(共12张PPT)
交换②
4
9
+ =
9
14
+ =
推算
+10
+10
13
23
9
14
+ =
4
9
+ =
13
23
7+ 6=
27+26=
8+35=
38+35=
49+47=
9+47=
13
53
43
73
96
56
4+19=
19+14=
23
33
13
53
+20
+20
+40
56
96
+ =
9
47
+ =
49
47
推算
56
96
+ =
+ =
9
47
49
47
+40
+40
+ =
9
47
+ =
49
47
+10
3+ 3=
13+13=
23+23=
33+33=
43+33=
+10
+10
+10
+10
+10
+10
+20
+20
+20
+10
+10
+20
想一想,算一算!
+10
6
3+ 3=
13+13=
23+23=
33+33=
43+33=
+10
+10
+10
+10
+10
+10
+20
+20
+20
+10
想一想,算一算!
3+ 3 =
13+13 =
23+23 =
33+33 =
43+33 =
26
46
66
76
6
26
46
66
76
+10
+10
+20
+20
+20
+40
+30
+30
+60
+40
+30
+70
想一想,算一算!
3+ 4=
13+ 4=
14+13=
23+14=
24+23=
3+ 4=
13+ 4=
23+14=
+ =
+ =
14
13
24
23
14
13
24
23
3+ 4=
13+ 4=
14+13=
23+14=
24+23=
7
17
27
37
47
想一想,算一算!
8+ 8=
18+18=
28+28=
28+38=
38+38=
16
36
56
66
76
5+ 6=
16+15=
15+26=
26+25=
35+36=
11
31
41
51
71
想一想,算一算!
23
18+ 5=
+ =
+ =
+ =
+ 8=
29
7
44
9
23
6
36
36
29
44
53
目标
53
跳啊跳!跳到家!
23
18+ 5=
+ =
+ =
+ =
+ 8=
29
7
44
9
23
6
36
36
29
44
53
目标
53
跳啊跳!跳到家!
①
②
③
④
⑤
11
9+ 2=
+ =
+ =
+ =
+22=
45
32
11
12
77
23
23
100
23
目标
100
跳啊跳!跳到家!
①
②
③
③
11
9+ 2=
+ =
+ =
+ =
+22=
45
32
11
12
77
23
23
77
100
45
23
目标
100
①
②
③
④
⑤
跳啊跳!跳到家!