4 tsa desimali. Kahoo, $0.4000 + 0.4020 = 0.8020$ .

11. Bothata: Potoloha lipalo tse 50.0012 ho isa ho tse hlano tsa bohlokoa.

Tharollo: 50.001 (hobane 2 ha e ame sebaka sa bone sa desimali).

12. Bothata: Ha o tlosa 45.67 (dipalo tse 4 tsa bohlokwa) ho 100.1 (dipalo tse 4 tsa bohlokwa), karabo ya hao e lokela ho ba le dipalo tse kae tsa bohlokwa?

Tharollo: Karabo e lokela ho ba le lipalo tse 4 tsa bohlokoa. Kahoo, 100.1 – 45.67 = 54.43.

13. Bothata: Sephetho se tlalehiloe e le 1020 ntle le ntlha ea desimali. See se na le lipalo tse kae tsa bohlokoa?

bona le Likaroloana tse leka-lekaneng la ntlha e le 'ngoe - ts'ebeliso ea mathata le litharollo tsa molao oa pele oa Newton

Tharollo: Lipalo tse 3 tsa bohlokoa.

14. Bothata: Sephetho ke sefe ha o tlosa 2.3456 (lipalo tse 5 tsa bohlokoa) ho 5.00 (lipalo tse 3 tsa bohlokoa)?

Tharollo: Sephetho ke 2.6544, empa ha ho nahanoa ka lipalo tse kholo, o lokela ho potoloha ho 2.65.

15. Bothata: Ke lipalo tse kae tsa bohlokoa palong ea 0.005002?

Tharollo: Lipalo tse 4 tsa bohlokoa.

16. Bothata: Potoloha lipalo tse tharo tsa bohlokoa ho tloha ho 10.4987.

Tharollo: 10.5.

17. Bothata: U fumana ho bala ha motlakase oa 50.00 V ho tsoa sesebelisoa se seng le 50.0005 V ho tsoa ho se seng. Haeba u bala ka karolelano, liphetho li lokela ho ba le lipalo tse kae tsa bohlokoa?

Tharollo: Karolelano e lokela ho ba le lipalo tse 4 tsa bohlokoa. Kahoo, $2 50.00 + 50.0005 = 50.00025$ e fetoha 50.00.

18. Bothata: Bolelele ba thupa bo lekanngoa ho ba 200 mm. Tekanyo ena e na le lipalo tse kae tsa bohlokoa?

Tharollo: Setšoantšo se le seng sa bohlokoa.

19. Bothata: O arola 4.56 (dipalo tse 3 tsa bohlokwa) ka 2.0 (dipalo tse 2 tsa bohlokwa). Palo ya dipalo tsa bohlokwa karabong e lokela ho ba bokae?

Tharollo: Karabo e lokela ho ba le lipalo tse 2 tsa bohlokoa. Kahoo, 4.56 ÷ 2.0 = 2.28.

20. Bothata: Sebaka se lekantsoeng pakeng tsa litoropo tse peli ke 100.50 km. Tekanyo ena e na le lipalo tse kae tsa bohlokoa?

Tharollo: Lipalo tse 5 tsa bohlokoa.