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射击比赛 2 11-9= 11-2= 9 13-7= 6 13-3= 10 12-9= 3 11-3= 8 15-8= 7 15-9= 6 17-9= 2 11-2= 13-3= 11-3= 15-9= 12-8= 9 6 10 3 8 7 6 8 4.

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Presentation on theme: "射击比赛 2 11-9= 11-2= 9 13-7= 6 13-3= 10 12-9= 3 11-3= 8 15-8= 7 15-9= 6 17-9= 2 11-2= 13-3= 11-3= 15-9= 12-8= 9 6 10 3 8 7 6 8 4."— Presentation transcript:

1 射击比赛 2 11-9= 11-2= 9 13-7= 6 13-3= 10 12-9= 3 11-3= 8 15-8= 7 15-9= 6
17-9= 2 11-2= 13-3= 11-3= 15-9= 12-8= 9 6 10 3 8 7 6 8 4

2 ?条 12条

3 补充算式 14- = 14- =

4 18-( )=11 16-9=( ) 5>( )+3 7+( )=13 8+5=( ) 13-4=( ) 12-( )=4
15-( )=9+5 5>( )+3 7+( )=13 8+5=( ) 13-4=( ) 6+5=( )+7 12-( )=4 ( )+4=15 6+9=( ) ( )-8=7 14-9=( ) 8+7+3=8+( ) ( )-5=6 ( )-9=4 9+3=12-( ) ( )-4=15 ( )+9=11 13-7=( )+( )

5 18-( )=11 16-9=( ) 5>( )+3 7+( )=13 8+5=( ) 13-4=( ) 12-( )=4
15-( )=9+5 5>( )+3 7+( )=13 8+5=( ) 13-4=( ) 6+5=( )+7 12-( )=4 ( )+4=15 6+9=( ) ( )-8=7 14-9=( ) 8+7+3=8+( ) ( )-5=6 ( )-9=4 9+3=12-( ) ( )-4=15 ( )+9=11 13-7=( )+( )

6 胜利了! 8 14 7 17 14 12 16 7 15 -3 +6 -7 +2 +9 +8 -4 -5

7 + = 4 12 5 11 6 10 7 9

8 猜猜看,双胞胎中谁是哥哥? < < 12-6 11+2-6 < 9+5 8+5-6 =6 11-4 =7 18-5+2
=15 =7 < 9+5 8+5-6 =7 18-9+5 =14 =14 18-9 =9


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