7×101 5.5×9.8 82×0.9 0.36×0.25 100-15×4.6 2.04×52 9＋5.29

应该1.7×101=1.7×（100＋1）＝170＋1.7＝171.75.5×9.8＝5.5×（10－0.2）＝55－1.1=53.982×0.9＝82×（1－0.1）＝82－8.2＝73.80.36×0.25 ＝0.6×0.6×0.5×0.5=0.3×0.3=0.09100-15×4.6=100－15×4－15×0.6=...