六上数学期末【分数百分数】混合运算

六上数学期末【分数百分数】混合运算

  • 简介

    1.计算下面各题能简算的要简算。 8.5×80%+1.5÷54 =8.5×80%+1.5×45 =8.5×0.8+1.5×0.8 =0.8×(8.5×1.5) =0.8×10 =8 19÷[56×(310+920)] =19÷[56×(620+920)] =19÷[56×34] =19÷58 =19×85 =845 3.5×45+5.5×80%+0.8 =3.5×0.8+5.5×0.8+0.5 =0.8×(3.5+5.5+1) =0.8×(9+1) =0.8×10 =8 45﹣23+25×50% =45﹣23+25×22 =45﹣23+15 =45+15﹣23 =1﹣23 =13 2.计算下面各题,能简算的要简算。 6-258-138 =6-(258+138) =6-4 =2 0.25×32×12.5% =(0.25×4)×(8×0.125) =1×1 =1 67×8×12.5% =67×(8×12.5%) =67×1 =67 99×75%+0.2×7.5-34 =(99+2-1)×0.75 =100×0.75 =75

六上数学期末【分数百分数】混合运算