三年级数学下册除法估算练习
题
快递公司问题件快递公司问题件货款处理关于圆的周长面积重点题型关于解方程组的题及答案关于南海问题
2017
估算一
653?7? 916?3? 870?4? 716?5? 180?6? 780?3? 805?2? 248?8? 246?7?
174?9? 1
160?5?
164?2?
405?7? 1
218?6?
218?4?
320?5? 97?3? 220?9? ?8?76?8? ?8? ?5? 103?3? 352?5? 153?5? 446?8? 325?4? 801?6? 602?8? 1 213?3? ?4? ?6? ?9? ?4? ?9? ?3? 296 357 148 911 155 350 220 354 251
估算二
510?6? 377?6? 192?7? 330?4? 175?5? 225?3? 415?5? 474?5? 740?8?
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375?5?
441?5?
375?9?
246?3?
432?8?
205?3?
500?6? 292?3? 212?7? 600?8? 194?8? 125?5? 521?7? 200?7? 638?8? 604?4? 468?5? 516?6? 150?4? 440?5? 2 121?4? 227?3? 260?4? 357?6? 500?8? 453?6? ?9?
870
估算三
352?5? 429?8? 524?8? 594?7? 197?3? 287?4? 220?3? 512?8? 103?3?
566?7?
519?6?
728?8?
308?7?
190?2?
804?9?
—————————————————————————————————————————————————————
444?6? 728?8? 388?4? 83?5? 427?5? 432?8? 541?9? 210?4? 370?7? 706?9?190?6? 598?8? 368?5
? 557?8?3 645?8? 520?6? 254?3? ?4? 569?6?
451?9? 473?5?
396
估算四
315?7? 245?3? 726?9? 554?8? 500?6? 298?7? 267?7? 716?9? 521?5?
167?3?
369?4?
483?8?
248?8?
592?9?
247?9?
232?4? 434?8? 498?7? 320?8? 368?5? 796?9? 460?5? 285?6? 375?8? 197?3? 408?9? 508?6? 148?4? 347?5? 4 ?3? 567?9? ?9? ?6? 380?6? ?9? ?4? 267 874 490
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500 352
脱式计算
(390+30)?7 2340?5?3 2065+4675?5
396?3?2 25
648+480?3 124-735
45?(15?3)
×8?4 ?7 (601,246)?5 985-168?4 (34,22)?8 5 205,7×8
62-(25-7) 32×4,72 305×3-154
523+248-475
294,399?7
64,396?3,
470?5-28 ?3?5 684+207?3×8?7 3666 459?9?7 ?5?2, ?(54?9) 78 140 56
用竖式计算并验算
348?3= 398?7= 365?5=
380?6=
724?4=
309?3=
270?6=
?3= ?5= 105?7= ?3=
—————————————————————————————————————————————————————
?3= ?8= 7 735?9= 860?2= ?2= 628 912 750 608 208 204
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