文档介绍:32 X 3=
60 X 3=
18X 10=
X 100=
6- 100=
49 X 2=
12X 7=
24X 100=
X 100=
-100=
43 X 4=
72 X 5=
X 10=
-10=
- 100=
32 X 4=
82 X 5=
X 100=
-100=
-10=
口算
14X 9=
X 2=
X 200=
23X =
X 3=
17X 8=
5X =
X 40=
X 80=
X 7=
20 X 4=
X 4=
100X =
X 20=
X 5=
42 X 3=
X 0=
3X =
X 40=
X 20=
口算
X 3=
X 40=
X 10=
=
X 2=
X 4=
X 4=
X 40=
10X =
X 6=
X 7=
X 4=
2X =
X 4=
X 5=
X 3=
X 8=
3X =
X 7=
X 9=
口答它们的积有几位小数
X =
X =
X =
X = X =
X =
X =
X =
X = X =
X 3=
X = X = X = X
X =
X 8=
X 2=
X =
X 2X
4X X =
7X X 0=
X X
= +
X 5 =
计算
X 8=
X 17=
X 5=
X 2=
3X X 7=
X =
X =
X 4=
X 8=
5X 4X =
X =
X 10=
X =
X 7=
8X X 5=
X X = X + X
计算
X =
+=
X 2=
X =
X =
X =
-=
X =
X 7=
X 70=
X 5=
+=
X =
X =
X =
X 5=
-=
90X =
X =
X =
计算
X =
43 X =
X 7=
X =
X =
X =
X 5=
X =
X =
X =
X =
X =
X 20=
65X =
X =
X =
X 4=
X =
X 50=
X =
- X =
+ X 500=
X - X =
X = X 200= X =
X = X 3= 30X =
X X = X + X =
口算
X =
X =
X =
X 3=
X =
X 4=
X =
X 100=
30X =
X