用纸片剪出∠A,然后用它度量∠B,并比较∠A和∠B的大小.
直接写得数.= == == 75%÷25%== =
= = = == = = == = = =
直接写出得数.+0.2= +﹣0.2= 5÷= ×1.5+3=3.6×= ×1.5= ﹣= 1﹣137.5%=
直接写得数﹣= ÷9= 1﹣= ×=÷= ÷= += ×=+= ÷= ﹣= ×=
直接写出得数.+= ﹣= ×2= ×=×= ÷4= ÷= 12×=÷42= ×= ×14= ÷4=