1 + 1 = 2 + 2 = 1 + 3 =
2 – 1 = 3 – 3 = 4 – 1 =
看图填一填。
2 + 1 =
+ 1 =
+ =
在里填上“<”“>”或“=”.
1+45
35-3
4-11+1
+=
+= +=
2+3= 3-1= 0+1= 5-4=
4-0= 2+2= 3-3= 1+2=
(个)
2+3=5
一共需要多少元?
□○□=□