列竖式计算． 3.056+0.978 5﹣2.63 0.15×3.2 18.27÷2.1．
直接写得数．×=÷2=×14= 10×=×2=×=÷=÷=
直接写出得数×10=+= 52×= 9÷=÷= 11﹣= 0÷×=﹣+= 1÷9×=
直接写出得数．=========================
直接填得数×=×= 16×=÷= 1÷=÷= 9÷=÷33= 1﹣25%= 75%+0.25=÷=﹣=
直接写出得数．= 80%= 1÷10%= 74×4×25%=×15%=
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×
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×14= 10×
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×2=
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×10=
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= 52×
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= 1÷9×
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×
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= 16×
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= 9÷
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÷33= 1﹣25%= 75%+0.25=
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﹣
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= 1÷10%= 74×4×25%=
×15%=
