Subtraction using parking.
E.g. 132-68
130-60=70
70-8=62
62+2=64
1. 123-85 2. 142-79 3. 213-88 4. 342-196
5. 333-187 6. 302-188 7. 216-197 8. 1006-289
9. 1010-456 10. 1260-850
Number Knowledge
11. 352 + ? = 1000
12. 3.52 + ? = 10
13. 3520 + ? = 10 000
14. 0.352 + ? = 1
15. 6750 + ? = 10 000
16. 0.675 + ? = 1
17. 675 + ? = 1000
18. 6.75 + ? = 10
Make up 4 more of your own just like I have above.
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