Izinkinga nezixazululo mayelana nokuguqulwa kwamayunithi - izinkinga nezixazululo
1. Uhhafu welitha lobisi olusha oluxutshwe nesosi ye-pudding, khona-ke lingakanani inani lobisi okufanele lifakwe kusosi ye-pudding…
A. 5000 ml
B. 500 cc
C. 50 dm 3
D. 5 m 3
Kwaziwa:
Umthamo wobisi = amalitha angu-0.5
Okufunwayo : 0.5 ilitha = ….. ml = ….. cm 3 (cc) = ….. dm 3 = ….. m 3
Isixazululo:
Ilitha eli-1 = amamililitha ayi-1000 (1000 ml)
Ilitha eli-1 = 0.001 m 3 = 1 dm 3 = 1000 cm 3 (1000 cc)
0.5 ilitha = (0.5)(1000 ml) = 500 ml
0.5 dm 3 = (0.5)(1000 cc) = 500 cc
0.5 ilitha = 0.5 dm 3 = 0.0005 m 3
Impendulo efanele ngu-B.
2. Uma kufakwe ubisi oluwuketshezi oluyi-100 milliliters, khona-ke zingaki izingxube ezikhiqizwayo.
A. 12.5 dm3
B. 1.25 dm 3
C. 3.5 dm 3
D. 0.35 dm 3
Kwaziwa:
Umthamo wobisi = 100 ml
Umthamo wamanzi = 250 cc = 250 cm 3
Okufunwayo : 100 ml + 250 cc = ….. dm 3
Isixazululo:
ml = mililitha
cc = cm 3 = isentimitha eliyi-cubic
i-dm 3 = imitha ye-cubic deci
1 dm 3 = 1 ilitha = 1000 milliliters ukuze amamililitha ayi-100 = 100/1000 litre = 1/10 litre = 0.1 litre = 0.1 dm 3
1 dm 3 = 1000 cm 3 ukuze 250 cm 3 = 250/1000 dm 3 = 1/4 dm 3 = 0.25 dm 3
100 ml + 250 cm 3 = 0.1 dm 3 + 0.25 dm 3 = 0.35 dm 3
Impendulo efanele ngu-D.
3. Igumbi lokufundela elinobude obuyi-10 m kanye nobubanzi balo obuyi-8 m, kusetshenziswa i-ceramic njengephansi lalo . Usayizi we-ceramic ungama-20 cm x 20 cm. Inani le-ceramics phansi ekamelweni lingu….
A. 20
B. 200
C. 2000
D. 20000
Kwaziwa:
Usayizi wegumbi:
Ubude = amamitha ayi-10
Ububanzi = amamitha angu-8
Indawo yegumbi = 10 mx 8 m = 80 m2
Usayizi we-ceramic:
Ubude = 20 cm
Ububanzi = 20 cm
Indawo ye-ceramic = 20 cm x 20 cm = 400 cm 2
Okufunwayo: Inani lezinto zobumba ezisetshenziswa phansi
Isixazululo:
1 m = 100 cm
1 m 2 = 10,000 cm 2
Ngakho-ke 80 m 2 = 80 x 10,000 cm 2 = 800,000 cm 2
Inani lezinto zobumba = indawo yegumbi / indawo yento yobumba
Inani lezinto zobumba = 800,000 cm 2 / 400 cm 2
Inani lezinto zobumba = 2000
Impendulo efanele ithi C.
4. Njalo ngomzuzwana amanzi afinyelela ku-4 cc aconsa esitsheni esingamalitha ama-5 . Isitsha sigcwala ngokugcwele phakathi nemizuzwana …..
A. imizuzwana eyi-125
B. imizuzwana engama-200
C. imizuzwana emi-1250
D. imizuzwana emi-2000
Kwaziwa:
Ilitha eli-1 = 1 dm 3 = 1000 cm 3
Umthamo wamanzi = 4 cc = 4 cm 3
Umthamo wesitsha = amalitha ama-5 = 5 dm 3 = 5 x 1000 cm 3 = 5000 cm 3
Okufunwayo: Isikhathi esiphakathi isitsha sigcwele amanzi
Isixazululo:
5000 cm 3 / 4 cm 3 = 1250 imizuzwana
Impendulo efanele ithi C.
