25.4×5125 4.05×1045 6.4×7.97.9×6.4 2.8÷50.14
48×52=24.96
336÷28=0.12
0.89﹣0.25= 1﹣0.98= 8.8﹣6.7= 5×400=
3.04+7.6= 1.23÷3= 0.4×0.06= 0÷1.89=