口算题4b;X1z4m
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5＋9＝9n)A;T'J1I;K6C)n6e4b;X1z4m
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4＋7＝9};A*t*o0W4I1u-~(u*x:u6t8w5Y4b;X1z4m
6＋9＝6i7F4q;@2Z:{2q4b;X1z4m
12－10＝2P:Z8M:J6u-w+B4Y4b;X1z4m
8＋8＝)I0[3p;I4t)r2G/O4b;X1z4m
18－3＝2U'g/o-_/@(S+@4E+d+~3O4b;X1z4m
5＋7＝2a1w-N,w+U:K-|+z8o4b;X1z4m
6＋11＝1)w5J7I(n9C4b;X1z4m