「 1085年度單
劇中学入
算術科
(八)百分法
寅三第張大熊
日五廿月正年巳乙展重
(十二)
會憲方。
WAH KIU YAT PO
五期星
F回核
校准。
台灣恩、凄筱芳、瑞芳、黄躪園、、馮胤民、何福粱、 做馬生,除因啊 莫米、莫真 、 膠、坡 、小品、發英君紀念品留念。 橫,並邀各界名流油、食家、琳、陳黑龙、望月,特大四 【親自主持。落日灣、阿妙、斯、徐芳、王、王張大偉、破智明、朱社區服務中心,舉辦之兒發百令會殖感 有爲我校第十一屆(監愛寧、盧鍋假、勞汝樂、愛跺嬡、汪桂 鹹溪、來洪生、徐裡面將使現有之自然,要常呜科書籍內容, 二、麥報荃、漠府卷、按順祥、 王帳、阿伯方、阿財、標本致具展監會。當天燕,由該會主席 邀,作兩天自然科專題演講,咁
醜何徊
英氏在英臬書院演講形。
一衆盛况,茲將本來
日、陳珠、陳維、 陳衍菜、鹹鹹、┏
姬、陳珍、紫梅
陳、陳美娜、雙宋、叫 寶珠、陳炫鈴、陳淑
倍、陳梁娟、陳有攒
|陳淮年、陳多路、陳
隈
一、月華、黨雅男、
-翔、張勁冰、蹲
張美娟、張安婷、
| 周英、陳君、第
| 若水、濁玉英、朱 【英美甜、平、
鍾玉貞、傅淑香、 一、宋然、龔述
田秀英、蔡、
【周紹雄、周榮、
[花莉賞 • 程、
林燕米、徐洛、許律
·傑傕、何姆英、
、高玉兒、顯謝君。
郎惠芬、紙、
(十二)
預習専爛
-王錦釗、
此類問題,在會考試題中,每佔英地位;于1962年佔12題,63年郵佔16題,64年度佔13期 ,可見命題者對百分數如何震源。
在分數中,以100 做分母的,此等方法,叫做『百分法」。用百分數來表示一件東西的分量 *或用一個數精確標準,以計試別一個數量相當於通數量的百分之受,滙計算法,就是「百分法
I
100
*百分數的單位,通常用頭來代表,按作首分之幾,例如45%應作百分之四十五,百
分數,小數及分數,均可互化,茲分如下:
1. 百分數與小數的互化法
「方法」:A、百分數化小數
B.小數化為百分數
l
(B) 127–2613/NK (1964)
2
127-96-127.59% 1.275
(例三) 2.351的百分之幾(1964)
鮪
2
把fi分數去掉再將小數點左移能岗位,便形• 先將小數黜向右移後岗位,然後加上%德等。
【例二)5是8的百分之(1964)
5
8
58 0.625-62.596
-
(四)化5%為小數(1963)
4
2.35
235
2.35 199
- 235 96
5-96-5.2596-0.0525
}
100
2.
百分數與分數的五化法
一九六五年度
化學科
CHEMISTR
(a) Coal is heated'in ̄`a`retort ́in 'the'absenceˇox"als.
The vapours from the retort are first bubbled through water te
The impure gas a sydralic asin, where some coal tar condemes out. in then passed the cooler, where (a) more tar settles out, and (b)- water vapour condensen dissolving some.the ammonia which collects a annonśaqal liquor.
The gas is then passed into the deterrer,” where the final trace. ox car are removed, and mubsequently into an ammonia washer, where
The hydrogen sulphide (about the rest of the ammonia is removed.
1% by volume) is then removed in purifiers, where the zas-is.com....... verted into ferrio¡sulphide:
Solution 1
A mixture of
volatile products are given off including coal gas, coal'tar,
The hard., porsus substance 'moniacal liquor and hydrogen sulphide.
left in the retort i coke,
西细心
its
「方法」A,百分數化為分數——可照百分數讀法將成分數,或將96改篇 然後約間-
1
100
B.分數化爲百分數先將分數化為小數,再將小數點向右移後兩位,加上6
(-) 1E87-96 (1964)
便是。
7
(例二)化一百分數(1963)
20
?
