Kuyera nenhamba dzakakosha - matambudziko nemhinduro
1. Kureba kwechinhu chinoyerwa uchishandisa micrometer kureba kwayo kuri 15.08 mmSarudza kuti nhamba dzakakosha uye huwandu hwenhamba dzakakosha.
A. 15.08 mm uye nhatu nhamba dzakakosha
B. 1.508 mm uye mana nhamba dzakakosha
C. 15.08 mm uye mana nhamba dzakakosha
D. 1.508 mm uye nhatu nhamba dzakakosha
Solution:
Nhamba dzakakosha = 15.08 mm
Huwandu hwenhamba dzakakosha = 4
Mhinduro chaiyo ndeinoti C.
2. Mudzidzi anoyera huwandu hwechirongo achishandisa kapu diki ine huwandu hwe125 cm3. Mudziyo uzere mushure mekuzadzwa nemakapu makumi maviri nehafu. Sarudza huwandu hwemudziyo zvichibva pamitemo yakakosha yemufananidzo.
A. 2562.5 cm3
B. 2.56 x 103 cm3
C. 2563 cm3
D. 2.56 x 10-3 m3
Solution:
Hurumu yekapu = 125 cm3
Huremu hwemudziyo = 20.5 x 125 cm3 = 2562.5 masendimita3
Mhinduro chaiyo ndeinoti A.
3. Sarudza tmhedzisiro yekuyera chinhu sezvakaratidzwa mumufananidzo uri pazasi, zvichienderana nemitemo yenhamba dzakakosha.
A. 4.5 mm
B. 4.6 mm
C. 4.6 mm
D. 4.6 mm
Solution:
Chikero chikuru = 4.5 mm
Chikero chechipiri = 11 x 0.01 mm = 0.1 mm (zvinoenderana nemitemo yekuwanda kwenhamba dzakakosha)
Tmhedzisiro yekuyera = 4.5 mm + 0.1 mm = 4.6 mm (zvichienderana nemitemo yekuunganidzwa kwenhamba dzakakosha)
Mhinduro chaiyo ndeinoti C.
1. Dambudziko: Kutenderera nhamba dzakakosha kubva pa27.6891 kusvika kunhamba ina dzakakosha.
Solution: 27.69 (nekuti 1 haikanganisi nzvimbo yechitatu yedesimali).
2. Dambudziko: Kana ukawanza 6.34 (3 zvakakosha) ne5.678 (4 zvakakosha), mhinduro yako inofanira kuva nenhamba ngani dzakakosha?
Solution: Mhinduro yacho inofanira kunge iine nhamba nhatu dzakakosha.
3. Dambudziko: Musayendisiti akanyora mhedzisiro yemagiramu 5001. Kukosha uku kune nhamba ngani dzakakosha?
Solution: Nhamba ina dzakakosha.
4. Dambudziko: Chii chinobuda kana ukawedzera 24.5 (nhamba nhatu dzakakosha) uye 1.789 (nhamba ina dzakakosha)?
Solution: Huwandu hwacho i26.289, asi tichifunga nezvenhamba inokosha, unofanira kutenderedza kusvika pa26.3.
5. Dambudziko: Kana kuyedza kwefizikisi kuchipa kumhanya kwe0.0056078 m/s, pane nhamba dzingani dzakakosha?
Solution: Nhamba ina dzakakosha.
6. Dambudziko: Kutenderera nhamba dzakakosha kubva pa0.007809 kusvika kunhamba ina dzakakosha.
Solution: 0.007809 (nekuti yatova nenhamba ina dzakakosha).
7. Dambudziko: Pakuyera kudzika kwetsime, unowana kukosha kwemamita 78.00. Gare gare, kumwe kuverenga kunoti mamita 78.0001. Kana ukaita avhareji yemakoshero, mhinduro yako inofanira kuva nemanhamba mangani akakosha?
Solution: Avhareji inofanira kunge iine nhamba ina dzakakosha. Saka, 78.00 + = 78.00012 78.00005 inova 78.00.
8. Dambudziko: Unoyera upamhi hwebhuku se150 mm. Pane nhamba dzinoverengeka dzakakosha here?
Solution: Nhamba ina dzakakosha.
9. Dambudziko: Chii chinoguma chaitika kana ukagovanisa 90.12 (nhamba ina dzakakosha) ne4.0 (nhamba mbiri dzakakosha)?
Solution: Mhedzisiro yacho i22.53, asi tichifunga nezvenhamba dzakakosha, mhinduro yacho inofanira kutenderedzwa kusvika pa23.
10. Dambudziko: Unoyera marita 0.4000 emvura A uye marita 0.4020 emvura B. Paunenge uchinyora huwandu hwese, unofanira kunyora mhinduro yako kunzvimbo ngani dzedesimali?
Solution: Unofanira kutenderedza kusvika kunzvimbo ina dzedesimali. Saka, 0.4000 + = 0.4020 0.8020.
11. Dambudziko: Kutenderera nhamba dzakakosha kubva pa50.0012 kusvika ku50.0012.
Solution: 50.001 (nekuti 2 haikanganisi nzvimbo yechina yedesimali).
12. Dambudziko: Pakubvisa 45.67 (4 zvakakosha) kubva pa100.1 (4 zvakakosha), mhinduro yako inofanira kuva nenhamba ngani dzakakosha?
Solution: Mhinduro yacho inofanira kunge iine nhamba ina dzakakosha. Saka, 100.1 – 45.67 = 54.43.
13. Dambudziko: Mhedzisiro yacho yakanyorwa se1020 isina poindi yedesimali. Iyi ine nhamba ngani dzakakosha?
Solution: Nhamba ina dzakakosha.
14. Dambudziko: Chii chinobuda kana ukabvisa 2.3456 (5 significant figures) kubva pa5.00 (3 significant figures)?
Solution: Mhedzisiro yacho i2.6544, asi tichifunga nezvenhamba dzakakosha, unofanira kutenderedza kusvika pa2.65.
15. Dambudziko: Mangani akakosha manhamba ari mu nhamba 0.005002?
Solution: Nhamba ina dzakakosha.
16. Dambudziko: Kutenderera nhamba nhatu dzakakosha kubva pa10.4987.
Solution: 10.5.
17. Dambudziko: Unowana kuverenga kwevoltage ye50.00 V kubva kune chimwe chishandiso uye 50.0005 V kubva kune chimwe. Kana ukaita avhareji yekuverenga, mhinduro dzacho dzinofanira kuva nenhamba ngani dzakakosha?
Solution: Avhareji inofanira kunge iine nhamba ina dzakakosha. Saka, 50.00 + = 50.00052 50.00025 inova 50.00.
18. Dambudziko: Kureba kwetsvimbo kunoyerwa kuita 200 mm. Chiyero ichi chine nhamba ngani dzakakosha?
Solution: Nhamba imwe inokosha.
19. Dambudziko: Uri kupatsanura 4.56 (3 manhamba akakosha) ne2.0 (2 manhamba akakosha). Ndeipi nhamba yenhamba dzakakosha mumhinduro?
Solution: Mhinduro yacho inofanira kunge iine nhamba mbiri dzakakosha. Saka, 4.56 ÷ 2.0 = 2.28.
20. Dambudziko: Daro rakayerwa pakati pemaguta maviri i100.50 km. Chiyero ichi chine nhamba dzingani dzakakosha?
Solution: Nhamba ina dzakakosha.
