toán lớp 5 q4

I toa n, t a g i a s u g i a th iet (di e u �i�n) n a o d 6 kh 6 n g h a y kho n g c6 tron g dieu ki � n da c h o cua ba i toa n B va v a o g i a t h i et d6 C Li n g voi n h un g d ie u ki � n da c h[.]

I toa n, t a g i a s u g ia th iet (dieu �i�n) n a o d kh6 ng h a y kho n g c6 tron g dieu ki�n da c h o cua ba i toa n Bva vao g i a th i et d6 CLing voi n h un g dieu ki�n da cho c u a bai to a n de de d a n g tl m each g ia i cua ba i toa n Day I a g ia thiet c6 y n g hia t� m thai v a dap s bai toan kh 6ng ph� t hu¢c vao g i a thiet d6 VI d � : Q uyt n g on moi qua c hia ba Ca m n g o n mo i qua c h i a l a m m voi M o i n g voi m c)t mh�ng, tra m n g voi C6 qua kh n g n h ieu du ch i a Hoi Bai la m : Gia s ir tat ca q ua deu co bao n h i eu q ua ca m, bao n h i e u q ua q u yt? Ia cam thl c6 s ph an fa: x = 70 (phan) 56 ph an dura Ia: 70 - 00 = 70 (phon) Mol/an thay mgt qua quyt bang m¢t qua cam thi s6 ph an tang them Ia: 1o - = (phanJ so qua q uyt Ia: 10 : = o (qua) S6 quii cam Ia: - = (qua) Vi Dap so : qua cam, o qua quyt d\1 2: Be d�t ong da n n ubc tren m