Mibvunzo yeMienzaniso yeZvifananidzo Zvakakosha

Mienzaniso 8 yeZvifananidzo Zvakakosha

1. Kureba kwetambo inoyerwa nemudzidzi i 0,20350 m. Huwandu hwenhamba dzakakosha dziri muchiyero ndehwe…
A. mbiri
B. nhatu
C. mana
D. shanu
E. nhanhatu

Kukurukurirana:
Mhinduro chaiyo ndiD. Manhamba akakosha ndi2, 0, 3, 5, 0. Nhamba 0 iri pamberi pepoindi yedesimali haisi nhamba ikakosha.

2. Mhedzisiro yekuyera kureba kwechinhu i0,02030 m. Mhedzisiro yekuyera ine nhamba yenhamba dzakakosha.
A. mbiri
B. nhatu
C. mana
D. shanu
E. nhanhatu

Kukurukurirana:
Mhinduro chaiyo ndiC. Nhamba dzakakosha ndi2030. Nhamba 0 iri pamberi pekoma uye nhamba 0 iri pamberi penhamba 2 haisi nhamba dzakakosha.

3. Mhedzisiro yekuyera kureba kwechinhu i10,3 cm uye upamhi i6,5 cm. Nzvimbo yechinhu ine nhamba dzakakosha se...
A. matanhatu
B. shanu
C. mana
D. nhatu
E. mbiri

Kukurukurirana:
Mhinduro chaiyo ndiE.
10,3 ine nhamba nhatu dzakakosha, nepo 6,5 ine mbiri. 6,5 ine nhamba shoma dzakakosha, mbiri. Chibereko che10,3 ne6,5 chinofanira kunge chine nhamba mbiri dzakakosha (nhamba shoma dzakakosha). 10,3 x 6,5 = 66,95 = 67.

4. Mhedzisiro yekuyera dhayamita yedenderedzwa i4,50 cm. Denderedzwa redenderedzwa rine nhamba dzakakosha se... (π = 3,14)
A. imwe
B. mbiri
C. nhatu
D. mana
E. shanu

Kukurukurirana:
Mhinduro chaiyo ndiC.
Dhayamita yedenderedzwa i4,50 cm, uye ine nhamba nhatu dzakakosha. Mhedzisiro yekuwanda inofanira kunge iine nhamba nhatu dzakakosha.

5. Mhedzisiro yekuyera kureba nehupamhi hwepasi ndeye 13,23 m uye 4,3 m. Zvichienderana ne mitemo yehuwandu hwevanhu vakakosha, nzvimbo yepasi iri …
A. 56,889 m²
B. 56,89 m²
C. 56,9 m²
D. 56 m²
E. 57 m²

Kukurukurirana:
Mhinduro chaiyo ndiE.
Kureba kwacho kune nhamba ina dzakakosha (13,23) uye upamhi hwacho hune nhamba mbiri dzakakosha (4,3). Zvichienderana nemutemo wekuwanda nhamba dzakakosha, mhedzisiro yacho inofanira kunge iine nhamba dzakakosha dzakawanda sehuwandu hwenhamba dzakakosha, idzo dziri mbiri. 13,23 x 4,3 = 56,889. Mhedzisiro iyi inotenderedzwa kusvika ku57.

6. Chitsauko, mushure mekuyerwa uchishandisa maturusi akasiyana, chine urefu hwe 0,42 cm uye upamhi hwe 0,5 cm. Nzvimbo yechitsauko, ine mifananidzo yakakosha, i… cm.²
A. 0,41
B. 0,21
C. 0,20
D. 0,021
E. 0,2
Kukurukurirana
Zvinozivikanwa kuti:
Kureba = 0,42 cm
upamhi = 0,5 cm
Akabvunzwa: nzvimbo yemativi mana
Mhinduro:
Mutemo wezviverengero zvakakosha mukuwanda nekupatsanura: mhedzisiro yekuwanda kana kupatsanura inofanira kunge iine manhamba akawanda senhamba ine zviverengero zvishoma zvakakosha zvinoshandiswa mukuwanda kana kupatsanura. Muenzaniso: 2,5 x 3,20 = 8,0 (zviverengero zviviri zvakakosha).

Nzvimbo = kureba x upamhi = (0,42 cm)(0,5 cm) = 0,21 cm².
Zvichibva pamitemo yekuwanda kwenhamba dzakakosha, dzakatenderedzwa kusvika 0,2 cm².
Mhinduro chaiyo ndiE.

