数一数,算一算.
![]()
|
□+□=□ |
□-□=□ |
|
□+□=□ |
□-□=□ |
数一数,算一算.
![]()
|
□+□=□ |
□-□=□ |
|
□+□=□ |
□-□=□ |
把下面的数用小棒摆一摆.
|
20 |
16 |
14 |
13 |
|
_________ |
_________ |
_________ |
_________ |
数一数,算一算.
![]()
|
□+□=□ |
□-□=□ |
|
□+□=□ |
□-□=□ |
数一数,算一算.
![]()
|
□+□=□ |
□-□=□ |
|
□+□=□ |
□-□=□ |
把下面的数用小棒摆一摆.
|
20 |
16 |
14 |
13 |
|
_________ |
_________ |
_________ |
_________ |