$-0.35 - 3596
2
1
87.5
7
87-6-87.59%
2
100
#
20
〔例四)化16.5%爲最罚分數
16.5 165
33
# 16.59%-
100 1000
200
(例三)化7596爲教丽分數(1952)
75
3
解:75%-
100
4
__
1方尺25方寸
(例五)张
您百分數(1961)
6万尺25方寸
解 1 为尺25方寸-125方寸, 6万尺25方寸-625方寸
13尺25方寸
6万尺25方寸
125
}
-0.2-20%
625
5
3. 簡單百分法
(例)16×9方时2方呎的百分之幾?(1964)
解 16x9方时~144方时,
2方呎-288方时
144
故 16×9方吋>2方呎的
5096
品
288
2
1
(例二)由10幣去一,可減多少次?(1960)
3
1
1是一的3倍,
3
I
3
故可鰲10+一
10x- 30(火)
3
1
(例三)方交的63%是多少?(1963)
1 方-300方尺
码
故1方丈的63% 100方尺就
63方尺
(四)
-100
一起的15%形多少?(1963)-
-- 100 FX----
50斤
.2
2
1
故一报的15% -50斤×
15
100
7.5 7
常用的小數、分數、百分數瓦化機
0.5
0.33
0.25
0.2
0.142
0.125
0.11
0.1
0.16
1
分數
2
3
4
5
8
10
百分數 50% 133–96 25%
2096
12-96 11-96 1096
3
2
練習十
(1)化下列各百分数篇小數
B. 0.1436
D.10.5%
3
A. 26
C. 61.5%
(2)化下列嘅小數爲百分數
A.0.07
(3) 化下列各分數為百分數
D. 0.625
I
C. 1.225
3-
4
3
c.
40
B. 0.45
1
B.
5
9
D.
25
B. 3.8%
1
D. 33-96
3
1
(4)化下列各數為最簡分數
A. 0.3696
C. 72-96
(5)在0.65,
127
200
164%,以那一個數滾小?
(6) 茶败的3~5%是21.5,求其數。
(7) 20减去一,可多少?
(9)
3
(8) 3 贿10先令的30%長多少?
- › ZKA 1— • BAPKAZZMFA??
3
(10)某入有一盒吃去一,餘下來的是全盘的百分之幾?
4
器
11
5
附練習十一答案
11
7
(1) 兩針饿急時應在:8時40分48時43一分
12
IL 11
4
(2) 霑針成直時基:9時(45分30分)+一 19時15分
12
2
11
9
(3) 第一次陷在:5時屮(25分−5分)+ 12
-
5路21一分
11
8
第二次是在:5時十(25分+5分)十一$32一分
12
11
11.
9
(4) #-ZZKAKE: 7R+(354—15✯)+; 12
-721-9
11
6
BARCAÆ: 7#+ (85✯+159) +-
12
7時54一分
11
108
11
1
(5) 兩針成 108 度角時在:6時(50分-60分¥ 360
12
6時13一分
11
(6) 兩次相宜長針多起一間,即多走60分
11
12
11
5 ̇故要經過:60分 1降5 分
(7) 所箱時刻路16路 (12分)59分
· (8) #MOMI1 (8×1-)+(64×1−)-19-9
忠
fluores
FOT
terrio. oxide
$8,0
ferrio sulphide
There is still some'benzole," a mixture of’hydrocarbons.In the 'gus had this is removed in the benzole scrubber,
The purified gas is then ready for use and is stored in the familiar gas-holders which you see at all gan-vorka,
(b) Water gas is a mixture of equal volumes of hydrogen and carbon monoxide, The production of water-gna at the gas-works and addition to coal-gas enables a large quantity of fuel gas to be made from a given amount of coal.
