31×0.8×0.5
14.5×102
78.3×11-78.3
56.8×0.5+0.6
1.3×2.5+0.7×2.5
12.5×(0.78×0.8)
36.98×2.6+369.8×0.74
[78-(9.41+28.99)]-0.18
26×1.2-8.2 6.7×1.52+0.48×6.7 7.2÷0.18×0.8 12.5×4.8 3.5+9.62÷0.26 78÷0.25÷4
①0.53×2.5+
②25×0.032×12.5
③ [()×]
④6.83+17.9﹣0.83+32.1
①12.5×(8+0.8)
②+×
③+÷
④26﹣7.28﹣12.72
⑤5.8×4.1+5.9×5.8
⑥÷(+1.4×)