第4单元 观察物体-【练到位·口算一练通】2024-2025学年四年级数学下册（北师大版）

1.直接写出得数。 1.5×8= 1.2×0.5= 4.9×0.2= 7.5+8.6= 8.9-6.2= 8.4×0.1= 2.5×0.3= 8-4.73= 7.48+0.6= 2.用竖式计算。 3.06×15= 4.7×1.02= 用时：分秒 第4单元观察物体 听算音频 练习一 看一看 1.29+8= 2.5×40= 3.7×0.2= 0.2+4.8= 4.5-3.7= 10×0.1= 0.3×1.5= 1.5×0.4= 80×12.5= 2.2×0.4= 1.2×0.3= 1.9×0.04= 3.1×0.5= 6.2×0.5= 1.29×100= 0.45×0.4= 2.58+1.42= 4.2×0.3= 4.83+15.7= 6.75×4.8= 18-2.73= 8.59+6.7= 错题： 道 37 综合检测评价：☆☆☆☆☆ 4年级下BS ☒批改&错题本 练习二 我说你搭 1.直接写出得数。 1.9×2= 0.25×8= 7.6×0.8= 3×4.5= 100×0.7= 3.1×0.5= 0.08×0.9= 5.23×100= 4.5+3.6= 7-3.8= 3.8×0.4= 3.3×0.8= 1.5×0.3= 2.9-1.72= 3.72-2.7= 0.12×0.4= 3.76-0.19= 0.12×0.8= 2.9-1.8= 2.4×0.3= 4.72×2= 7.5+2.5= 0.08×5= 2.5×4= 3.5+4.8= 6-3.72= 0.2×0.5= 2.用竖式计算。 45.36-18.73= 15.8×2.4= 7.8×1.09= 6.75+14.08= 4.6×7.8= 3.06×2.8= 用时：分秒错题：道 38 综合检测评价：☆☆☆☆☆ 1.直接写出得数。 7×0.09= 7-3.62= 0×3.74= 7.8+7.2= 0.9+4.1= 2.1×0.3= 8.7÷100= 5×3.02= 0.15×8= 2.用竖式计算。 3.67+15.8= 2.78×2.3= 用时：分秒 第4单元观察物体 听算音频 练习三 搭一搭 5×1.6= 4+2.75= 2.7×0.2= 8-6.25= 4.58×100= 1.2×0.4= 5.6-4.4= 4.5-3.2= 4.4×0.01= 4.9-3.6= 6.1×0.7= 100×6.5= 2.4×5= 0.9×0.6= 7.6-3.8= 1.3×0.03= 0.12×0.5= 1.25×0.8= 17.8-8.95= 7.35×2.6= 9.78×3.6= 15.08-4.89= 错题： 道 39 综合检测评价：☆☆☆☆☆ 4年级下BS 《(批改&错题本 1.直接写出得数。 0.22×4= 1.02×100= 0.2×0.4= 0.9-0.52 2.5×1.2= 1.25×0.4= 3.5×0.01= 4.8+5.2= 1.2×0.5= 2.用竖式计算。 14.8+25.78= 8.27×0.35= 用时：二分秒错题 练习四 练习课 0.15×8= 6.2+1.7= 2.5×0.4= 8.2-1.8= 3.64-3.54= 0.5+1.32= 4.2×0.3= 1.4×0.7= 3.1×0.3= 2.5×0.4= 1-0.75= 2.4×600= 6-0.025= 0.7×0.11= 8.42×0.3= 0.06×0.9= 2.5×0.4= 8.4×0.5= 36.4-25.98= 4.35×1.6= 8.26×1.7= 45.32+18.69= 道 40 综合检测评价：☆☆☆☆☆ 第4 1.直接写出得数。 1.5×4= 8×2.5= 9-4.8= 1.4×0.5= 12.3+0.7= 1.5-0.25= 2.5+0.9= 12-0.8= 0.87-0.49= 2.用竖式计算。 12.83+8.76= 3.12×1.8= 用时：分秒错题： 第4单元观察物体 听算音频 单元计算达标检测 9.8-4.8= 0.25×16= 2.5+3.2= 0.2×0.5= 5.1×0.3= 3.2+1.84= 2.5×0.8= 2.5+0.25= 0.12×0.3= 0.06×15= 0.35×0.5= 0.36×0.2= 0.54+8.2= 0.25×0.4= 0.25+0.75= 2.4×0.2= 1.4×0.2= 5.6×0.3= 22-18.73= 4.08×2.5= 5.98+27.49= 63.7-48.59= 道 41 综合检测评价：☆☆☆☆☆4年级下BS参考答案 6.10.40.2 97.80.33 0.08274.8 2800.565.76 620.40.3 750.90.01 3.11.080.29 8.31.280.35 9.81.44 1 2.8.22623.16 12.32 19.613.4550.8976 43.85 22.420.817 3.18.0232.1815.81 9 5.4310.64 第4单元 观察物体 练习一 看一看 1.129.29100 0.60.745 0.980.81 16.10.450.6 2.7 10000.88 0.840.360.076 0.751.553.1 3.271290.18 8.0841.26 2.45.920.5332.4 4.79415.2715.29 练习二我说你搭 1.3.826.08 13.5701.55 0.0725238.13.21.522.64 0.451.181.02 0.0483.570.096 1.10.729.44 100.410 8.32.280.1 2.26.6337.928.502 20.8335.888.568 练习三搭一搭 1.0.6386.753.380.541.75 04580.48 151.21.3 50.0441.3 0.634.27650 0.087120.54 15.13.80.039 1.20.061 2.19.478.85 19.11 6.39435.208 10.19 练习四练习课 1.0.881.27.9 10216.4 0.080.11.820.381.260.98 30.931 0.50.251440 0.0355.9750.077102.5260.054 0.614.2 2.40.5810.426.96 2.894514.04264.01 第4单元计算达标检测 1.654205.70.1 4.21.535.04 0.722.75 130.0360.9 1.250.1750.0723.48.740.1 11.210.480.380.281.68 2.21.593.2710.25.61633.4715.11 第5单元认识方程 练习一字母表示数 1.8.11.080.480.362.43.85 3.91.61.081.891.361.8 0.1526.63.67.50.45 100.390.271023.73 16.50.759.5 2.20.288.624.0327.17611.73612.06 练习二等量关系 1.5xx20x4.7a7t4xb3.8x20d 0.8b4.2x0.4ba2.2b1.3d 2.2x6x10x5.4x4a9x 4.1b2.5x7b12.1x4.5t4.5x 2.10.8619.7762.111.9723.497.04 练习三方程 1.3.31.7215.27.410 410.56111.816 3.90.09937119.637.7 17.61.980.080.8353050 0.84312 2.22.887.9754.6119.45620.646.096 练习四解方程（一）(1) 1.8.4x8a11b54x0.9a0.3m 0.8x10.6a2.2x13.2x7.5x5.8x 2x2.6x2b10a7b2x 2.5x3.8x8x0.7x26x10a 5.6b0.1m2.2x 2.x=40x=11x=109 x=163x=1.5x=99.7 练习五解方程（一）(2) 1.113.6100.0247.7267 6.312.90.310.40.918.9 1.90.80.1230.19.910.063 9.820.0889.111.198.4 4.050.362.16 2.x=1.8x=1.6x=17.5 x=1.8x=1.8x=7.4