14 AUG 1970
CITY HALL 報日僑華
郭日橋
育教僑華
一張四第二 B=TATERADO WAN KIU YAT PO –
小學
同學
暑期進修專欄
11. 5630
自然科學(四)
幾種趣味的化學實驗(下) (三)假想戰場
VICONKEROFÁCKEV
48C POTASSIUM NITRATE,
法卡紙上
VT | 2
• MAMORA FATINUM
એપોઇઝન
利旅遊合作篇目的 。 上次會链於本月初在馬尼拉舉行以推進非牟
| RAE SEEN AS AKCE NIESZ
三、調情取常张雪上的沿原,如出入境證, 收。
• V
(四)水滅不熄的火燄
var Sul,PHUR,) YT CARBONY
材料: 徳
A: 1 ADM
3. Aero
五期星2 日四十月八年〇七九一冧公年九十五國民奎 中
英
琴奏鳴曲大骞代表之工作
·更參與選定香港區出席東南亞區鋼 由五位考試官主持,其中之覺士君
·考期爲八月廿四日至十二月四日
英皇家樂院實科考試
考生近五千人
TERKERAGE 「將生薙四七六人 主力,而一九六九年則琴,不惜,共
九位若一支歌鐵文化中心舉行。
102.
「人,願時至堂外演
HUSKER CRE | 官將主持各項考試。【帝將惡風評選工作,繼列两式化裡,財會幫各
ERRAZKE
15KKELKOUT MOHDESTEGNE 庭岛的中國各大菲學频之概說,將這十八、十九两排下二师,在尖沙生 (北訊】中國文化協會得你本年度致入台 各大邵院校升學代辦
歡迎取錄僑生屆時前往參加聽講
中國文化協會十八、十九兩日舉行
大專生回國升學指導講座
BESAR PAGI CHENKELE WOME
於鼎州,烈士先將於八月十三日行 十四日至十二月四日。香潤做代與調後在一所星光行英國文化博會 RSES CARTHY SELDA== HEARTSPREC
亞洲學生旅遊研討會周年大會 下次由香港專上學聯主持
its cach. How much nuncy did he
gain?"
(STRONTIVEN NITRATE
SOLUTION:
The required amount which he gained
ANSWER:
500 x (35-30) cents = 2500g - $25 gained $25 or 25 dollars,
EXAMPLE
EXAMPLE 5
Find the
SÓLÍTION:
(五)應術建三
The 28), 122 energia — BOHALT CHLO RIDE) (COPPER SULPBATE);ERE CAMMONIUM CIFLORCOTED SO MCCOBATE OXIDE) »BA (ACETIC ACID V SPL SMSHEE ( COBALT: NITRATE) HONICKEL NITRATE) COBALT ACETATE, #776; • CVI-MANYA CHEA) »KONEČEMMECCS
CHIDWIFECME) 23 SEPTE
2.7 CM) ATF thym
3.PNB CUTITE AREA.
4. EMC CMUFIOND MEJA
5.D C855-MARATONON
6. E. Ho
ZANE HAK 1-0 SFLUG TONNE • CHEEPENDI
B.EXE FELGYNITS COUNTY
Petrol is sold at $2.80 per gallon. How much have to pay for 2 gallons and 2 prints of
required cos
SOLUTION:
ANSWER The required cost is
EXAMPLE 4.
$2.80
1 ton of goods is equally divided and packed into 8 hoxes. Each boy witchs 4 pounds when empty. "Whay is the weight of each box which laide) with soudu?” SOLLTTOV: The required.
of each box
Therefore
ANSWER:
EXAMPLE 6
ANSWER:
EXAMPLE
tive
The LCM of 18, 24 and 36 is
index form the LC.M.
2 x
fred LICAM.
Find when
least number such that the remainder
divided either by 15, or by 25-dr by
The I.Q.M, of 15, 25 and 35 is
SOLUTION:
納燃焼
„PŘÍME NUMBERS, HIC.F.
