运算定律与简便计算练习题.docx

1、运算定律与简便计算练习题运算定律与简便计算练习丿用简便算法计算下面冬题。(181+2564 )2214+638+286158+262+138+71912X2525X24 138X25X4(13X125) X (3X8)(12+80) X50704X2525 X 32 X 12532 X (25+125)88 X125102X7658X98178 X 101 一 17884 X 36+64 X 8475 X99+75 83X102-83X2285+633+115+67 427-89+73 438+34+162 367+278-267+123218+39+61218+138-38286-23-77

2、218+523-23136-29-61336-45-55272-36-64318+52+48318+544-44372-23-7718+333-33772-56-44786-38-48418+143-43236-66-34686-29-61636-47-53886-43-57618+147-47172-65-35101X3539X42+39689-546-5482X99+8235+13+65+87125X25X3228X10282+114+18+586144X90-85X14425X32 99X3238X10132X99+32125X32 25X46101 X56 99X261022-478-

3、42264987- (287+135)478-256-144 672-36-698-291 -9568- (68+178) 561 -19+58382+165+35-82155+256+45-98 236+189+64 759-126-25925X79X4 569-256-44 216+89+11 57X125X8318+155-55518+88+12118+123-23318+41+59576+ (187+24)576+ (187-76) 843- (543-179)347+ (153-129)947+ (372-447) 771- (89+71)576- (76+59) 576-272-

4、(89+72) 756-375+ (187+25) 476+246+ (153- 146) 546+976- (71+76) 337-576- (176+72)136-198780-101418+198236-98686-197636-299336-299619+102171-102318+198518+103118+99四年级下册整数和小数的简便运算练习题225 一 (74+128+175 三 5 154+720 60-123 10026)(750-65X11) X70【200- (95+60) X80(231-154) X(78-50)125X25X3282+114+18+58611000

5、4-84-1258-152+ 28X102144X90-85X14499X3225X32(320-136) X+ 38X101(+)+(28+32) X (1204-5)四年级数学下册简便运算练习题101 X56125 X 32 25 X4699 X 261022 - 478 - 422987- (287 + 135) 478-256-144 672-36-6436 + 64 - 36 + 64 487 - 287 -139-61500-257-34- 1432000-368- 1321814-378-42289X99 + 89155 + 264 + 36+4425 X (20+4)88X22

6、5 + 225X 12698-291 -9568 - ( 68 + 178 )561 -19 + 58382 + 165 + 35-82155 + 256 + 45-98236+189+64 759-126-259 25 X 79 X 4569-256-44 216+89+11 57X125X81050154-7 7200244-30容易出错类型（共五种类型）600-60一1520X4一20X4736-35X2025X4一25X498-18X5+2556X8三56X8280-80一 412X6-12X6175-75三 2525X8一25X880-20X2+6036X9一36X936-36 4-

7、 6-625X8 一(25X8 )100+45-100+4515X97+3100+1-100+148X99+11000+8-1000+85+95X28219X99 37 X98 58X101 76X 10278 X46+78 X 54169 X 123 -23 X 16937 X 99+37 129 X 101129149 X 69149+149 X 32 56 X 51+56X 48+56 125 X 25 X 32 24 X 25125 X48 514+189214 369256+156 56 X 25 X 4 X 125 24 X73+26X24 16X98+32125X38 + 125

8、X3065+35X13672-36+64X25102+1-102+140+36020-1013+24X8100-36+6425 X 32 400425+75-25+7532468+3225X16-25X1025X16X125(125 + 16) X879X99 + 79781 X 101-78179X16+79X78 + 79X6 25X101789 X 99 800 三 125 1736+403375+219+381+225378+44+114+242+222+999+99+9158+262+1385001-247-1021-232(181+2564 ) +2719 276+228+353+

9、219(375+1034) + (966+125)(2130+783+270)+101799+999+9999+999997755 一 (2187+755) 2214+638+286 3065 一 738 一 1065899+344 2357 183 317 357 2365 1086 214 497-2992370+1995 3999+498 1883 398 12X25 75X24138 X 25 X 4 (13X125) X (3X8) (12+24+80) X50704X25 25X32X125 32 X (25+125) 88X125 102258-42-16545-167-1454

10、78-47-178344- (144+37)236- (177+36)第三类：乘45X4X523 X5X225X9X48X (125X13)(250X125) X(4X8)88X12572X125125X64X2542X125X8X525X4X88X125第四类：乘(12+50) X40125X (40-4)76X10318X12525X4442X2599X999X78第五类：乘45 X 37+37 X 5528X21+28X7917X23-23X738 X 46+64 X 3899X32+3246+46X59167X2+167X3+167X5 39X8+6X39-39X428X225-2X2

11、25-6X225(42+25) X125+ (18+15) X12523X2X4+25X4X2+27X1 X 8+25X8X199 X 22+33 X 34第六类：除360 4 三 9 250F5 三 2 600F12F5(6467-832) + (1832-1467) 1530+ (592-530) -192(2+4+6+98+100) -(1+3+5+97+99)第八类：乘除960X464-48 990004-121 X11 3702X384-12346404- (164-4) 10004- (1254-4)第九类：加减乘除(98+147)三49 (230-23)三23 (250-25) 4-251736三28+1064三28125X (860+24012)700+6124-12X4(37+15) X85+1360