小孩数学题888+88+8+8+8=1000希望可以帮到您!{0}2,小学数学题目1500/50/40=0.75m1500/(50*40)=0.75米{1}3,小学数学题目c=2元rr=c/2燕=1cms=的r2=3.14cm2c=6.28c=r*3.14*2r=1s=3.14*r^2=3.14*1*1=3.14c=2派rr=c/2派=1cms=派r2=3.14cm2{2}...