第1单元 四则运算-【优佳好】2023-2024学年四年级下册数学口算计算能力提升（人教版）

单元 1 　 第1课时　 加、减法的意义和各部分间的关系(教材 P2 ~3) 4 年级 下 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　80 - 36 = 18 + 36 = 72 - 25 = 81 - 37 = 35 + 26 = 42 + 18 = 27 + 56 = 30 - 12 = 84 - 75 = 100 - 73 = 60 + 35 = 27 + 19 = 66 + 34 = 150 - 70 = 320 + 180 = 38 + 52 = 42 - 34 = 95 + 18 = 24 + 30 = 75 - 36 = 100 - 83 = 66 - 19 = 80 - 38 = 22 + 19 = 450 + 170 = 230 - 160 = 180 + 330 = 260 + 100 = 570 - 400 = 400 - 312 = 129 - 29 = 346 - 146 = 75 - 28 = 150 + 280 = 680 - 140 = 730 + 170 = 63 - 45 = 380 + 190 = 210 - 70 = 547 - 200 = 524 + 326 = 　 　 　 　 　 　 　 400 - 178 = 　 　 　 　 　 　 　 523 - 148 = 验算: 验算: 验算: 817 - 258 = 137 + 458 = 296 + 548 = 验算: 验算: 验算: 1 单元 1 　 第 2 课时　 乘、除法的意义和各部分间的关系(教材 P5) 4 年级 下 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　15 × 30 = 25 × 4 = 1200 ÷ 60 = 69 ÷ 3 = 42 × 40 = 720 ÷ 80 = 480 ÷ 40 = 60 × 12 = 30 × 22 = 480 ÷ 12 = 66 ÷ 11 = 88 ÷ 4 = 960 ÷ 30 = 320 ÷ 40 = 15 × 20 = 255 ÷ 5 = 0 ÷ 58 = 40 × 50 = 560 ÷ 8 = 450 × 2 = 450 ÷ 50 = 5 × 90 = 26 × 20 = 12 × 10 = 0 × 136 = 80 × 70 = 280 ÷ 7 = 96 ÷ 6 = 484 ÷ 4 = 720 ÷ 60 = 34 × 40 = 180 × 2 = 56 × 34 = 　 　 　 　 　 　 　 　 105 × 92 = 　 　 　 　 　 　 　 　 298 ÷ 18 = 验算: 验算: 验算: 850 ÷ 50 = 348 ÷ 29 = 435 × 30 = 验算: 验算: 验算: 2 单元 1 　 第 3 课时　 有关 0 的计算(教材 P6) 4 年级 下 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　0 + 147 = 45 - 0 = 0 × 127 = 0 ÷ 29 = 108 × 3 = 12 × 40 = 60 × 80 = 6300 ÷ 70 = 80 ÷ 40 = 112 × 6 = 390 ÷ 13 = 400 × 0 = 0 ÷ 304 = 357 ÷ 7 = 48 + 12 = 630 - 120 = 903 ÷ 3 = 600 × 80 = 502 × 2 = 280 ÷ 4 = 730 - 140 = 640 ÷ 8 = 720 ÷ 6 = 50 × 14 = 480 - 270 = 900 - 130 = 6000 ÷ 30 = 204 × 50 = 60 ÷ 12 = 780 ÷ 30 = 80 ÷ 5 = 450 × 20 = 1001 - 496 = 　 　 　 　 　 　 　 　 630 ÷ 54 = 　 　 　 　 　 　 　 　 150 × 38 = 9100 ÷ 1300 = 123 × 60 = 956 ÷ 16 = 3 单元 1 　 第 4 课时　 练习课(教材 P7) 4 年级 下 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　19 + 41 = 27 + 69 = 15 × 40 = 100 ÷ 4 = 800 ÷ 40 = 50 ÷ 25 = 5 × 180 = 81 - 27 = 73 + 48 = 56 - 27 = 19 + 88 = 93 ÷ 3 = 220 ÷ 11 = 150 - 90 = 630 ÷ 7 = 20 × 80 = 75 ÷ 5 = 3