5/11+5/12+5/13+5/14
=115/132+5/13+5/14
=2155/1716+5/14
=1.612970363
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5/11+5/12+5/13+5/14
=115/132+5/13+5/14
=2155/1716+5/14
=1.612970363
5/11+5/12+5/13+5/14
5/11+5/12=5/13+5/14
Phép tính 2 2/3 × 5 1/4 =?
A. 11. B. 12. C. 13. D. 14
Tính nhanh:
a).31/17+5/13+8/13-14/17 ; b).5/7x22/11+5/7x9/11+5/7
1+2-3-4+5+6-7-8+9+10-11-12+13+14-...-299-300+301+302 =?
1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14=
1+[2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17]*0,000001
Tính
1+2+3+4+5+6+7+8+9+10+11+12+13+14
1+2-3-4+5+6-7-8+9+10-11-12+13+14-15-16+...+301+302