デジブ用英語
- ページ： 6
- 4th Kyu Section 2
(11) (12) (13)
144
32
unit
(
l
)
In any arrangement, there are always four marbles at the corners. In the nth arrangement, each side has n marbles excluding the corners. So, there are 4n + 4 marbles in the nth arrangement.
Answer: 4n + 4 (14)
4AGE and 4CGF
equal to the corresponding parts of the second triangle. (ASA)
(15) Two angles and the included side of one triangle are (16) (17) (18) (19) (20)
14
65
times
unit
(
unit
%
m3
) )
1154
x + y = 7,
( x y 3 + = 3 6 2 x+y =7
2x + y = 9 x+y =7 x=2
(
x y 3 + = 3 6 2
Multiply both sides of the first equation by 6 to remove the fractions and subtract the second equation from the first one. Then I get x = 2 . Substituting x = 2 into the first equation, y = 5.
Answer: The distance from the bus stop to the mountain pass is 2 km. The distance from the pass to the train station is 5 km.
How many times have you taken Suken before? (a) First time (b) Once (c) Two or more times: ( ) times Indicate the following Suken you Which problems did you think have already passed. were interesting? Write the problem numbers in *4th Kyu *5th Kyu squares. *6th Kyu *7th Kyu *8th Kyu The Mathematics Certification Institute of Japan
●How long did it take you to solve these problems?
(
) minutes
- ▲TOP
