2018—2019学年四年级下册数学口算竞赛试题 （每道1分，共100分） 姓名：_________ 1.5+8.5= 5.4+8.2= 3.6+1.8= 3.3+7.9= 2.4+6.8= 8.1+7.9= 14.3+1.4= 9.2+1.3= 1.6+3.9= 1.8+7.4= 15.4+3.6= 0.4+1.6= 2.8+3.6= 3.6+4.7= 6.5+1.9= 0.6+0.7= 1.5+3.8= 6.2+9.9= 11.5+11.4= 0.8+3.4= 0.29+3.4= 6.23+4.23= 4.37+0.91= 0.28+0.91= 0.58+0.15= 4.76+3.20= 6.3+9.04= 5.20+0.25= 5.27+0.91= 0.93+0.47= 8.7-3.5= 3.2-2.1= 8-3.2= 10.2-6.2= 6-0.4= 8.3-7= 4.7-4.3= 8.2-5.2= 2.6-0.8= 4.7-2.5= 8.4-0.6= 5.7-3.7= 1-0.9= 3.5-1.3= 3.5-3.4= 9.7-5.4= 4.3-1.4= 7.1-0.2= 8.2-6.8= 6.9-2.5= 8.63-5.43= 7.12-3.21= 7.41-4.12= 8.42-5.09= 5.32-1.01= 5.21-0.21= 6.30-0.02= 0.34-0.01= 8.43-4.21= 6.43-2.01= 10.3×10= 1.3×10 = 1000×5.4 = 5.3×100 = 1000×6.73= 10× 8.1 = 100×7.4 = 8.87× 100= 8.98 × 100= 8.8 × 10 = 1000×5.2 = 100×2.05 = 4.9×1000= 10×0.22 = 1000×2.2 = 10×2.3 = 100×2.6 = 100×2.8 = 1.67×1000 = 7.4×10 = 78.1÷100 = 86.4÷10 = 7.4÷10 = 43.5÷100= 2.2÷10 = 60.4÷10 = 414÷100= 922÷100 = 5.2÷10 = 2.5÷100= 7.2÷10= 53.5÷10 = 7.4÷100 = 139÷100= 80.5÷100 = 8.2÷10 = 43.6÷100 = 835÷100= 83.8÷10= 7.8÷10 = 附加题：（每道1分，共20分） 79+89+121= 25×62×4= 125×7×8= 70×12×5= 32×25= 44×25= 65×5+35×5= 12×70+38×70= 5×21+79×5= 45×6+35×6= 67×5-37×5= 120×90-110×90= 39×8-6×39= 648+203== 102×45= 63×2= 32×78-32×68= 25×（8+4）= 101-48= 102×45= ×15 48× 本文来源：https://www.wddqw.com/doc/c3221960b8f3f90f76c66137ee06eff9aef84986.html