题目
直接写得数.18÷ = ×0.15= × = 6.8÷10%= (1+20%)×(1+30%)= ×75%= 2﹣ ÷ = 62﹣52= 3.6× + ×3.6= 3+5+7+9+11+13+15=
答案:18÷ 67 =21 35 ×0.15=0.09 34 × 815 = 25 6.8÷10%=68 (1+20%)×(1+30%)=1.5643 ×75%=1 2﹣ 78 ÷ 710 = 34 62﹣52=11 3.6× 16 + 56 ×3.6=3.6 3+5+7+9+11+13+15=63