题目
脱式计算,能简算的要简算.
①50﹣4.96﹣26.38
②8.2+0.87﹣3.5
③25.6﹣2.8﹣14.6﹣8.2
④13.94﹣5.2﹣4.8
⑤4.36+1.73+0.64+0.27
⑥76.58+(6.75﹣6.48)
答案:①50﹣4.96﹣26.38 =50﹣(4.96+26.38) =50﹣31.34 =18.66 ②8.2+0.87﹣3.5 =9.07﹣3.5 =5.57 ③25.6﹣2.8﹣14.6﹣8.2 =(25.6﹣14.6)﹣(2.8+8.2) =11﹣11 =0 ④13.94﹣5.2﹣4.8 =13.94﹣(5.2+4.8) =13.94﹣10 =3.94 ⑤4.36+1.73+0.64+0.27 =(4.36+0.64)+(1.73+0.27) =5+2 =7 ⑥76.58+(6.75﹣6.48) =76.58+0.27 =76.85