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用简便方法计算7.2 +2.8×7.2

7.2÷0.25+2.8×4 =7.2x4+2.8x4 =(7.2+2.8)x4 =10x4 =40 希望能帮到你!

7.2X + 7.2 x 2.8 =7.2X + 20.16

7.2+2.8×5-1.2 =7.2+14-1.2 =21.2-1.2 =20

7.2÷0.25+2.8x4 =7.2X4+2.8X4 =4X(7.2+2.8) =4X10 =40

7.2-4.9+2.8 =7.2+2.8-4.9 =10-4.9 =5.1

7.2+2.8乘以1.4的简便运算 7.2+2.8乘以1.4 =7.2+2.8*1.4 =7.2+3.92 =11.12

漆.二 +二.吧×漆.二 =漆.二+三*漆.二-0.二*漆.二 =四*漆.二-0.二*漆.二 =二吧.吧-一.四四 =二漆.三陆 希望能帮到你,请采纳正确答案. 你的点赞或采纳是我继续帮助其他人的动

7.2+2.8*3.6 =7.2+1.4*2*3.6 =7.2+1.4*7.2 =7.2(1+1.4) =17.28 其实这个题不用简算,也很快的 很高兴为您解答,祝你学习进步!有不明白的可以追问! 如果您认可我的回答,请点击下面的【选为满意回答】按钮,谢谢!

2.8×4.5+7.2×4.5 =4.5x(2.8+7.2) =4.5x10 =45

7.2+2.8×1.5=5.8+2.8×0.5+2.8×1.5=5.8+2.8×(0.5+1.5)=5.8+5.6=11.4 或者 7.2+2.8×1.5=7.2+0.7×4×1.5=7.2+0.7×6=7.2+4.2=11.4

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