买玩具。(e9_(H5D)q;z.|;t0n-i.o.i
10元2角, 7元8角, 8元2角, 6元。(e9_(H5D)q;z.|;t0n-i.o.i
(1)和一共要用-N)s1t6j(E2o:{,y(^元0@4d9H5l;f3Y3Y(h2K/n)[0t1G)l7G角。(e9_(H5D)q;z.|;t0n-i.o.i
(2)付10元钱买,应找回,X9f2U,B-Y._(V+P:W,@.b)E元5J8j/v角。(e9_(H5D)q;z.|;t0n-i.o.i
(3)付20元买一个和一个,应找回*w-J3`*f)O2R,D-~'v,^/V元。(e9_(H5D)q;z.|;t0n-i.o.i