五年级上册数学《小数简便运算》暑期提升训练

五年级上册数学《小数简便运算》暑期提升训练


简介:
1、0.4×125×25×0.8 =(0.4×25)×(125×0.8) =10×100 =1000 2、1.25×(8+10) =1.25×8+1.25×10 =10+12.5 =22.5 3、9123-(123+8.8) =9123-123-8.8 =9000-8.8 =8991.2 4、1.24×8.3+8.3×1.76 =8.3×(1.24+1.76) =8.3×3 =24.9