Optellen tot 100 met TT
| 70 | + | 10 | = | 80 | | | 20 | + | 10 | = | 30 | | | 70 | + | 10 | = | 80 | | | 20 | + | 20 | = | 40 | | | 80 | + | 10 | = | 90 | | | | 30 | + | 30 | = | 60 | | | 40 | + | 10 | = | 50 | | | 80 | + | 10 | = | 90 | | | 60 | + | 20 | = | 80 | | | 40 | + | 10 | = | 50 | | | | 80 | + | 10 | = | 90 | | | 30 | + | 10 | = | 40 | | | 20 | + | 60 | = | 80 | | | 60 | + | 10 | = | 70 | | | 70 | + | 10 | = | 80 | | | | 90 | + | 10 | = | 100 | | | 30 | + | 10 | = | 40 | | | 50 | + | 20 | = | 70 | | | 90 | + | 10 | = | 100 | | | 70 | + | 20 | = | 90 | | |
| | 20 | + | 10 | = | 30 | | | 10 | + | 40 | = | 50 | | | 80 | + | 10 | = | 90 | | | 30 | + | 10 | = | 40 | | | 70 | + | 10 | = | 80 | | | | 10 | + | 10 | = | 20 | | | 20 | + | 50 | = | 70 | | | 40 | + | 10 | = | 50 | | | 70 | + | 10 | = | 80 | | | 80 | + | 10 | = | 90 | | | | 30 | + | 40 | = | 70 | | | 70 | + | 10 | = | 80 | | | 50 | + | 40 | = | 90 | | | 70 | + | 10 | = | 80 | | | 10 | + | 40 | = | 50 | | | | 40 | + | 50 | = | 90 | | | 30 | + | 10 | = | 40 | | | 20 | + | 20 | = | 40 | | | 80 | + | 10 | = | 90 | | | 60 | + | 30 | = | 90 | | |
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