1. Using mental calculation addition of double digit and single digit numbers without regrouping
2. Addition of douvle digit and single digit numbers with regrouping from the ones' place (1)
3. Addition by mental calculation of double digit and single digit numbers with regrouping from the ones' place (2)
4. Addition by mental calculation of double digit and single digit numbers with regrouping from the ones' place (3)
5. Addition by paper and pencil calculation of double digit and single digit numbers with regrouping from the ones' place
6. Addition by mental calculation of double digit and single digit numbers with regrouping
7. Finding a part of the pair summing seveal tens
8. Addition by mental calculation of double digit and double digit numbers with regrouping from the ones' place (1)
9. Addition by mental calculation of double digit and double digit numbers with regrouping from the ones' place (2)
10. Addition by mental calculation of double digit and double digit numbers with regrouping from the ones' place (3)
11. Addition by paper and pencil calculation of double digit and double digit numbers with regrouping from the ones' place
12. Finding each pair summing up to 100
13. Addition by mental calculation of double digit and double digit numbers with regrouping from the ten' place (1)
14. Addition by mental calculation of double digit and double digit numbers with regrouping from the ten' place (2)
15. Addition by paper and pencil calculation of double digit and double digit numbers with regrouping from the ten' place
16. Finding a part of several tens and some with which it sums up to 100
17. Addition by mental calculation of double digit and double digit numbers with regrouping from the place of ten and one (1)
18. Addition by mental calculation of double digit and double digit numbers with regrouping from the ones' and tens' place (2)
19. Addition by mental calculation of double digit and double digit numbers with regrouping from the ones' and tens' place (3)
20. Addition by paper and pencil calculation of double digit and double digit numbers with regrouping from the ones' and tens' place
21. Addition of three numbers by mental calculation (1)
22. Addition of three numbers using mental calculation (2)
23. Addition in various methods using mental calculation
Achievement test
Answer sheet