1. 14-4 16-6 13-3 11-1 19-9 15-5 12-2 18-8 10-□=3 10-□=6 10-□=4 10-□=9
10-□=10
10-□=5
10-□=1
14-4
16-6
13-3
11-1
19-9
15-5
12-2
18-8

2. =( ) 12 10 7
7-5=2
take away from ones :
10+2=12
add with tens :

3. =( ) 8 5 10
10-7=3
take away from tens :
3+5=8
add with ones :

4. 15-7＝ 8 5 10 10
10-7=3
take away from tens :
3+5=8
add with ones :

5. 15-7＝ 8 10
10-7=3
take away from tens :
3+5=8
add with ones :

6. 2 10 12-4＝ 8 10-4=6 6+2=8 First take away from tens:
Second add with ones:

7. Write down the steps by the picture.
=( )
_________
First step:
_________
Second step:
Write down the steps by the picture.

8. Write down the steps by the picture.
=( )
_________
First step:
_________
Second step:
Write down the steps by the picture.

9. I use the chart to calculate, I can't take away 8 counters.
tens
ones
1 ten
=( ) ones 10
=( )
_________
First step:
_________
Second step:
I use the chart to calculate,
I can't take away 8 counters.

10. 11-6
14-7
12-9
15-6
11-9 7 5 1 6 2 9