问题 解答题 直接写出得数25%×40=1-0.99=36.2÷6.1≈19+89×2=0.4+12=6.13+0.99+3.88≈ 答案 25%×40=10,1-0.99=0.01,36.2÷6.1≈6,19+89×2=179,0.4+12=0.9,6.13+0.99+3.88≈11.