ΜΟΝΑΔΕΣ ΔΕΚΑΔΕΣ

1. Συμπληρώνω τις ισότητες.

10 + 5 = .........              10 + ......... = 12

10 + 8 = .........              10 + ......... = 19

10 + 6 = .........              10 + ......... = 14

10 + 3 = .........              10 + ......... = 15

10 + 7 = .........              10 + ......... = 11

                                                     

17 – 7 = .........               18 - ......... = 10

14 – 4 = .........              16 - ......... = 10

13 – 3 = .........              13 - ......... = 10

19 – 9 = .........              12 - ......... = 10

12 – 2 = .........              15 - ......... = 10

2.. Συνεχίζω όπως στο παράδειγμα.

25 = 10 + 10 + 5                          36 = 10 + 10 + 10 + 6

27 = ...... + ...... + ......                   32 = ...... + ...... + ...... + ......

29 = ...... + ...... + ......                   33 = ...... + ...... + ...... + ......

22 = ...... + ...... + ......                   39 = ...... + ...... + ...... + ......

                             45 = ...... + ...... + ...... + ...... + ......

                             47 = ...... + ...... + ...... + ...... + ......