4 300 ǧ˻ƶե 39 ǧˣƽ l ǧ˻ƶեͶǧˣե 1 ǧҪǧ˻ƶ
5һС 12 Сʱ 27 С 6 Сʱ 13 С 8 Сʱ 19 ˭죿
6ѧУԭ 36 һЩ
3 ࣿ 5ʣ ʣ 5 ʣ
6 4 9
˼άչ 20 ֣ÿ 10 ֣
1 1 11 ķӼȥһȻĸȻȻԼΪ 53 7 ȻǶ٣
2꼶ѧμͶ(1)ȥ 24 ˣ(2)ȥ 36 ˣ(3)ȥ 42 ˣҪǷֳȵС飬ѧ ܴңÿСˣԷֳɼ飿
Сѧѧѧѧϰ
棩
ս̰꼶£
༶
ѧ
嵥Ԫʹ
÷
ܷ 120 ֣ 4 ҳʱ 90 ӣ
һ⡣ 27 ֣ÿ 9 ֣
1.ֱд
5 1 1 2 1 2+ = - = + = 6 2 7 3 3 2 3 1 3 3 3- = + = - = 3 8 8 4 4 2.еݵʽ㣨ܼҪ㣩
5 - 2 + 2 + 7 2 + 1 9 5 9 9 9 4
1 1
+ = 2 3 5 1 - = 6 6
7 5 + = 10 10 7 5 - = 10 10 9 - 1 + 1 - 6 8 7 8 7
3.̡ⷽ 2 +x= 3 5 2
x- 5 = 3 12 8
3 +x= 11 5 12
⡣ 23 ֣ÿ 1 ֣
1 4 ǰѵλ1ƽֳ( )ݣʾ( )ݵҲ
7 ǰѡ4ƽֳ( )ݣʾ( )ݵ
2 6 ķλ( )ټ( )ķλͳС
7
11 ķλ( )ټ( )ķλͳС
12
1 + 1 ĺ͵ķλ( 3. )һ( )ķλ 8 7
4ġϡ= 4 7 6 5 5 1 1 1 20 -
5 8 5 6 19 6 2 2
1 1 1 4 = 2 5 10 5
6һ 3 ǧˣѾϵ 2 ʣϵ( )
3
Ե 2 ǧˣʣ( )ǧˡ
3
7ĸ 12 ĺ( (
)
8Ӷ 1ĸֱССĺ һλĺ(
)
ѡ⡣ 10 ֣ÿ 2 ֣
1 7 7 ô( )
10 9
A
B CС
2һ 1 3 (
4 7
A 4 B 5 C 19
11 28 28
)
)ĸ 6 ĺ
5ʵš 5 1 1 2 1 11 = = 9 2 18 3 4 12
3ƿһ飬Ѿȫ 2 ʣµıѾĶȫ( )
9
A 2 B 7 C 5 9 9 9 3
4 ķĸ 10ҪʹĴС䣬Ӧ( )
5
A 9 B 10 C 6 5 3 ǧƽֳ 5 ݣÿ 1 ǧ˵( A 1 B 1 C 3 3 5 5 ġ⡣ 10 ֣
1ĸӵʽϺʵ ֣4 ֣
)
+
9
= 10
9 =
+
10
2еĹա6 ֣
1 ( (1)1 1 1 (
2 4 8
1 1
(2) 1 11 2 2 (
2 2 2 1 1 3
(3) l( )( )
4 2 4
塢⡣ 30 ֣ÿ 6 ֣
1һÿ 2 Сʱѧѧϰ 2 Сʱʦָ 1 Сʱʣ
3 5 6 ʱѧɿҵɿҵҪöСʱ
1ף
2.һ 3 ꣬ 3ֻռ
7 4 8 صļ֮
3һΣһ 5 ף׳ 2 ףεܳ
6 5 ٷף
4һ˿ȥ 3 ףȥıʣµĶ 3 ף˿ԭף
4 10
5סˮױˮ 3 ǧˣұ 1 ǧˮˮͬ
4 5 ࡣˮһǧˣ