分析:本题据四则混合运算法则计算即可:先算乘除,再算加减,有括号的要先算括号里面的.同时要认真分析式中数据,能简算的要简算.
解答:
解:①×125××8
=(×8)×(×125), =2×1, =1;②++×24 =++4, =4;
③×(-)÷ =××, =;④3÷+3÷ =×+×, =+, =;
⑤7+8.9+2+6.1 =(7+2)+(8.9+6.1), =10+15, =15;
⑥0.36×101 =0.36×100+0.36, =36+0.36, =36.36;
⑦20-(5.6+4.8)÷1.3 =20-10.4÷1.3, =20-8, =12;
⑧3.2×(2.15+1.95÷6.5) =3.2×(2.15+0.3), =3.2×2.45, =7.84;
⑨(+)÷+ =×+, =+, =; ⑩36×(+-) =36×+36×-36× =9+6-12, =3.点评:完成此类题目要细心分析数据,然后据计算法则和运算定律完成.
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