题目

简便计算。56×125 12.7+0.98+3.02+5.3 270÷6÷55.6-1.71-0.29 24.52-（7.5+4.52） 35×102 答案：【答案】7000 22 93.6 12.5 3570【解析】56×125 12.7+0.98+3.02+5.3 270÷6÷5=7×（8×125） =（12.7+5.3）+（0.98+3.02） =270÷（6×5）=7×1000 = 18+4 =270÷30=7000 = 22 =95.6-1.71-0.29 24.52-（7.5+4.52） 35×102=5.6-（1.71+0.29） =24.52-4.52-7.5 =35×（100+2）=5.6-2 =20-7.5 =35×100+35×2=3.6 =12.5 =3570一Could you tell me how to behave politely in public in the UK?一Yes. ，you should keep your voice down and always queue.A. After all B. First of allC. In all D. At all