Oblicz 2/3+1/3. 3 5/8+7/8. 4 2/5+3 4/5. 6 2/5+3 1/5+ 2 4/5.
4 5/6-4/6. 5 5/6-4. 5-2/5. 5 1/6-2 5/6.
1/2+3/4. 1/3+7/9. 5/6+1 1/4. 1 3/5+2 4/15. 2 1/4+1 2/3. 1 5/6+7/9. 7/10+4/5+1/2. 3/4+5/7+1 1/2. 7/8+1/2+2/4. 2 1/6+7/10+1 2/5. 1 7/8+1/3+2 5/6. 2 7/12+1 1/15+1/2. 1/2-1/4. 5/6-2/3. 3/4-3/8. 3 5/9-1/6. 1 3/4-5/6. 2 1/9-1 5/6. 7/8-1/4-1/2. 2 3/7-3/4-1 1/2. 2 5/6-7/8-1 1/4. 3 11/12-5/9-1 3/4. 10-3 1/4-1 3/5. 7-2 1/2-1 4/5. Pliss na jutro szkole mam na 7