(c) when coal gas is burnt in air, ita flame is emoky and fumaāons. When a bunsen burner is used with the air holes open, air enters the
This mixture tube and mixed with the coal gas before it burns. enables the gas to burn more quickly and completely, giving a small-
With the air-hole fully open, a temperature ir and a hotter flame.
a noneluminous Moreover, the flame in
of 1,800°C can be reached. ine, and will not blacken porcelain or glase.
(d) The products of the complete combustion of coal gas are water
apour, carbon dioxide and nitrogen (originally present in the coal gas).
Solution 2
{a}{1} The composition of deixture is variable out the composition
of compound is fired and Invariable
Thus in mixture of iron filings and sulphur, we can mix Lie to together in any proportion, and we still get a mixture of icon filings and sulphut; for example e cap obtain a mixture of iron and sulphur by miring go of sulphur with 50 of iron, or 50 gs. of sulphur with 5 gm. of iron
In the case of ferrous sulphide, however, the proportions
The proportions in which are fixed and cannot be varie d. iron and sulphur combine are 56 ga. iron to 12 gm. sul phür.
oomDinenta
of a
ii) The components of a mixture can be separated by differem og
in their physical properties, but the compound cannot be separated in this way.
Aron filinge and When we dip a bar magnet into a mixture of sulphur, the iron filings are attracted by the bar magnet which the sulphur is not; we are thus able to separate
When we dip the iron filings from the mixture in this way.
a bar magnet through powdered ferrous sulphide, the iron, which is chemically combined with sulphur, is not attracted
the iron from by the magnet; we are unable to spearate the sulphur by physical.means.
When carbon disulphide is stirred with the mixture in a beaker, the sulphur vill dissolve in the liquid and the solution so obtained is spe arated from the insoluble iron by filtrasion. The sulphur is recovered from the solution by evaporating the thckan sdiäulphide slowly in a fuze cup- board, then carop disulphide is stirred with ferrous sulphide the sulphur in the compound does not dissolve (iiil Inmixture the components keep their own physical and
a substance with.. chemical properties, but a compound is entirely new physical and chemical properties.
the *average- The colour of the mixture may be regarded as
The particles of iron of iron (grey) and eulphur (yeliov). and sulphur may be distinguished even in the most intimate Ferrous sulphide, however, in mixture under a microscope. black, and does not resemble either the iron or sulphur. When dilute hydrochloric acid is added to the mixture,
Iron displaces hydrogen from dulate hydrogen is evolved. hydrochloric acid, but sulphur dess not react with the acid. When dilute, hydrochloric acid is added to ferrous sulphide, however, bydrogen sulphide, a gas having a smell of rotten eggs, is given off.
(5) (1) Experiment to show that gazes diffuse- Hydrogen is very much lighter than oxygen. When we 'invert a gas jar of hydrogen aver * ga je of oxygen, "and remove the covers, we would normally expect the lighter-bydrom gen to repain in the bottom gas jar.r after a few minutes, we bring a lighted taper near the month of the lower gas jar. there will be a slight explosion. This can only happen if some hydrogen is mixed with the oxygen, for oxygen itself will hot burn. Similarly, if we bring a lighted taper near the mouth of the other gas jar, we will again observe that the gas explodes. Now the hydrogen must have oxygen mixed with
it, otherwise, the hydrogen' would burn quietly with a pale, blue flame. The two gases bave each tried to occupy the entire volume of the two gas jara, and in ao doing, they have mixed together. The two gasca are said to diffuse. (ii) Experiment to show that the rate of dissusion depends on
The rate of diffusion of a gas is given the density of the gas. by Granhasa. Law which-states that the rate of diffusion of a gas in inversely proportional to the square root of its density." This is easily illustrated as follows:-
Kats
商台 升中指導英文科第廿一課
播日-第二台二月廿六日下午五時至六時 出期`第一台三月二日上午八時半至九時
Lend this careNIÂY.
