脱式计算(带*号的要简算)
19.8×0.54÷0.081 *0.25×32×1.25 1.89÷0.54﹣7.1÷2.5
*0.25×26×40 *8.7×99 *3.14×7.9+31.4×0.21.
脱式计算(带*号的要简算)
19.8×0.54÷0.081 *0.25×32×1.25 1.89÷0.54﹣7.1÷2.5
*0.25×26×40 *8.7×99 *3.14×7.9+31.4×0.21.
试题篮
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