四年级小数简便运算6.28+5.06+4.0432.8+3.02+17.26.02+4.3+3.985.85+1.89+2.153.8+14.6+6.224.8+14.6+15.4100-36.4-43.651.27-8.66-1.3415-1.2-0.875.8-3.25-6.751.83+3.79+0.173.2-4.3+1.882-18.6-14.45.85-1.75-0.2519-9.05-0.95四年级小数简便运算3.73+5.27+1.275.8-3.25-6.75100-36.4-43.632.8+3.02+17.27.45+8.29+2.5513.78-（0.78+0.5）8.38+9.43+6.625.86-1.77+2.1417.34-（9.8+6.34）0.93+5.45+4.5532-6.34-3.662.5+3.25+0.753.8+6.5+6.2100-5.6-4.46.76+2.77+3.23四年级小数简便运算52.89-（13.54+6.89）53.14+（16.57+6.86）22.6-（3.9+