日六廿月二年五六九一間公年四十五國民歌中
葛師財本年度畢業授凋典禮
定三月四日舉行
經
已
® 是局
屆
議
名單經已决定 憑.. 是屆領受文憑者共二百九十九人 立法局議員胡百全律師致詞 胡夫人授
英繼布在英皇書院 講述生物標本製作
【香港、南唐楼、李漸聚、漆器、
【北中,林有鴻,劉鴻一銘、李秀娜、李奕 一欏魚炎、羅坤玉、泡開錦、梁鴻寨、梁
月於三月四日下午六時 黐昆王、翻妙慣、劄 冼碓冰、冼淑芳、薛·葉健儀、楊月堅、 六,俯立法猗额員胡百金琴、謚文衡、雄鳳中優、蘇遜娟、誠點膣龍、陳焯明、陳類、菇离異蠣、花英君對標本製作無採氣聚有 骨,在校融堂舉行,感雞、劉玉梅、樂殴、妙玲、張飛、玉、我、津、乾、骨骼等, 二五年聶桑授鼎禮,定、林郡慈、林舜玲、、邵挺玉、岑淑薇、、楊宜芳、林國食、紅,聽來之多,全党滿座。其根附示寂之 年,杰颼惠科以校一九六麥、蒙惠英、酿渙有 玲、倪恩彬、潘鴻恩 店、楊柳莎、楊三酒 製作」。當天由該機校長向學中特器介 中館悅愛、唐麗珍、湯大偉、陳新、陳惠 、李醋安、李慶蕙、、鄧疝梅、郵琇榮、陳體、壓、顯得,就石湖公立校內,其製存者,亦
寧操布氏,於廿四日英樂書院會邀 石造愛好為獸協會顧問,及遠良醫院教授 〔特簿〕苻湖公立學校自然科敎師,
日【中師致詞:胡夫大授
,琳瑯滿目,其中不少
·奥啓路、蘇州、高梁、等离村、街、吳宏銘、吳文精、易憫基、撷自興、阿王、秦炳强、易抗機高海平、吳安、象為加強學術研究,定為易羅奧醫學之及要 匡、李振榮、總離亮縣九生、無袖敏、底川、侯世康,莫家和、楊祖糖、梅露酒、「維彬、我淑賢、塗畫、郭炳經、林麟煊、支會立九龍中醫院,醫學院,還師訓班入學申請
城招商
倍男請書必須真有 學分行通知。
畫份戰學時間麥,
吳彼得、嫦、舒興邦、文、實夫、陳艾、同阿珍、
岑秕 、張 行、暖暖、趙究芬 張淑寮、甘席英、莎 智煜、徐啟康。
本
今爲最後一天 属類目吃八時至十,据自乃祖宗的,
時,在新旗地一五雪用
【槛、
治療、劉駒、李無漆容、陳幼、張慧玲 深、徐翊琪 你濕、嘿爱材、那照 蔡衍良、許深坐、林變、司徒瑞華、陳星九龍中醫學院
九號二樓該會內,畢,故治疾病,僅有不
預料投考者仍頸
行醫學講座,懸案: 可思議之效能,體會
韶生、黃偉榮、郭伯金城、阮品喱、馮友翠、劉飛貞、盧墨 冼紹麟、否狴麟、王玉尙線、雷樹茶、莱·周燕、徐玲、郭 -烱家撼,笛锦文、、樂郁營、交兆偉、、張貌鴻,苦珍妮、 定期醫學照座「數證易經與醫學之無酗院聯對通告會員
阮
城、胡洪梁、燕龍、李淼兒、位器、白 莊、鈴佩護、楊威達 師公會學術部及1氏篇本港之名中醫:1。(港)
电330 21
d******
日期入各
下,學區手
Coaprehendion
Aunt Lucy, with Jim and Anne, met æra. Pong and her con the sintian, a ses ahout the 60 are an his cousin Prod
Jia's father, whom they did not
AHA XONG, WAD' two years younger.
ve often, was the captain of a ship, sailing between
and vor very rarely at hoas
il va unik?" Aunt Lacy asked, "It's not far, but -
Les! walk? Hre. Fong said, "It's sech a lovely
Ta boya ghd Anne went on aboad, leaving the older pecate
to vale lowly by themselved.
