第1单元 小数的意义和加减法-【优佳好】2023-2024学年四年级下册数学口算计算能力提升（北师大版）

单元一 　 第 1 课时　 小数的意义(一) 4 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　245 × 20 = 179 × 30 = 210 × 86 = 460 ÷ 23 = 560 ÷ 80 = 178 ÷ 2 = 702 × 40 = 220 ÷ 11 = 45 × 20 = 500 × 30 = 100 × 45 = 510 ÷ 85 = 560 ÷ 70 = 20 × 17 = 210 × 70 = 850 ÷ 17 = 120 ÷ 20 = 430 ÷ 10 = 125 × 80 = 294 × 30 = 240 × 3 = 480 ÷ 80 = 910 ÷ 70 = 281 × 70 = 123 × 20 = 209 × 30 = 320 ÷ 80 = 210 × 20 = 108 × 5 = 409 × 60 = 150 × 11 = 187 ÷ 17 = 440 ÷ 20 = 207 × 40 = 105 × 40 = 380 ÷ 76 = 110 × 20 = 460 ÷ 20 = 630 ÷ 70 = 270 × 54 = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　549 ÷ 61 = 210 × 15 = 282 ÷ 47 = 396 ÷ (3 × 6) + 18 44 × 306 + 94 × 44 54 × [(36 - 18) ÷ 6] 1 单元一 　 第 2 课时　 小数的意义(二) 4 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　123 × 12 = 532 ÷ 76 = 180 × 40 = 25 × 200 = 324 × 32 = 720 ÷ 12 = 700 × 40 = 170 × 20 = 690 ÷ 23 = 650 ÷ 13 = 150 × 60 = 40 × 250 = 510 ÷ 17 = 390 ÷ 13 = 350 × 20 = 140 × 60 = 270 ÷ 54 = 560 ÷ 14 = 250 × 20 = 180 × 30 = 260 ÷ 13 = 320 ÷ 16 = 150 × 40 = 440 ÷ 44 = 602 × 30 = 120 ÷ 24 = 130 × 50 = 253 ÷ 11 = 184 × 30 = 340 ÷ 17 = 120 × 40 = 390 ÷ 78 = 490 ÷ 7 = 345 ÷ 23 = 150 × 30 = 124 ÷ 31 = 850 ÷ 17 = 518 × 20 = 20 × 300 = 100 ÷ 25 = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　421 × 14 = 215 × 13 = 357 ÷ 51 = 407 × (208 ÷ 4 - 50) 37 × 99 75 × 18 - 25 × 18 2 单元一 　 第 3 课时　 小数的意义(三) 4 年级 下 B 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　160 × 30 = 700 ÷ 14 = 941 × 20 = 828 ÷ 36 = 240 × 30 = 480 ÷ 24 = 447 × 30 = 357 ÷ 51 = 70 × 130 = 195 ÷ 39 = 806 × 40 = 650 ÷ 13 = 380 × 20 = 340 ÷ 17 = 234 × 50 = 196 ÷ 14 = 30 × 310 = 420 ÷ 14 = 247 × 40 = 144 ÷ 48 = 30 × 150 = 960 ÷ 16 = 143 × 70 = 680 ÷ 17 = 120 × 50 = 780 ÷ 39 = 749 × 20 = 450 ÷ 90 = 700 × 15 = 910 ÷ 13 = 101 × 40 = 280 ÷ 70 = 50 × 400 = 840 ÷ 21 = 502 × 40 = 750 ÷ 25 = 60 × 120 = 143 ÷ 13 = 184 × 50 = 108 ÷ 36 = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　560 × 30 = 360 × 80 = 215 ÷ 43 = 414 ÷ (134 - 88) × 9 44 × (20 + 5) - 238 74 × 25 × 4 3 单元一 　 第 4