直接写出得数.5.4+8.5= 150×6= 6.78+0.23= 10﹣6.5+3.5= 7.5×100= 2.5+0.9=287﹣199= 0.3×125×8= 1﹣0.09= 927÷9= 6.3×99+6.3= 3.5+0.78+6.5=
选择最适合的方法,写出递等式计算的过程 39.6﹣6.53+3.47.0.0125×32×0.25.[90﹣(8.25÷0.6+1.25)]×0.01. 38×2.5+76+38×5.5.3.6×31.4+43.9×6.4. 5.7×5.7+5.7×4.2+5.7×0.1.
计算,能简算的要简算 7.26+3.2÷2.514.6﹣4.6×2.80.8+0.8+…+0.8+15×0.2 15个0.8 14.5×1024.05÷0.5﹣1.149.99×99+9.99.
递等式计算,能简算的用简便方法算: 8.46﹣8.46÷4+4.98543.56÷12.56.4×3.28+4.6×3.28﹣3.28 99.9×10.1.
下面各题怎样简便就怎样计算 (1)12.64﹣(3.96+4.64) (2)36.26﹣4.78+3.74 (3)7.34+7.57+12.66+6.43 (4)78.65﹣23.12﹣14.88.
下面各题,能简便算的要简便 (100+8)×0.1254.8×102 5.8×8.5+5.8×0.5+5.8(1.5+4.6)×(4.6﹣1.5)