直接写出得数.0.89﹣0.29= 125×8= 1﹣0.06= 24×5= 2.5+8.5=4×25= 5.3+4.7= 99.2+0.08= 87.3﹣4.4﹣5.6= 36×7+7×64=
脱式计算:(能简算的要简算). ①5.6×0.7+0.2×5.6+0.56 ②1375+450÷18×25 ③÷7+× ④91×.
计算: ①3.2×1.25×0.25 ②5.8×[1÷(2.1﹣2.09)] ③3150×101﹣3150 ④42÷(12+23 ) ⑤34×78+18×75% ⑥(78﹣516)×(59+23)
下列各题,能用简便的要用简便方法计算. ①17.25+3.05+2.75+3.95②24×(+﹣) ③×(×17﹣)④(﹣)×(+)
①1.25×0.25×0.8×4 ②29.8﹣(9.8+2.99÷2.3) ③(﹣15.3)××2.4 ④1.75×0.25+0.25×6.25 ⑤( +)×8+.
递等式计算.(能用简便算法的用简便方法计算) 1.5×1052.33×0.5×424.6+18.7+15.4 1.2×2.5+0.8×2.52.05÷0.82+33.6 9.07﹣22.78÷3.4.