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9.9x26简便计算

解9.9x26=(10-0.1)x26=260-2.6=257.4

展开全部9.9*26= (10-0.1)*26= 10*26 -0.1*26= 260 -2.6= 256.4

9.9*26= (10-0.1)*26= 10*26 -0.1*26= 260 -2.6= 256.4

9.9 X 26= 26 X ( 10 - 0.1 )= 260 - 2.6= 257.4

9.9x2.6=(10-0.1)x2.6=10x2.6-0.1x2.6=26-0.26=25.74希望能帮到你!

5*(27*4)=5*4*27=20*27=540

9.9X26=(10-0.1)X26=10X26-0.1X26=260-2.6=23.4

解:9.8x2.6=10x2.6-0.2x2.6=26-0.52=25.48

任务占坑

1、0.25*1.25*32 2、104*253、0.56+2.73+1.44+5.274、6*12+6*85、2.08+6.23+2.126、15.7-9.5-0.57、25/8*4/58、4.02+5.4+0.98 9、13*9910、2.46+3.2-2.46+3.211、(5/7+8/21)*4212、5.17-1.8-3.2 13、13.75-(3.75+6.48)14、7.85+2.34-0.

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