3.8×99+3.8 2.8+4.36+5.64 [×(-)]÷
①125%×16×25% ② ③
60.8-6.25-3.75 53.8-3.8×0.7
0.125×16.9×0.8 7.54×0.29-0.29×6.54
0.54×7.8+5.4×0.22 7.28-(1.28+0.25)
×11+×7 (+×)÷50% 0.25×4.5×40%
12.8+7.2×0.5 10.67+1.68+4.33
5.24×7.5+5.24×2.5 1.25×4.9×80
×(+)÷ 37×60%+×37+37 ÷[(+)×]