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# 北师大版一年级上册数学《小鸡吃食》

2 1

4 5

4

7

9

1 10

8 + 2 =10 2 + 8 =10

10- 2 = 8

10- 8 = 2

8+2= 10

10－2= 8 10－8 = 2

2+ 8 = 10

5 6 7 8 9 10 9 8 7 6 5 4 3 2 1 0

10个苹果分成两堆。你会怎样分？

10

10

1

9

9

1

( 1 ) + ( 9 )=10 10 - ( 1 ) = ( 9 ) 10 - ( 9 ) = ( 1 )

10

10

2

8

8

2

( 2 ) + ( 8 )=10 10 - ( 2 ) = ( 8 ) 10 - ( 8 )=( 2 )

10

10

3

7

7

3

( 3 ) + ( 7 )=10 10 - ( 3 ) = ( 7 ) 10 - ( 7 ) = ( 3 )

10

10

4

6

6

4

( 4 ) + ( 6 )=10 10 - ( 4 ) = ( 6 ) 10 - ( 6 ) = ( 4 )

10

5

5

( 5 ) + ( 5 )=10 10 －( 5 ) =( 5 )

5 种

------

1 和 9 组成 10。

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7

3 3 7

1

9

9

2

8

3

7

7

4

6

6

5

5

5

6

4

4

7

3

3

8

2

2

9

1

1

10 0

7

5

10

6

4

10

10

10

4、 2 4 6 8 10 1 3 5 7 9

1 8 2 7 3 6 4 5

10

10
7 6

10 9
1

3

4

10-3=7

10- 4=6

10- 9=1

10

10
2 0

9
5

8

10 4

10-8=2

10- 10=0

4+5=9

9

7

8
3

6

3

4

0

8

6+3=9

4+3=7

0+8=8

1

2 3

4 5 6 7 8

9

10 9

8

7

6 5 4

3 2 1

10

2

=

8

？条

10条

10

-

2

=

8

?条

10个

3 + 7 = 10

10 - 3 = 7

3 + 7 = 10 4 3 + 4 = 7 = 2 = 1

9 – 5 =
+

10 – 8 –

= 10

5 7

4

3
2 1

6

9

8

5