"What'n the new house look like?" Rec. Fong naked. "it's just wonderfi pulled Aunt cy. It has a WIJOBI Eitcher with plenty of cupboards, who likes the pan. I sheir ak-300 iv ve sivics about provenants of the house, Let's Larry to nee it.
Fill in the blanke with a cuitable word. Put all your andverS on the right-hand side of the page,
there were(1) people mentioned above.
b. The and Pred were (2)
the youngest of the three children
c. tozather (4) persons in Aust
4.
ex
• Buat Yuey(5) was the captain of a ship
going to sea the new 16)
1. très that the house had a (7) kitchens..
Can Loey
Mucy and Hre. Pong were(ēj
A. 10) bonne geldoo
o wat ide to care good sution
found thio carefully.
In the early days of flying, a ranous dites ante round aiakelf
à nos com anywhere, and in urrounded by thick fog. He could i
there va a control tover to guide him to an alle
thope youred and ho could as that he was over a tova.
Then the fake
Just so the augine of the plans had ran out of patrol. The pilot stered in mashine tumards the open country and then jumped out. But the danger was not over. As his parachute can do, he noticed
VAR that the plane var flying round in creio. If it touched him, he would killed. Luckily, the plane at lunt crashed in zild and the airman landed asfely on the road,
Compite these sentencesi-
1. In the early days of flying, there van noua.to show the
Placita way.
2. Another word for airman is
3. 11 places, stop in the...........................
-4. The Alcan jumped out of the piane dacayne the picke had
5: Top down to the ground sheer
2-
He was 14, danger because the plane, flew round wa
above hia.
黑白高 daigerouw to dtive ro......................
Cosplete each of theme with the carrot known. 20ck?
This icon is faqat he is (olever,
3. He could see the way when the fog was idlesppear, above,cleared)
>. to drive an aeroplane is to (whol, ateor, run) is.
4. To inatime, realias, attend)thing in to ces 1.
To guide is to (teak, carry, diront).
6. The pilot in the story, is (brave, fortunato, cala).
J. Read the following. (1960)
Jack lived on a Tara ten alles from a big city. He would
waph de fissen, and already he was very vastul on the fern. One
cold winter-day, Jack's father caid, "I have come important work to do tomorro. I want you to go to the city for so. Start, early, then you will be back before 17 in conlly dark
12
* Jack vas very pleased. He loved to ride his horse and h
have lunch with his friend.
What Next morning he started arky. In yao a long ride. hrashed the ofty he had to take long time easing some merchanta and going to the market, i wne five o'clock before he could start back and it was already beginning to gab dark.
Sut Jack van happy. Ke Aked to as the lights in the houses. and he thought of all he would tell, Al father, BIG 1000 thera yar nd are houers. The road was dark and Lonely. Jaz gabored the dark wood he nuat ride through, that he was a bravo bogʻand sold to bibelf, "y horse can run fant, I need not that,"
They reached the 214410 of Ahe wood, safely. Dodávaly a voÁDH maid, "Én, (* Three men jumped at Jack. They pulles him from his harse a kicked and fought, but he could not get away. El&*MER* wars tied behind him and bis jego were tied tightly together, and he was throw daha the wood. The thieves then vont exay taking bis hard.
Anawar these questime. Vse KOT more than thred wordu tar anch
VRI
How did Jack go to the alty?
Hase pinca he went to the city
How far has Jaok to ride kawai
5. Where did the thieves hide?
6. What did t. thieves steal from Jack?
7. How did the thieves shop Jack from walking
0. Did the thievon tie Jack's hands at háa
Bidaa? at bio.
Iar in froot?
bagerly that evening? 10, ha sights belped Jack on his way, baukt
Kists
B
Fu
9. Why was
CARR PERIL
• FALLS
WATHO
Is the first cane,” hydrogen (a gas much lighter than air) diffuses into the porans pot much faster than air diffuses out。 The pressure of the gases in the porous pot is in- creases causing the level of the coloured water to be de- pressed in A, and raised in the open tube B.
