ڰ˵ԪԾ
һ
9+39+5
ϡ><= 13 7+68+7 9+6
5+8 10-73+2+4
7+7
5 5+9
һ
ġһ㡣
9+2= 8+6= 9+4= 8+3= 16-2-4= 5+7= 9+9= 6+5= 9+7=
8+9= 9+5= 4+5+5= 3+9= 7+7= 2+8+7=
塢ʵ
8+8+
=17 9+=13
9+
=16 7+=11 6+
=16 9+=14 7+
=12 6+=14
9+
=15 =15
ͼʽ㡣
1.
2.
ߡ⡣
1.Сһ˶ٶ仨?
2.
(1)ĺһж?
= ()
(2)ĺʹƹһж?
= ()
3.ԭжٸ?
=()
4.̳һжٶ仨?
= ()
һ8 6 10 13 ڰ˵ԪԾο20 8 1 9 14 20 < = < < > = ġ14 11
14 13 11 10 12 18 17 17
14 ߡ9 1.10-6=47 9 (3 ) 9 2.6+8=145 2 8 (7 6 2.3.6+7=13(1)6+5=111.7+9=16() ((2))
ֻ) 5+8=13()4.8+8=16(())
11 12 14 16

