10以内连加连减汇总ppt课件.ppt

1. 口算8+2=10 10-3= 7 8-7= 1 6+4=100+9= 9 5+5= 10 10-8=22+5=73+7=10 10-2= 8 4+3= 7 7+1= 8?( ) + ( ) = ( ) 3 2 5为什么用加法计算?8 只？8 - 3 = 5 5 + 2 + 1 = 87 79 只 ？9 4- -2 = 354 + 3 + ( ) = ( )?1 810 - 5 - ( ) = ( ) 3 29 + 3 + 5 = 2?10 - 3 - 3 = 4？看谁算得又对又快10 08 21910697+2+1= 9-6-3=3+3+2= 10-6-2=10-4-5=8+1+0=4+2+4=9-0-3=0+2+7= 10-5-2= 3