①
②
③
④
2.69×0.962.69 0.04×1.070.04 1.57×0.831.57
14.7×0.914.7×1.09 14.7×0.914.7×0.09 14.7×0.9147×0.09
1.03+2.7= 4×2.5= 7÷0.1= 0.8÷0.01= 4.4×10=
3.7-2.63= 5.4÷6= 0.5×3= 0.33×20= 99.9×0÷9.9=
8.84÷1.7
1.55÷3.8(保留一位小数)
25÷1.5(商用循环小数表示)