五年级数学上册《小数简便计算》专项训练,必考题型练习!

五年级数学上册《小数简便计算》专项训练,必考题型练习!


简介:
1.25.9-6.47-3.53 =25.9-(6.47+3.53) =25.9-10 =15.9 2.0.5×7.49×2 =0.5×2×7.49 =1×7.49 =7.49 3.0.45×101 =0.45×(100+1) =0.45×100+0.45×1 =45+0.45 =45.45 4.8.8×12.5 =1.1×(8×12.5) =1.1×100 =110 5.25×0.125×8 =25×(0.125×8) =25×1 =25 6.5.34×99+5.34 =5.34×(99+1) =5.34×100 =534 7.25×0.72 =25×0.8×0.9 =20×0.9 =18 8.0.78×101 =0.78×(100+1) =0.78×100+0.78×1 =78+0.78 =78.78