四年级下册小数简便运算.doc

四年级小数简便运算6.28+5.06+4.04 32.8+3.02+17.2 6.02+4.3+3.985.85+1.89+2.15 3.8+14.6+6.2 24.8+14.6+15.4100-36.4-43.6 51.27-8.66-1.34 15-1.2-0.875.8-3.25-6.75 1.83+3.79+0.17 3.2-4.3+1.882-18.6-14.4 5.85-1.75-0.25 19-9.05-0.95四年级小数简便运算3.73+5.27+1.2 75.8-3.25-6.75 100-36.4-43.632.8+3.02+17.2 7.45+8.29+2.55 13.78-（0.78+0.5）8.38+9.43+6.62 5.86-1.77