题文
直接写得数．
256﹣198= 34.6+15.4= 1300﹣497= 0.81+15.3= 6.3÷10%=
÷0.75= +
= ×
= 1÷3×
= 9×÷9×=
直接写得数．
256﹣198= 34.6+15.4= 1300﹣497= 0.81+15.3= 6.3÷10%=÷0.75= += ×= 1÷3×= 9×÷9×=
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