二十以内数分解.doc

文档介绍：二十以内的数的分解
二十以内的数的分解
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二十以内的数的分解
2 2 3 3 4 4 4
0
2
1
1
0
3
1
2
0
4
1
3
2
2
0+2=
0+3= 3–0=
0+4=
4–0=
1+1=
3+0= 3–1=
4+0=
4+1=
2–0 =
1+2= 3–2=
1+3=
4–2=
2–1 =
2+1= 3–3=
3+1=
4–3=
2+2=
4–4=
5
5
5
6
6
6
6
0
5
1
4
2
3
0
6
1
5
2
4
3
3
0+5=
5–0=
0+6=
6–0=
5+0=
5–1=
6+0=
6–1=
1+4=
5–2=
1+5=
6–2=
4+1=
5–3=
5+1=
6–3=
2+3=
5–4=
2+4=
6–4=
3+2=
5–5=
4+2=
6–5=
3+3=
6–6=
7
7
7
7
8
8
8
8
8
0
7
1
6
2
5
3
4
0
8
1
7
2
6
3
5
4
4
0+7= 3+4= 7–2=
0+8=
3+5=
8–3=
7+0= 4+3= 7–3=
8+0=
5+3=
8–4=
1+6=
7–4=
1+7= 4+4=
8–5=
6+1=
7–5=
7+1= 8–0=
8–6=
2+5= 7–0= 7–6=
2+6= 8–1=
8–7=
5+2= 7–1= 7–7=
6+2= 8–2=
8–8=
9
9
9
9
9
0
7
1
6
2
5
3
4
0
8
0+9= 3+6= 9–0=
9–6=
9+0= 6+3= 9–1=
9–7=
1+8= 4+5= 9–2=
9–8=
8+1= 5+4= 9–3=
9–9=
2
+
7 =
9–4=
7
+
2 =