+ =; — =
+ = ; —=
魔术师的三角(按左、右、下的顺序填)
和为15
10+2=
15-5=
16+3=
18-7=
14-4=
10+8=
19-1=
12-2=
13-1=
17-6=
15+2=
11+8=
9+=11 9+=17 9+=13
11-9= 17-9= 13-9=
②8-4+10 =
③7+9+3=
④14-4-7=
⑤5+7-10=
⑥3+4+8=
5+2= 8+2= 6+9=
8-4= 8-2= 12-2=
9-6= 5-4= 9+7=
7+3= 4+6= 7-4=
5+3-3= 12-2-6= 9-4+2=
9-2+6= 7+3+8= 9-9+5=
16-6= 4+4+4= 5+4= 8-8= 15-10= 17-7-0=

14+5= 11-7= 13+5= 18-6=
12-8= 3+12= 13-5= 8+10=
-7=3



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6+6=□
18-5=□
|
|
|
|
|
|
原来有 |
9辆 |
10辆 |
( )辆 |
|
又开来 |
8辆 |
( )辆 |
3辆 |
|
一共有 |
( )辆 |
15辆 |
8辆 |

原来有多少条鱼?
