五年级上册数学小数混合运算专项练习 姓名:____________ 日期:____________ 用时:____________ ※(能简算的简算)※ 0.74×102 =0.74×(100+2) =0.74×100+0.74×2 =75.48 0.86×199 =0.86×(200-1) =172-0.86 =171.14 1.5×(7.7-1.5) =1.5×6.2 =9.3 (8.3-4.3)×1.3 =4×1.3 =5.2 0.5×98 =0.5×(100-2) =50-1 =49 5.9×4.8-3.9×5.9 =5.9×(4.8-3.9) =5.9×0.9 =5.31 3.8×3.7+3.7×6.8 =3.7×(3.8+6.8) =3.7×10.6 =39.22 4.3×7.7-4.8×4.3 =4.3×(7.7-4.8) =4.3×2.9 =12.47
