Nrog kev ntsuas sib txawv hauv ntiaj teb, paub yuav hloov pauv chav nyob tuaj yeem pab koj li cas. Koj yuav tsum nkag siab yuav laij lej li cas yog tias koj tsis siv lub ntsuas ntsuas. Rau txhua qhov kev ntsuas koj siv, ib txwm ua tib zoo sau cov chav ntawm txhua qib kom khaws koj cov txiaj ntsig.
Kauj ruam
Txoj Kev 1 ntawm 3: Hloov Chaw
Kauj Ruam 1. Sib piv ob chav
Ob chav sib piv yuav tsum ntsuas tib yam. Piv txwv li, hauv nqe lus nug " hloov 2 nti rau centimeters", ob ntiv tes thiab centimeters ntsuas qhov ntev. Yog tias koj chav ntsuas ob yam sib txawv (xws li ntev thiab qhov hnyav), koj tsis tuaj yeem hloov ob chav.
- Coob leej neeg feem ntau tsis meej pem txog qhov ntev, thaj tsam, thiab ntim, tab sis lawv yog peb yam sib txawv. Nco ntsoov tias "square" lossis "2"txhais tau tias thaj tsam, thaum" cubic "lossis"3"txhais tau tias ntim.
- Koj tuaj yeem sau qhov piv txwv zoo li no: 2 in ib. =? cm.
Kauj Ruam 2. Txheeb xyuas qhov hloov pauv ntawm chav tsev
Ua ntej koj suav, koj yuav tsum paub qhov sib txawv ntawm cov chav uas twb muaj lawm thiab lwm qhov. Yog tias koj pom qhov kev hloov pauv uas muaj ntau qhov zauv zauv, hloov mus rau tus lej uas nyob ze tshaj plaws. Yog tias koj tsis paub tus lej twg yuav nyob puag ncig, suav tus lej thib ob lossis thib peb.
Piv txwv li, yog tias koj xav hloov 2 ntiv tes mus rau centimeters, koj yuav tsum paub qhov ntawd 1 nti = 2.54 centimeters.
Kauj Ruam 3. Sau qhov hloov dua siab tshiab ua ib feem me me
Sau qhov kev hloov pauv los ua ib feem, suav nrog cov koog. Muab cov chav pib rau hauv qab (tus faib) thiab chav uas koj xav tau nyob rau sab saum toj ntawm feem (tus lej).
Piv txwv li, sau 2, 54 cmj/1 in ib.. Koj tuaj yeem nyeem nws zoo li: "2.54 centimeters ib nti".
Kauj Ruam 4. Sau qhov teeb meem sib npaug nrog thawj tus lej thiab feem uas tau ua
Muab ob tus zauv no yuav muab lus teb rau koj. Txhawm rau ua qhov no, pib los ntawm kev sau cov teeb meem sib npaug nrog cov chav tom qab tus lej.
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2 in ib. x kev 2, 54 cmj/1 in ib. = ?
Kauj Ruam 5. Txhim kho qhov teeb meem sib npaug
Nws yog ib qho tseem ceeb kom koj suav. Txhua chav nyob hauv qhov teeb meem yuav tsum muaj nyob txhua lub sijhawm.
- 2 in ib. x kev 2, 54 cmj/1 in ib.
- = (2 hauv x 2.54 cm)/1 in ib.
- = (5.08 nyob rau hauv x cm.)/ nyob rau hauv
Kauj Ruam 6. Rho tawm cov koog uas tshwm rau saum thiab hauv qab ntawm cov feem
Yog tias muaj cov koog uas zoo ib yam rau saum thiab hauv qab ntawm cov feem, hla lawv tawm. Cov chav nyob ntxiv yuav tsum yog cov chav uas koj tab tom nrhiav.
- (5.08 nyob rau hauv x cm.)/nyob rau hauv
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= 5, 08 cmj.
Kauj Ruam 7. Kho qhov yuam kev yuam kev
Yog tias tsis muaj chav nyob raug tshem tawm, pib suav los ntawm kos thiab sim dua. Tej zaum koj tau sau cov feem tsis raug ntawm qhov pib suav.
Piv txwv li, yog tias koj yuav tsum muab 2 ntiv tes x (1 hauv. / 2.54 cm), koj cov lus teb yuav yog "in. X in. / Cm" uas tsis nkag siab. Yog tias koj thim cov feem uas twb muaj lawm, cov ntiv tes yuav raug tshem tawm. Yog li ntawd, pib dua nrog 2 nti x (2.54 cm / 1 in.)
