F.1-F.2maths

2010-08-11 8:32 pm
(1)Fill in each of the lines in the following mathematical expression with suitable 1- digit number/2- digit number selected from 0,1,2,3,4,5,6.
-------- x --------------- = ------------ = ------------- ÷ ------------

(2)which of the following suitable to use 'Previous Information' to collect date?
(A)the popularity of a few brands of sweets.
(B)Citizens' opinions on environmental issues.
(C)the frequencies of the residents in a public housing estate doing their shopping on the Internet in a month.
(D)the unemployment rates in different months of 2000.

(3)(a) there are 4 cages in garden A, each cage can keep 4 types of animals, each types has 4 animals, each animals has 4 legs.Use index notation to express the total number of
(i)animals
(ii)legs
in garden A.Then find their values.
(3)(b)there are 8 cages in garden B. each cage can keep 8 type of animals and
each type has 8 animals.Use index notation to express the total number of animals in garden B.then find its value.
(3)(c)Samuel claims that the total number of animals in garden B is 4 times that of animals in garden A.
(3)(c)(i)write down his claim in equation.
(3)(c)(ii)do you agree with him?explain.

(4)A and B are two consecutive numbers (B ﹤A ). half of B exceeds one-fourth of A by 1. Find the values of A and B.

回答 (2)

2010-08-17 11:29 pm
✔ 最佳答案
(1) 3x4=12=60÷5
(2)D
(3)(a)(i)the total number of animals in garden A
=4^3
the value of animals in garden A
=64
(3)(a)(ii)the total number of legs in garden A
=4^4
the value of legs in garden A
=256
(3)(b)the total number of animals in garden B
=8^3
the value of animals in garden B
=512
(3)(c)(i)a=the total number of animals in garden A,
b=the total number of animals in garden B
4a=b
(3)(c)(ii)no
(4)A=B+1
∴B/2=A/4+1
B/2=(B+1)/4+1
2B=B+1+4
B=5
∴A=5+1
=6
參考: me
2010-08-14 5:55 am
1 .3X4=12=5 ÷60


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