2+
2-
400+20+3
方块
心算
100
24+55=
79
100
83-20=
63
100
45+23=
68
100
218+136=
354
100
298+20=
318
200
39+32=
71
200
99-35=
64
200
389+425=
814
200
332+300=
632
200
199+56=
255
300
38+46=
84
300
92-38=
54
300
345+235=
580
300
400+154=
554
300
299+143=
442
400
16+95=
111
400
90-69=
21
400
299+366=
665
400
234+159
393
400
499+125=
624
500
99+88=
187
500
100-63
37
500
998+125
1123
500
458+498=
956
500
799+167=
966
M
e
n
u