口算6N*v*s,P:y
12×5=3j(z;W5|3G.\2N.~.{6N*v*s,P:y
15×6=0j0}.g9i9i6i'B8t(O3d;m4_9]*F6A6N*v*s,P:y
20×3=,W0E2|6h/Z5|2m6N*v*s,P:y
30×5=;j/^+[5V4a.f1Z9r2O3q*d6N*v*s,P:y
0×8=.~)n,s6N*v*s,P:y
200×5=1J.e6o6s/w(x2M0S/c+}6N*v*s,P:y
0+980=,t,^1T;x7s;i8Q/o/K3E7@,U6N*v*s,P:y
33×3=0S/Z0i7l3H)m8F6N*v*s,P:y
20+50×2=1s5L'X3p9v(G:\6N*v*s,P:y
90-30×3=2x.|8l(N7z+}9a+w,Q8l2p)\/}9g6N*v*s,P:y