简便计算 26×9.9 79×3.2+21×3.2 1.25×1.6 47.5×99+47.5急急_百度...

发布网友发布时间：2024-10-08 06:31

共0个回答

简便计算 26×9.9 79×3.2+21×3.2 1.25×1.6 47.5×99+47.5急急...

解：26×9.9=26*（10-0.1）=260-2.6=257.4 79×3.2+21×3.2=3.2*（79+21）=320 1.25×1.6=1.25*4*0.4=5*0.4=2 47.5×99+47.5=47.5*（99+1）=4750 1.25×25×8×0.4=1.25*8*25*0.4=10*10=100

8.08×1.25简便计算?

小数加法简便运算(交换相加)12.43+(2.57+10.79)=25.79 3.04+(0.59+3.96)=7.594.36+(3.64+5.85)=13.85 1.82+(2.18+0.74)=4.740.53+4.19+18.47=23.19 11.57+(2.58+1.43)=15.5812.38+(10.53+3.62)=26.53 3.21+5.04+16.79=25.049.96+1.96+0.04=11.96 3.73+0.28+11.72=15.731.08+5.92+8.92=15.92 8.8+1.08+12.92=2...

72×26+36x48简便计算 101×26-26简便计算 26×24用运算律简便计算 459×26简便计算 26×16简便计算 103×26简便计算 26×301怎么简便计算 101×268的简便计算 25×26的简便运算