第8周（第50-56天）-2023年四年级数学暑假专项之口算题（人教版，4升5）

四年级·口算题 51 第50天小数的加法和减法(5) 用时： 分 秒 1.4+0.46= 3.2-0.8-1= 4.8+4.2+10.3= 1.74+0.6= 5.4-0.9+1.6= 6.3+6.12+2.5= 2.03+3.1= 1.2+2.5+7.5= 1.7+0.43+3.3= 30.9-20.9= 2.9-0.6+0.9= 0.7-0.37-0.02= 1.41+1.59= 6.3+3.7-5= 1-0.09-0.25= 7.49-0.25= 7.63+4.76+2.3= 15.55-10.68-1.55= 4.8+1.2= 3.2+2.9+0.8+9.1= 8.2-7.1+4.2= 1-0.5= 4.5-1.5-0.3= 6.32-0.45+1.4= 8.9+4= 7.8-(2.8+2.2)= 2.86+6.14-3.8= 16.9+4.11= 1.3+4.9+7.7= 79.8-12.4-20.8= 11.78+8.8= 7.1-3.4-2.94= 9.83-3.68+2.4= 12.96-2.54= 33.63-8.65+12.37= 3.27-1.98+1.73= 3.26+0.7= 23.9+6.12+11.88= 4.4+1.5-2.24= 5.84-5.52= 7.8-5.4-1.2= 3.51-2.51+7.74= 9.9+3.3= 22.57+8.1+13.43= 26.7-17.4-2.4= 7.88-1.22= 3.6+2.7-1.6= 7.62+5.39-9.86= 5.34+1.4= 4.2+5.6+5= 1.56+7.14-5.46= 8.7-8.4= 7.2+2.7+1= 7.9-3.7+2.3= 6.66+3.5= 42.3-1.5-20.1= 6.8-3.4+6.5= 第 7.96-4.8= 1.4-1-0.07= 0.91+0.09-0.12= 5.1-0.11= 19.78+5.73+24.22= 7.6+0.8-5.6= 错 记 52 暑假专项 第51 小数乘法（1) 用时： 分 秒 2.7×8= 4.4×0.07= 0.6×7= 4.7×0.2= 0.12×3= 20.5×0.06= 21×0.9= 6.9×0.2= 1.11×8= 0.3×0.6= 30×1.5= 6.4×0.2= 4.1×9= 0.5×0.8= 6×0.18= 0.8×0.2= 0.2×4= 1.6×0.5= 0.75×4= 2.7×0.5= 10×0.5= 4.9×0.2= 3.5×0.3= 2.3×0.8= 1.6×2= 1.5×0.6= 6.3×4= 0.2×0.6= 2.2×3= 1.03×0.7= 7.8×2= 2.2×0.6= 1.3×3= 2.3×0.03= 3.4×0.3= 8.1×0.8= 0.9×8= 4.5×0.6= 6.4×0.9= 3.6×0.7= 6.2×4= 0.06×0.6= 0.5×2.3= 5.4×0.5= 0.12×20= 0.9×2.5= 5.7×0.4= 0.9×7= 4.6×5= 0.7×0.45= 12.5×0.4= 7.2×0.5= 73×0.4= 8.5×0.1= 8.2×0.4= 6.6×2= 5×1.05= 2.8×5= 4.3×0.7= 3.1×4= 25×0.8= 4.8×0.8= 3.1×0.3= 2.3×0.7= 7.5×20= 0.5×0.7= 5.2×0.5= 5.1×0.5= 7.8×4= 5.55×0.1= 9.3×0.3= 7.3×0.4= 第 2.8×50= 8.8×0.2= 0.3×0.9= 7.7×2= 周 1.3×2= 8.5×0.6= 5.2×0.3= 2.8×2= 0.1×70= 4.1×0.6= 8.6×0.2= 7.6×2= 错 记 四年级·口算题 53 第52天小数乘法《2) 用时： 分 秒 1.5×0.4= 9.2×0.2= 3.1×5= 3.9×0.1= 10.3×0.3= 1.3×0.4= 22.4×0.2= 0.18×300= 2.7×0.7= 4.2×0.4= 0.72×4= 1.25×4= 0.5×3.3= 1.3×0.3= 1.8×0.4= 10.85×5= 3.3×0.7= 0.24×0.3= 4.3×0.3= 5.15×0.4= 0.125×0.8= 1.3×0.06= 0.51×0.4= 0.2×0.82= 0.2×7.6= 0.76×0.07= 6.3×3= 0.17×5= 4.6×0.4= 3.4×0.6= 3.5×0.5= 4×0.08= 6.2×0.8= 0.23×2= 0.75×0.4= 0.8×6.9= 5.9×0.6= 1.08×6= 4.3×0.6= 0.16×8= 3.75×0