一、比一比，看誰(shuí)做得又對(duì)又快。
9+1 = 4+2 = 10-3 = 5-5 = 3+5 =
4+4 = 7-7+2 = 6+2-4 = 8+0+1 = 9-0-6 =
二、我會(huì)填。
(1).誰(shuí)的火車開(kāi)得快?
10→ → → → 9 → → → →
(2) 、
4-( )= 3 ( )+3 = 3 ( )+2 = 7
( )-0= 2 ( )+1= 7 ( )-9= 0
0+( ) = 6 ( ) -0 =9 ( )﹢7=10
( )-( )=3 ( )+( )=( ) ( )-( )=( )
三、烏龜和小白兔賽跑。
7+1 9-4 4+5 8-2 9-7 ____<____<____<____<____
2+8 8-7 3+6 7-5 7-3 ____>____>____>____>____