第3单元 角的度量-【优佳好】2023-2024学年四年级上册数学口算计算能力提升（人教版）

单元 3 　 第 1 课时　 线段、直线、射线 4 年级 上 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　720 - 480 = 560 ÷ 4 = 95 ÷ 5 = 25 × 80 = 3 × 571 = 410 + 320 = 4. 4 - 2. 5 = 440 × 3 = 20 × 40 = 280 × 3 = 180 ÷ 4 = 408 × 7 = 200 ÷ 5 = 363 ÷ 3 = 490 ÷ 7 = 350 × 3 = 307 × 3 = 460 × 4 = 650 ÷ 5 = 80 × 60 = 15 × 4 = 0 × 666 = 310 ÷ 5 = 105 × 6 = 470 + 560 = 52 × 30 = 32 × 40 = 4. 8 + 2. 5 = 60 × 12 = 9 - 3. 6 = 52 × 4 = 304 × 6 = 310 × 6 = 8. 3 + 1. 7 = 128 ÷ 4 = 102 ÷ 3 = 180 ÷ 3 = 16 × 50 = 45 × 20 = 205 ÷ 5 = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　720 ÷ 6 = 59 × 27 = 783 ÷ 7 = 23 × 27 + 179 (470 - 36) ÷ 7 236 ÷ 4 × 50 12 单元 3 　 第 2 课时　 认识角及角的度量 4 年级 上 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　130 × 3 = 160 × 4 = 240 ÷ 8 = 408 ÷ 2 = 505 ÷ 5 = 780 - 640 = 65 + 14 = 203 × 5 = 35 × 20 = 512 × 2 = 157 × 5 = 220 ÷ 4 = 240 - 170 = 992 ÷ 8 = 256 ÷ 4 = 308 × 7 = 143 × 5 = 420 ÷ 6 = 37 × 20 = 28 × 30 = 156 + 214 = 140 × 7 = 250 ÷ 5 = 64 ÷ 4 = 306 × 7 = 35 × 4 = 210 ÷ 3 = 200 × 6 = 80 × 30 = 155 × 2 = 211 × 4 = 380 - 240 = 0. 3 + 2. 4 = 62 × 3 = 45 × 3 = 240 ÷ 4 = 10 - 8. 3 = 8. 3 - 2. 7 = 7. 4 - 4. 8 = 18 × 50 = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　82 × 15 = 63 × 25 = 745 ÷ 9 = 738 ÷ (3 × 3) (92 - 44) × 40 138 × 4 ÷ 8 22 单元 3 　 第 3 课时　 角的分类及画角 4 年级 上 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　57 × 2 = 46 × 3 = 531 ÷ 9 = 98 + 42 = 238 + 352 = 350 - 140 = 105 ÷ 3 = 308 × 5 = 36 × 3 = 273 - 135 = 400 ÷ 8 = 150 ÷ 5 = 420 - 130 = 33 × 3 = 284 ÷ 4 = 160 × 6 = 125 × 4 = 282 ÷ 6 = 350 × 5 = 189 ÷ 9 = 682 - 531 = 530 × 2 = 6 × 307 = 150 ÷ 2 = 7. 6 - 3. 8 = 360 ÷ 6 = 232 × 4 = 103 × 6 = 250 ÷ 5 = 35 × 4 = 79 × 5 = 251 - 141 = 270 + 850 = 18 × 5 = 630 ÷ 9 = 750 ÷ 5 = 490 ÷ 7 = 43 × 30 = 18 × 40 = 480 ÷ 8 = 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　37 × 26 = 487 ÷ 8 = 255 ÷ 5 = 53 + 170 × 2 (518 + 217) ÷ 5 624 ÷ 6 + 40 32 单元 3 　 第 4 课时　 练习课 4 年级 上 R 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　57 × 20 = 69 × 2 = 100 × 10 = 45 × 20 = 360 × 30 =