7.5*2.3+1.9*2.5+12.5*0.4 简便预算
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7.5*2.3+1.9*2.5+12.5*0.4简便预算7.5*2.3+1.9*2.5+12.5*0.4简便预算7.5*2.3+1.9*2.5+12.5*0.4简便预算7.5*2.3+1.9*2.5+
7.5*2.3+1.9*2.5+12.5*0.4 简便预算
7.5*2.3+1.9*2.5+12.5*0.4 简便预算
7.5*2.3+1.9*2.5+12.5*0.4 简便预算
7.5*2.3+1.9*2.5+12.5*0.4
=2.5*3*2.3+2.5*1.9+2.5*5*0.4
=2.5(6.9+1.9+2)
=2.5*10.8
=2.5*10+2.5*0.8
=25+2
=27
7.5*2.3+1.9*2.5+12.5*0.4 简便预算
7.5*2.3+1.9*2.5(简算)
7.5*2.3+1.9*2.5 用简便方法
7.5×2.3+1.9×2.5+1.25×0.4怎么简便计算?
计算7.5*2.3+2.9*2.5+12.5*0.4怎样算简便?
简便方法计算:7.5×2.7+1.9×2.5
几道简便运算!^o^~(1)1.25*17.6+36.1/0.8+2.36*12.5(《精彩假期》P18)(2)7.5*2.3+1.9*2.5(《精彩假期》P18)(3)2004/2003*2005(《精彩假期》P22)(4)276*543-267/276+543*275(《精彩假期》P22)(5)17/5
7.5*2.3+2.5*3.1怎么简算呀
7.5乘2.7加1.9乘2.5简便方法计算
解方程 7.5x2-2.5X=12.5
用方程解这道题7.5*2-2.5x=12.5
(9.1×7.5×4.6)÷(1.3×2.5×2.3)简便计算
7.5X2.3+1.9X2.5+12.5X2.5 简便计算
简便计算:7.5x2.3+1.9x2.5+12.5x0.4
两道小学数学递等式!速度!7.5×2.3+1.9×2.5+22.5×0.4(1+0.12+0.23)×(0.12+0.23+0.34)—(1+0.12+0.23+0.34)×(0.12+0.23)小学5年级没学过.我要巧算,谢谢
2.5x(1.9+1.9+1.9+1.9)=?
7.5×1.9×0.4
2.5x(1.9+1.9+1.9+1.9)的简便运算