5 以 内 组 成 分 解 练 习一,填空:1 22 3 34 1 1 2 1 3 3 4 5 1 1 3 2 4 5 5 5二,填上适当的数:3 + ( )= 4 5( ) = 1 2 + ( )= 3 3( ) = 00 + ( )= 5 4( ) = 34 + ( )= 5 2( ) = 21 + ( )= 2 5( ) = 3三,在 里填上,=.2 + 2 2 - 2 4 + 1 5 - 13 + 1 5 - 1 4 - 2 5 - 24 - 0 4 + 0 3 + 2 3 -2四,看谁做的又快又对:2 + 1 = 5 + 0 = 4 - 3 =3 + 2 = 0 + 2 = 5 - 0 =2 + 2 = 3 + 0 = 5 - 2 =1 + 4 = 0 + 4 = 5 - 5 =