If carbon dioxide (a.gas much heavier than sir) is used instead of hydrogen, the level in A is raised, and that in
This means that carbon dioxide diffdass inte Bis lowered. the porona-pot more slowly than air diffuses out.
yuestions zongh。一、
1.. Describe, with the aid of a labelled diagram,?how you'would
obtain a sample of dry atmospheric nitrogen. What impurities would you still sprect to be present?
State obly, giving also, the equation..now pare, nitrogen can be. obtained from. (a) armenia,
(b) nitrous oxide,
4.88"ge of "bazzum enim adsɣory@sain (BaCl,.24,0) vera'diseOLYSA in water. To the solution vas added 100 mf. of a normal solu- bion of sodium carbonate, and the vrecipitate, formed filtered, carefully wits a and dried. Calculate
-weight, offgolidy obtained,Tam iple the volume of
hydrochloric acid/which would. be required, to react with{excéss«of,modium barbonate ĉinathe filtrated
4. Road carefullyr
The Lighte
The day ended with ruing and clouds covered the H123# Tiks blanket. The boya were tired after these long walk ovar NATOY mountain patan.
had been put all day and haped, to gas bank to the village before cars. DuB Boone had and mistake, 19 kad gattling Sark and still no hamasa sould be
The boys turned up their wont collage and walked on, and at a time, Blok led the others biak kept turning round Tom, nhà xeo the mallu, laund NA
I had to walic em, ŻAK to to pra he van cerug.
Luddenly Tie fell down and cried out that he could go no further, her had just reached the road, Bo plak put his betulen Jacz and Coerge, who each
And now it was dark.. for an hour they walked an, wet, tirid and angry, unable to see in front of them, they did not
pek a ord till they saw the welcome Lights of the villag
Anover these questions,
1. Show the slowest walker?
LEAR
2. kho walked Tirat?.----------NAKA
3. Underline the NIGHT ANDYER
(3) they wanted to be late (1) they saikez one by one.
Why were the boys go latej nok.
411) path was Longiợ than they thought,
7-1 the pountain path, van paseada
[(v) they could mak se to
(91) Hosana muje a mistake.
4 the dreads cover
that the clouds vèrs i
hills like a blanketim qafa neina (aight/thin/thick/white/black)
5. The box could not sve i front of thers becaus
(1) they were wet_ (21) the path veo narrON [115] they were tiraa (iv) the village was far BHRY (v) 35 van dark
5. Then Kortatue woke up in the morning ant thought-of- Braktam, Hadgaṣog w
1 Max umally dealing sleepy and thinkin of beả, že opens the night in busting for vorne, and analla and enjoying the cool daw in the gardeny Bul Mortiem, and he always had a chat before the ans alerted wxbing and the other fall asleep
hereyor te Hedgehok?", asked Tortsins.groomly, and
mering. He dente da tod under the heap of her the hedgade 1 aan't fancy by broakfast Shi, XV
hasn't been to say, "Oupa morning! to ***
had a favorđa with the ola dell
In such bracke underline the võre that gives the 1997 anayegi (a) sartotus van say (ayoisna/thiTwby/and/EY/
Hedgehog always wanted to go to (23N1 chatting/playing/und).
(e) Tortoise and Hadashog always had a (guarinÍLIQK/RTENORD/
fun/thinking/ Tamillar talk)
<4) deornings Badgehog weak (to bed/?anking/playing/W995/
dal Then Tortoise could not fina Zedgehog, ko 100 TEZI
Cheng, and, tired/ante/glas),
作
請於止
白斑
蒸牛肉,在訊 預
申將必 篇品
請申细解本
之任郤
保藏兩久
腐學份
4,淡鉈的試以
同長連钱 原健
除或同必地作
,按本須點部
及試此仍
地及
格羅
*爲此 弱續 在蒼加僩
雜,開私雞
耕得則備爲校
比檢機可旣但剩然計 之仍涂質可在生機爲况一 甘有加有在入活,一凡准 接學延一伙甲尙用 满前受多問受的游粄 可爱
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