7. Mhedzisiro yekuyera kureba nehupamhi hwenzvimbo ine rectangular ndeye 15,35 m uye 12,5 m. Nzvimbo yenyika maererano nemitemo yenhamba dzakakosha ndeye…..
A. 191,875 m²
B. 191,88 m²
C. 191,87 m²
D. 191,9 m²
E. 192 m²
Kukurukurirana
Zvakapihwa: Kureba = 15,35 metres uye upamhi = 12,5 metres
Mubvunzo: Nzvimbo zvichienderana nemitemo yenhamba dzakakosha?
Mhinduro:
Mutemo wekuwanda nenhamba dzakakosha: mhedzisiro yekuwanda inofanira kunge iine nhamba dzakawanda senhamba ine nhamba shoma yenhamba dzakakosha dzinoshandiswa mukuwanda.
15,35 ine nhamba ina dzakakosha uye 12,5 ine nhamba nhatu dzakakosha. Nhamba diki pane nhamba dzakakosha inhatu, saka chigadzirwa chinofanira kunge chine nhamba nhatu dzakakosha.
Mhinduro chaiyo ndiE.

8. Kureba kwechinhu kunoyerwa uchishandisa micrometer uye kuverenga kwacho kuri 15,08 mm. Manhamba akakosha nehuwandu hwemanhamba akakosha mukuyera, zvichiteerana, ....

1. 15,08 mm uye 3 nhamba dzakakosha
2. 1,508 mm uye 4 nhamba dzakakosha
3. 15,08 mm uye 4 nhamba dzakakosha
4. 1,508 mm uye 3 nhamba dzakakosha

Kukurukurirana
Nhamba inokosha = 15,08 millimita
Nhamba yenhamba dzakakosha = 4
Mhinduro chaiyo ndiC.

Kwakabva mubvunzo:

Mibvunzo yeNational Examination Physics yeChikoro Chesekondari/Chikoro Chepamusoro Chebasa

Mubvunzo 1:
Nyora nhamba 3020 muzvikamu zvitatu zvakakosha.

Kukurukurirana:
Nhamba yekupedzisira (0) haionekwi senhamba inokosha kana iri kurudyi isina poindi yedesimali. Saka, nhamba 3020 munhamba nhatu dzinobatsira i302.

Mubvunzo 2:
Chii chinonzi huwandu hwe23,45 ne1,234 kana zvikaverengwa nenhamba nhatu dzakakosha?

Kukurukurirana:
23,45 + 1,234 = 24,684
Nhamba dzakakosha dzakatenderedzwa kuita nhatu dzakaita se24,7.

Mubvunzo 3:
Nyora nhamba 0,00789 kune nhamba mbiri dzakakosha.

Kukurukurirana:
Nhamba iyi inova 0,0079.

Mubvunzo 4:
Ndeipi nhamba ine nhamba ina dzakakosha: 1010, 1001, kana 1000,1?

Kukurukurirana:
Nhamba 1000,1 chete ndiyo ine nhamba ina dzakakosha.

Mubvunzo 5:
Kusvika pa678,932 kusvika ku4 vakakosha.

Kukurukurirana:
Nhamba iyi inova 678,9.

Mubvunzo 6:
Chii chinoitika kana ukawanza 23 (nhamba mbiri dzakakosha) ne4,56 (nhamba nhatu dzakakosha)?

Kukurukurirana:
23 × 4,56 = zana
Mhedzisiro yacho inofanira kunge iine nhamba mbiri dzakakosha, saka inova zana.

Mubvunzo 7:
Nyora nhamba nhatu dzakakosha kubva pa0,002300.

Kukurukurirana:
Nhamba iyi inova 0,00230.

Mubvunzo 8:
Chii chinoguma nekukamura 44,0 (nhamba nhatu dzakakosha) ne11 (nhamba mbiri dzakakosha)?

Kukurukurirana:
44,0÷11 = 4,0
Mhedzisiro yacho inofanira kunge iine nhamba mbiri dzakakosha, saka inova zana.

Mubvunzo 9:
Kutenderera nhamba nhatu dzakakosha kubva pa12,3456.

Kukurukurirana:
Nhamba iyi inova 12,3.

Mubvunzo 10:
Nhamba ipi ine nhamba nhatu dzakakosha: 0,02300, 0,230, kana 0,00230?

Kukurukurirana:
Nhamba 0,02300 chete ndiyo ine nhamba nhatu dzakakosha.