期末复习-【王朝霞口算小达人】2024-2025学年四年级下册数学(北师大版)

专项练习 7.8 8.2 9.17 5x=1.47x=44.4x=14 小数加减乘法 3.6 1 44 x=27 x=14.77 11.72.3 6.94.4 24.56 7.9 12.1 x=3 x=0.86 10.759.6 4.74.23 2 2 y=11 x=18 10015.72176.18 3 6(1)× 232.7 3270 3.27 x-0.9=3.8 参 6 0.6 60 ● 解：x-0.9+0.9=3.8+0.9 4494.9 140 28 500 5 0.5 x=4.7 考答 22.74 110 5.28 397.2 9.72 0.972 80.3 20.5 29.05 (2)× 9.72 9.72 0.0972 19 5.07 42.3 6x-90=102 4< < > 13.17 568 5.344 解：6x-90+90=102+90 < > > 5(1)× 6x=192 54.17 41.7 41.25 101×0.85 x=32 0.41251.71 3 =(100+1)×0.85 30 29.416.41 =100×0.85+1×0.85 期末复习 =85+0.85 13.770.1 9.93120 0.641 641 656.6 6 0.645.480.056 617.95 17.053.354 =85.85 (2)X 2.7 3.510.28 3.2 14.5841.24 7.8+1.2-7.8+1.2 2> > 294 11.8674.16 =(7.8-7.8)+1.2+1.2 7(1)× 2.97 +20.3 =0+2.4 23.27 =2.4 3(竖排) (2)× 23.8 解方程 100 ÷ 100 -1.62 1(1)/ (2)× (3)× 22.18 ÷ 100 × 1000 (4) (3)× 2.55 X 10 ÷ 1000 2(1)< > (2)> ×1.6 429.78 0.728 4.42 1530 (3)= 19.98 40.05 42.504 255 3 4.080 514.56 31.7 42 (4)× 4.6 44.5 30.465136.5 ×0.35 62=21.5x=6 x=20 230 4(1)z=2.72☑ 138 (2)x=11J x=13 x=3 zx=28 1.610 7(1)68+2x=308 小数加减乘混合运算 (3)x=112√ x=120 (含简便运算) (4)z=12☑ (2)16+x=52÷2 13.43 2.1 10.3 (5)z=12☑ x=10 口算小达人四年级下册BS 123null