5.26×10.526 7.357.35÷0.1
5.8×0.015.8÷0.01 72×272÷0.5
10﹣8.7= 5.6÷1.4= 2.07÷0.01= 2.9÷2.9×9.2=
0.12= 0.63÷7= 100﹣0.19= 2.81﹣1.7﹣0.3=