列式计算.①一个数增加5倍后与15的差等于117,这个数是多少?②的倒数去除9的,再加上9,和是多少?③比一个数多20%的数是48,这个数的一半是多少?
直接写得数:2.7﹣= 5.6÷0.08= ÷= 36×10%= =×9×= ﹣0÷+1= 1÷﹣÷1= 小时:120分= 7﹣7÷8=
﹣2.7= 14×= ÷5=1= = == ﹣= == = == 24= == = == = == = == = == = =0.25×8= 3.4﹣﹣= +0.5=10.5﹣1.05= = 10.01÷10%=1.5×= 80%= 1×9=3×=
(1)= (2)= (3)= (4)=(5)= (6)= (7)1.25×4×0.25= (8)=
直接写得数﹣= 1÷= 7×= 3÷=÷4= += ××8= 0÷=
直接写得数:+= 1﹣= ×= +25%=÷8= 4×25%= 0.36÷36%= 1﹣20%﹣=