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八点八乘一点二五用简便的,脱式计算

8.8×1.25 =1.1×(8×1.25) =1.1×10 =11 或者: 8.8×1.25 =(8+0.8)×1.25 =8×1.25+0.8×1.25 =10+1 =11

5.2x9.8 =5.2x(10-0.2) =5.2x10-5.2x0.2 =52-1.04 =50.96

5.5×9.8 =5.5×(10-0.2) =5.5×10-5.5×0.2 =55-1.1 =53.9

答;2.8-2.8x0.15 这是一道小学数学题,我们可以用【先乘除后加减】的方法来解答. 2.8-2.8x0.15 =2.8-0.42 =2.38 最后答案为2.38

0.125×3/4+1/8×8.25+12.5% =1/8×(3/4+8.25+1) =1/8×10 =1.25

0.78x(100-2) =78-1.56 =76.44

十二点三乘三点五乘零点八 =12.3x(3.5x0.8) =12.3x2.8 =34.44

28×111+999×8 =28×111+111×9×8 =28×111+111×72 =(28+82)×111 =100×111 =11100

2.12乘以零点8×5 =2.12x4 =8.48 朋友,请及时采纳正确答案,下次还可能帮到您哦,您采纳正确答案,您也可以得到财富值,谢谢。

八百除以括号二十乘8脱式计算要简便的 八百除以括号二十乘8 =800÷8÷20 =100÷20 =5

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