5. Umama uthenge amanzi okuphuza amalitha angu-2 (igaloni eli-1 = amalitha angu-19) ngentengo engu- $2 . Uma umthamo wenkomishi yamanzi ungama- 200 ml, khona-ke nquma intengo yenkomishi yamanzi.
Kwaziwa:
Igaloni eli-1 = amalitha ayi-19
Amalitha angu-2 = amalitha angu-2 x angu-19 = amalitha angu-38
Ilitha eli-1 = amamililitha ayi-1000
Amalitha angu-38 = 38 x 1000 milliliters = 38,000 milliliters
Ingilazi eyodwa yamanzi = amamililitha angu-200
Kufunwa: Intengo yenkomishi yamanzi
Isixazululo:
Amalitha amabili amanzi = amalitha angu-38 = amamililitha angu-38,000
Inkomishi eyodwa yamanzi = amamililitha angu-200
38,000 ml / 200 ml = 190
Kumalitha amabili amanzi kukhona izinkomishi zamanzi eziyi-190.
Intengo yamanzi amalitha amabili = $2
Intengo yenkomishi eyodwa yamanzi = $2 / 190 = $0.01
1. Inkinga: Guqula amakhilomitha angu-50 abe amamayela. (Imayela eli-1 ≈ 1.60934 km)
Isixazululo: 50 km × (1 imayela/1.60934 km) = 31.07 amamayela.
2. Inkinga: Unama-litre amabili amanzi. Mangaki ama-milliliters lawo? (ilitha eli-1 = ama-milliliters ayi-1,000)
Isixazululo: amalitha ama-2 × 1,000 ml/ilitha = 2,000 ml.
3. Inkinga: Ingane inesisindo esingamakhilogremu angu-8 nama-ounces angu-5. Guqula lokhu kube amagremu. (Iphawundi eli-1 = amagremu angu-453.59237 kanye ne-ounce eli-1 = amagremu angu-28.3495)
Isixazululo: amakhilogremu angu-8 × 453.59237 g/iphawundi + ama-ounces angu-5 × 28.3495 g/i-ounce = amagremu angu-3,628.73896 + amagremu angu-141.7475 = amagremu angu-3,770.48646.
4. Inkinga: Ithangi liphatha amalitha ayi-100 amanzi. Guqula lokhu kube amalitha. (Ilitha eli-1 ≈ amalitha angu-3.78541)
Isixazululo: amalitha ayi-100 × amalitha angu-3.78541/galoni = amalitha angu-378.541.
5. Inkinga: Guqula amasentimitha angu-250 abe amamitha. (amasentimitha angu-100 = imitha eli-1)
Isixazululo: 250 cm ÷ 100 cm/imitha = 2.5 amamitha.
6. Inkinga: Imoto ihamba ngesivinini samamayela angu-55 ngehora. Guqula lesi sivinini sibe yizinyawo ngomzuzwana. (Imayela eli-1 = amamitha angu-5,280 kanye nehora eli-1 = imizuzwana engu-3,600)
Isixazululo: amamayela angu-55 × 5,280 amamitha/imayela ÷ imizuzwana engu-3,600 = 81.78 amamitha/isekhondi.
7. Inkinga: Iresiphi idinga amagremu angu-200 kashukela. Guqula lokhu kube amagremu. (1 ounce ≈ 28.3495 amagremu)
Isixazululo: 200 amagremu × (1 ounce/28.3495 amagremu) = 7.055 amagremu.
8. Inkinga: Igumbi linendawo engamafidi-skwele angu-300. Guqula lokhu kube ngamamitha-skwele. (1 square foot ≈ 0.092903 square metres)
Isixazululo: 300 square feet × 0.092903 square metres/square foot = 27.8709 square metres.
9. Inkinga: Unentambo engamasentimitha angu-150 ubude. Guqula lokhu kube amayadi. (Iyadi eli-1 = amayintshi angu-36)
Isixazululo: 150 amayintshi ÷ 36 amayintshi/igceke = 4.1667 amayadi.
10. Inkinga: Ibhodlela liqukethe amamililitha angu-500 kawoyela. Guqula lokhu kube amalitha. (Ilitha eli-1 ≈ 946.353 milliliters)
Isixazululo: amamililitha angu-500 × (1 quart/946.353 milliliters) = amalitha angu-0.5283.