ANSWER =
FACTORS
required number is
520
Sinde 95
and
at 5 and 90
ach called a FWS FOR "MULTIPLE OF
-The MULTIPLE
(45) NUMPLES
遐想戰場的佈置
大柴的方
不能減熄的火
魔術書的輪廓
英文數學科
(四)
LESSON FOUR"
CHAPTER FOUR
MIXED PROBLEMS & PRIME NUMBERS, H.C.F. & L.C.
(A) MIXED PROBLEMS
EXAMPLE 1
What is the difference between
the product and
tient of 84 and 77
SOLUTION:
The product of of and
588
The quotient of 84 and 7 - 84 = 7 Therefore, the requi
588 12- 576
ANSWER: The required difference is 576.
EXAMPLE 2
A hawker bought 500
30, cents and sold then
Bad Number?
Primé "Xiin
Composite Numbere
pr
is dregsible only by used
is cligula Comansi be as: the product of them FNDEX
EXAMPLE 1
SOLUTION
ANSWER: LO5
EXAMPLE RA
Find the
SOLUT
The
ANSWER:
Wich
JP can be Priad
-called
sut ar
prtim
(1) MICHEST COMMON FACTOR (11.6.1.)
epias
70
A number which is a factor of two or more given numbers
is cafted la COMMON PACTOR of these numbers,
The greatest or highest number, which is a common fact
of two or more given, numbers, is called their HIGHEST COMMON FACTOR DE "H.CUP
EXAMPLE
Find the M
The highest
48.
SOLETION:
number t
of 2 which is highest power, of of each number us and there factur.
a factor of each 3,which is a factor no other common
Therefore
ANSWER The
EXAMPLE A
and 96 is
Find the largest number which is w Numbers 2002, 528 and 1008,
Top of the
SOLUTION
252
928
1008
ANSWER: The required largest
(11) LOWEST COMMON MULTIPLE (L.C.M
A number which is a múltiple of two or more given vibers, 15 en Lled à COMMON, MULTIPEE of these numbers,
The teast or lowest number, which is a common mul tipin
ven numbers 15 called their LOWEST vr two or more: COMMON AIR TIPLE, KLISM.):
EXERCISE
(1) Find the sun and product of the following
* numbers, 8, 15, 20 and
(2) Onc pound of beef costs $2.80. How
much would 5 lb. 8 oz. cost?
(3) A driver
10 minutes 10 seconds to ride round a racing track. If he travels at this speed for 12 rounds of the track, how long will hê tuke? (3) hr (4) A postman cycles 33 miles everyday.
He does not work on Sundays. How many
miles does he cycle in five wecks?. (4)__ (5) low many gallons of milk are needed
48 half-pint bottles?
(6) Tea a costs 80 cents an ounce and
tea B $1.00 a tael, What is the difference in price pur pound? (16 ounces a 12 tacls)
to
(5) gallons
(6)
A girl bought 3 books at $1.30 per book, 400 sheets of writing paper at 50% per hundred and 5 rulers at 40K each. How much did she pay together? (7)
(2) If a car travels at 30 miles per hour,
how long will it take to travel 250 inrles?
(9) A family uses bu catties of rice each
month. If the price of rice is $60 a picul for the period from January to March, 364 from April to July, and S63 from, August to December, how, much spent on rice for the whole
(10) A 154 inches taller than B.
years
ago he was 8 inches taller than B. If A has grown 2 inches in this time, hgw much has B grown?
EXERCISE
(1) Find the three common factors or
24, 42 and 282.
(2) Find the 11.C.F. of 36, 48 and 64 (3) 15 88, 144, and 452 are each divided
by the same number, the remainder is] 4. What is the greatest possible value- of the divisor?
(4) Fand the L.C.M. at 15, 25, 75 and 120.
M
K
(5) Write down in Index form the H.C.P
and 3x 11 x133
(6) Write down in index form the L.COM.
of Question No. (5).
(7) and the least number such that the
reminder 183 when it is divided either by 12, or by 18 or by 34. (8) Divide The L.C.M. of 12, 18 and
by their HÇE
(9) Find the sum of the L.C.M. and 11.C:F
of 45; 90 and: 120.
10) Write down the prime number between.
110 and 122.
(5):