Txoj Kev 2 ntawm 3: Hloov Tus Nqi Nrog Ntau Tus Nqi
Kauj Ruam 1. Sau qhov teeb meem uas koj xav daws
Nco ntsoov chav tsev koj xav pom thiab sau nws hauv qhov teeb meem lej. Piv txwv li:
- Yog tias lub tsheb kauj vab txav mus 10 mais toj ib teev, nws npog pes tsawg ko taw hauv ib feeb?
- Sau qhov teeb meem no zoo li "10 mais / teev =? Feet / minute" lossis " 10 mais/teev =? ko taw / min".
Kauj Ruam 2. Nrhiav qhov hloov pauv rau ib chav
Nco ntsoov, koj tsuas tuaj yeem hloov 2 chav nyob uas ntsuas qhov qub. Hauv qhov piv txwv no, muaj cov chav uas ntsuas qhov ntev (mais thiab ko taw) thiab cov ntsuas uas ntsuas sijhawm (teev thiab feeb). Pib nrog ib khub ntawm chav nyob thiab nrhiav kev hloov pauv ntawm ob chav nyob.
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Piv txwv li, 1 mais = 5,280 ko taw.
Kauj Ruam 3. Muab koj tus lej faib ua feem pauv
Raws li tau piav qhia hauv nqe lus saum toj no, koj tuaj yeem sau cov lus hloov pauv ua ib feem kom koj tuaj yeem tshem tawm cov khoom qub. Nco ntsoov suav nrog txhua chav hauv koj qhov kev suav.
- 10 miv / h) xwm 5280ft ua / mais
- = 52800m x os / h x miv
Kauj Ruam 4. Rho tawm tib chav nyob
Ib qho ntawm koj chav nyob yuav nyob rau sab saud thiab hauv qab ntawm qhov feem, yog li koj tuaj yeem hla tawm chav nyob. Koj tseem tsis tau ua tiav, tab sis koj nyob ze rau cov lus teb.
- 52800km x os / h x miv
- = 52800m ib / tsa
Kauj Ruam 5. Muab qhov teeb meem sib faib los ntawm kev hloov pauv ib feem
Xaiv lub tsev uas tsis tau hloov dua siab tshiab thiab sau qhov hloov pauv ua ib feem. Nco ntsoov teeb tsa daim foos, yog li koj tuaj yeem hla cov chav thaum sib npaug.
- Hauv qhov ua piv txwv no, koj tseem yuav tsum tau hloov cov teev mus rau feeb. 1 teev = 60 feeb.
- Tam sim no, koj muaj 52800 ko taw/teev. Txij li cov teev tseem nyob hauv qis dua, siv cov feem tshiab nrog rau teev saum toj no feem: 1 teev / 60 feeb.
- 52800m ib / tsa x kev 1 teev / 60 feeb
- = 880ft xh / teev x min
Kauj Ruam 6. Rho tawm tib chav nyob
Cov chav nyob ib yam yuav tsum hla hla, ib yam li tau ua dhau los.
- 880ft xh / teev x min
- = 880ft ua / min
Kauj Ruam 7. Rov ua cov kauj ruam saum toj no kom txog thaum tag nrho cov koog uas twb muaj lawm tau hloov dua siab tshiab
Yog tias cov lus teb tau dhau los nrog cov chav koj xav tau ces koj tau ua tiav nrog kev suav. Yog tias tsis yog, sim hloov mus rau chav sib txawv uas siv tib txoj hauv kev.
- Yog tias koj paub txog txoj hauv kev no, koj tuaj yeem sau tag nrho kev hloov pauv ntawm ib kab. Piv txwv li, koj tuaj yeem daws cov teeb meem zoo li no:
- 10 miv/tsa x kev 5280ft ua/mais x kev 1 teev/60 feeb
- =10 miv/tsa x kev 5280ft ua/mais x kev 1 teev/60 feeb
- Luas = 10 x 5280 ft 1/60 feeb
- = 880 ft/min.
Txoj Kev 3 ntawm 3: Hloov pauv nrog Metric System
Kauj Ruam 1. Ua kom paub cov txheej txheem ntsuas
Metric system, tseem hu ua decimal system, yog cov txheej txheem tsim los hloov pauv tau yooj yim. Txhawm rau hloov ib chav ntsuas mus rau lwm qhov, koj tsuas yog siv tus lej tag nrho, xws li 10, 100, 1000, thiab lwm yam.
