把小数化成百分数,百分数化成小数0.82= 0.03= 0.534= 0.004=36.4%= 49%= 8.5%= 0.6%=
用递等式计算,怎样算简便就怎样算: ①8.4×0.26+0.74 ②23.4÷7.8﹣2.1 ③0.25×13.2×4 ④2.65×1.7+13.5×0.17 ⑤0.78÷0.25×4 ⑥0.8×(3.2﹣3.2÷1.6)
脱式计算(能简算的要简算). ①9﹣18.9÷1.4 ②11.3+12.9+(8.7﹣10.9) ③17.6÷(17.6×2) ④6.4×3.18+4.6×3.18﹣3.18.
计算下面各题,能简算的要简算. 3.27+6.4+2.73+4.660﹣18.27﹣1.7399×47 102×12+98×12(210﹣62÷31)×425×16.
脱式计算:(能简算的要简算) ①2.4×1.5+3.6÷1.5 ②0.32×0.25+0.08÷4 ③7.38﹣5.14+3.62﹣2.86 ④5.4÷[0.51÷(1.2﹣1.03)].
能简便的用简便方法计算. 0.88×4.9+5.1×0.882.5×8×0.4×0.1250.65×201 21.36÷0.8﹣12.90.25×1.25×3.27.28+3.2÷2.5.