99×4.9再加上个0.49简便运算怎么算?
99×4.9+0.49 =99×4.9+4.9-4.9+0.49 =4.9×(99+1)-4.9+0.49 =4.9×100-4.9+0.49 =490+0.49-4.9 =490.49-4.9 =485.59 所以,可以通过上面的简便计算过程,得到答案是485.59。
4.9*4.9+0.49怎样做最简便
=(49+1)×0.49 =50×0.49 =24.5
4.9x9.9+0.49简便方法?
4.9x9.9+0.49 =4.9x(9.9+0.1)=4.9x10 =49 以上就是简便方法。
4.9*9.9+0.49简便
4.9*9.9+0.49 =4.9×9.9+4.9×0.1 =4.9×(9.9+0.1)=4.9×10 =49
4.9乘以9.9加0.49怎样简便计算
4.9乘以9.9加0.49 =4.9x9.9+4.9x0.1 =4.9x(9.9+0.1)=4.9x10 =49 不懂可追问,有帮助请采纳,谢谢!
简便计算4.9×9.9+49?
4.9*9.9+49 =49*0.99+49 =49*(0.99+1)=49*1.99 =49*(2-0.01)=49*2-49*0.01 =98-0.49 =97.51
用简便方法计算4.9x9.9 0.049
49 解:4.9×9.9+0.49 =4.9×9.9+4.9×0.1 =4.9×(9.9+0.1)=4.9×10.0 =49
4.9×4.9+0.49×51用简便计算?
简便计算,先凑出相同项4.9,然后在利用乘法分配律合并同类项,详细计算过程如下:4.9 x4.9 +0.49 x51 =4.9x4.9+4.9x5.1 =4.9x( 4.9+5.1)=4.9×10 =49
0.49x99+0.49的简便运算什么做?
0.49x99+0.49 =0.49x(99+1)=0.49x100 =49
4.9+0.49×89+0.49用简便算法怎样算
4.9+0.49×89+0.49用简便算法怎样算 解:根据提取公因式的简便方法,原式=4.9+4.9x8.9+4.9x0.1 =4.9x(1+8.9+0.1)=4.9x10 =49