Kauj Ruam 2. Txheeb xyuas lub tsev ua ntej
Metric units ntawm kev ntsuas siv tus lej ua ntej los qhia qhov loj ntawm qhov ntsuas tam sim no. Txawm hais tias cov piv txwv muab rau hauv cov chav ntawm qhov hnyav, txhua chav ntsuas ntsuas siv tib lub npe ua ntej. Hauv qhov ua piv txwv, cov ntawv ua ntej yuav yog kab lus, tab sis koj tuaj yeem siv kev hloov pauv nrog cov nquag siv ua ntej, uas tau luam tawm tuab.
- hli grams = 1000 grams
- hectograms = 100 grams
- deca gram = 10 gram
- grams = 1 gram
- deci gram = 0.1 gram (ib feem kaum)
- ntiv tes gram = 0.01 gram (ib rau ib puas)
- hli gram = 0.001 gram (ib rau ib txhiab)
Kauj Ruam 3. Siv cov ntawv ua ntej hauv kev hloov pauv
Yog tias koj paub chav ua ntej siv, koj tsis tas yuav saib los ntawm cov npe ua ntej txhua lub sijhawm koj hloov chav nyob. Chav tsev ua ntej saum toj no tau qhia tus nqi hloov pauv. Piv txwv li:
- Hloov ua lwm yam kilometers rau meters: kilo txhais tau tias 1000 ces 1 kilometer = 1000 meters.
- Txhawm rau hloov grams rau milligrams: milli txhais tau tias 0.001 ces 1 milligram = 0.001 gram.
Kauj Ruam 4. Tsiv tus lej zauv zauv es tsis txhob ua tus lej
Siv cov ntsuas sib hloov, koj tuaj yeem hla txhua qhov kev suav suav raws li saum toj no. Muab tus nab npawb los sib npaug 10 yog tib yam li txav tus lej zauv mus rau sab laug. Nov yog qhov piv txwv ntawm kev siv qhov no:
- Teeb meem: hloov 65.24 kilograms rau hauv grams.
- 1 kilogram = 1000 grams. Suav cov zeros, muaj peb. Yog li, koj yuav tsum sib npaug 10 peb zaug lossis koj tuaj yeem txav tus lej zauv mus rau sab xis peb zaug.
- 65.24 x 10 = 652.4 (sib npaug ib zaug)
- 652.4 x 10 = 6524 (ob zaug)
- 6524 x 10 = 65240 (peb zaug)
- Cov lus teb yog 65240g ua.
Kauj Ruam 5. Xyaum nrog cov lus nug nyuaj dua
Koj yuav pom nws nyuaj dua thaum koj hloov cov chav ua ntej mus rau lwm chav ua ntej. Txoj hauv kev yooj yim tshaj plaws los daws qhov teeb meem no yog hloov lub hauv paus (tsis muaj cov ntawv ua ntej) ua ntej, tom qab ntawd hloov lawv mus rau hauv cov chav uas xav tau. Piv txwv li:
- Teeb meem: hloov 793 milliliters mus decalliters.
- Yog tias muaj peb tus zeros ces txav tus lej zauv mus rau sab laug peb zaug. (Nco ntsoov, txav lub dot mus rau sab laug thaum faib.)
- 793 hli = 0.793 l
- 10 litres = 1 decaliter ces 1 liter = 0.1 decaliter Muaj ib qho xoom yog li txav tus lej zauv mus rau sab laug ib zaug.
- 0.793 TZS = 0.0793 hli.
Kauj Ruam 6. Txheeb xyuas koj cov lus teb
Qhov ua yuam kev uas feem ntau tau ua yog sib npaug thiab faib, lossis rov ua dua. Thaum koj tau txais koj cov lus teb kawg, txheeb xyuas qhov tshwm sim ntawm lo lus teb:
- Yog tias koj hloov mus rau chav loj dua, koj tus lej yuav tsum me dua (zoo ib yam li thaum hloov 12 ntiv tes mus rau 1 ko taw).
- Yog tias koj hloov mus rau chav me dua, koj tus lej yuav tsum loj dua (zoo ib yam li thaum hloov 1 ko taw rau 12 ntiv tes).
- Yog tias cov txiaj ntsig tsis phim cov lus teb no, txheeb xyuas koj cov haujlwm.
