《2025年口算训练二年级数学下册北师大版升级版》

70 - 36 + 24 =
59 - 16 + 19 =
10 + 75 - 29 =
44 - 12 + 11 =
65 + 23 - 19 =
44 - 16 + 58 =
35 + 12 + 22 =
34 - 15 - 6 =
17 + 23 - 15 =
61 - 20 - 32 =
36 + 18 + 16 =
28 - 16 - 8 =

答案：

80 - 30 - 45 =
52 + 12 + 17 =
33 + 13 - 20 =
49 - 25 - 23 =
97 - 36 - 45 =
68 - 46 - 11 =
77 + 13 - 45 =
56 + 45 - 70 =
84 - 22 - 34 =
36 + 45 - 52 =
50 - 30 + 23 =
96 - 54 - 32 =

答案：

想一想，下面的图形分别表示几？
$\triangle + \triangle + \triangle + \triangle = 20$，$\bigcirc \times \triangle = 20$，$\square - \bigcirc + \triangle = 10$
$\triangle = ( )$，$\bigcirc = ( )$，$\square = ( )$

答案：