题目
计算下列各题(能简算的要简算)
①1.46+3.8+0.54+6.2
②15×[102÷(52-35)]
③25×23×4
④386-78-22
⑤25×73+25×27
答案:解:①1.46+3.8+0.54+6.2 =1.46+0.54+(3.8+6.2) =2+10 =12 ②15×[102÷(52-35)] =15×[102÷17] =15×6 =90 ③25×23×4 =25×4×23 =100×23 =2300 ④386-78-22 =386-(78+22) =386-100 =286 ⑤25×73+25×27 =25×(73+27) =25×100 =2500