第十单元 数的世界-【优佳好】2023-2024学年三年级下册数学口算计算能力提升（苏教版）

单元十 　 第 1 课时　 数的世界(1) 3 年级 下 S 40 + 120 = 320 - 180 = 210 + 90 = 113 × 4 = 34 × 20 = 508 × 6 = 87 × 4 = 32 × 30 = 6 7 - 5 7 = 5 6 - 1 6 = 75 + 25 = 43 - 28 = 8 - 3. 7 = 53 + 47 = 452 + 340 = 1. 8 + 4. 6 = 137 + 240 = 3. 5 + 2. 4 = 3 8 + 1 8 = 1 - 25 = 630 - 180 = 720 - 450 = 800 - 540 = 3. 2 + 1. 4 = 427 - 127 = 7. 6 - 2. 3 = 620 + 238 = 308 × 7 = 8 9 - 2 9 = 7 9 - 2 9 = 45 × 30 = 54 × 40 = 58 × 4 = 763 × 2 = 25 × 80 = 225 × 3 = 80 × 60 = 5 × 136 = 2 6 + 1 6 = 2 5 + 2 5 = 4. 8 + 1. 3 = 5. 9 - 2. 6 = 75 × 24 = 127 × 3 + 225 735 - (112 + 227) 53 × (96 ÷ 4) 56 单元十 　 第 2 课时　 数的世界(2) 3 年级 下 S 47 + 53 = 130 + 270 = 6. 4 - 2. 4 = 227 + 130 = 51 × 30 = 420 - 180 = 375 - 300 = 79 × 52≈ 5 7 - 3 7 = 5 9 + 2 9 = 107 × 3 = 42 × 40 = 27 × 30 = 301 + 630 = 6. 7 + 8. 2 = 51 × 50 = 700 + 246 = 198 + 308≈ 4 5 - 1 5 = 4 8 - 1 8 = 310 - 208 = 540 + 260 = 3. 7 - 2. 1 = 185 + 145 = 14 × 50 = 8. 5 - 2. 7 = 408 + 122 = 52 × 38≈ 3 4 - 2 4 = 5 7 + 2 7 = 326 + 174 = 483 + 126 = 720 ÷ 8 = 490 + 260 = 3. 8 + 1. 2 = 740 - 180 = 180 × 3 = 495 - 223≈ 5 6 - 4 6 = 3 8 + 2 8 = 7. 8 + 2. 5 = 8. 1 - 4. 7 = 84 × 27 = (415 + 216) × 3 45 × 30 - 800 63 ÷ 7 × 15 66 单元十 　 第 3 课时　 数的世界(3) 3 年级 下 S 80 × 40 = 240 + 170 = 30 × 26 = 24 × 30 = 414 × 4 = 25 × 30 = 143 + 157 = 346 + 229≈ 4 6 - 2 6 = 3 8 + 2 8 = 3. 6 - 1. 8 = 2. 3 + 1. 7 = 110 + 370 = 470 + 180 = 32 × 40 = 4. 7 + 1. 6 = 513 × 3 = 78 × 22≈ 4 7 + 2 7 = 1 4 + 3 4 = 2. 2 + 4. 4 = 71 × 30 = 126 × 2 = 27 × 30 = 4. 5 - 2. 1 = 30 × 25 = 280 × 3 = 495 - 203≈ 2 5 + 3 5 = 6 10 - 3 10 = 353 × 2 = 63 × 30 = 2. 4 + 3. 3 = 41 × 80 = 214 × 5 = 12 × 40 = 317 × 3 = 59 × 32≈ 1 - 19 = 1 5 + 3 5 = 45 × 27 = 15. 7 - 3. 9 = 63 × 18 = 45 × 52 - 1200 (274 + 136) × 5 24 × 12 + 324 76 单元十 　 第 4 课时　 数的世界(4) 3 年级 下 S 12 × 30 = 400 ÷ 2 = 2 + 0. 8 = 15 × 40 = 50 × 5 = 90 × 70 = 21 × 40 = 15 × 50 = 4. 8 - 2. 6 = 22 × 40 = 88 ÷ 4 = 3 + 1. 7 = 7. 2 - 3. 6 = 205 × 4 = 45 × 20 = 450 ÷ 3 = 868 ÷ 2 = 5. 3 + 2. 7 = 120 × 3 = 400 ÷ 8 = 9. 9 + 7. 6 = 29 × 31≈ 7. 3 + 2. 8 = 560 ÷ 7 = 3 +