两道简便运算7.2x4.6+46x0.289.8x3.6+7.2x0.1

来源：学生作业帮助网 编辑：作业帮 时间：2024/11/17 10:31:08

两道简便运算7.2x4.6+46x0.289.8x3.6+7.2x0.1
两道简便运算
7.2x4.6+46x0.28
9.8x3.6+7.2x0.1

两道简便运算7.2x4.6+46x0.289.8x3.6+7.2x0.1
7.2x4.6+46x0.28
=7.2x4.6+4.6x10x0.28
=7.2x4.6+4.6x2.8
=4.6x(7.2+2.8)
=4.6x10
=46
9.8x3.6+7.2x0.1
=9.8x3.6+3.6x2x0.1
=9.8x3.6+3.6x0.2
=3.6x(9.8+0.2)
=3.6x10
=36

7.2x4.6+46x0.28
=7.2×4.6+4.6×2.8
=（7.2+2.8）×4.6
=10×4.6
=46
9.8x3.6+7.2x0.1
=9.8×3.6+3.6×0.2
=（9.8+0.2）×3.6
=10×3.6
=36

7.2x4.6+46x0.28
=7.2x4.6+4.6x2.8
=（7.2+2.8）x4.6
=46
9.8x3.6+7.2x0.1
=4.9x7.2+7.2x0.1
=（4.9+0.1）x7.2
=36

7.2×4.6+46×0.28
=7.2×4.6+4.6×2.8
=4.6×（7.2+2.8）
=4.6×10
=46
9.8×3.6+7.2×0.1
=（10-0.2）×3.6+0.72
=36-0.72+0.72
=36

两道简便运算7.2x4.6+46x0.289.8x3.6+7.2x0.1 1.25X4.8X0.25的简便运算 黄冈小状元数学5年级上第七页培优作业用简便方法计算下面各题.（1）2.9x0.45+0.29x4.2+0.029x13(2)3.84x9.6+0.96x61.6要简便运算详细写出过程 四年级简便运算方法2.5x0.6-1.8x0.5的简便运算方法 简便运算两道 (12.5x25)x4简便运算 25.25x0.64x4/0.64 怎么简便 0.125x4.8x0.25 简便计算 简易运算计算以下题目：1、2.9x0.45+0.29x4.2+0.029x132、3.84x9.6+0.96x61.6 小学简便运算,５；６；两道, 数学多项式的运算简便!2007 2008 100 3000.25 x4 -8 x0.5sorry那 是平方和次方！ (324又7分之1-810又6分之1+486.5)x4.2 简便运算 急~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (324又7分之1-810又6分之1+486.5)x4.2简便运算, 简便运算ppt1x2+2x4+3x9.100x200_____________________________2x3+4x6+6x9.200x300 9/2x4/5x3/8简便运算 两道简便运算题12.5x0.25x327/9÷11/5+5/11x2/9 五年级简便运算55.5+72x0.2-14.4= 12.5x0.25x3.2如何简便运算