小升初计算题练习2

小升初专题训练一：小数、分数的简便运算

33

31X43-31+58X31-x3.4+0.375x6-

85

411

2-x7.454-2.8x2—56X78+13X83+27X78+83X9

520

423

0.91--+1.25x1.0924+l—+76x二

535

199+99X997.63X9.9+0.763

3.74X5.8+62.6X0.583.43X14+1.4X75.7-14

3331

0.375x4---+l5.625x37.5%7—x8.4+69x2一

88410

⑵x标刈嚼

275+326x274cr136-20is68

27x——+136x——+180x—

275x326-51137137137

333x333+999x88916x76.1+41x7.61+201x2.39

典型类型：直接乘法分配律的直接应用、“XI”、积不变、“拆分”、“交换”

型。

例1.

巩固练习:

例2.2005X97.75+4010X1.12537X1111+7777X9

巩固练习：4.7X2.8+3.6X9.4999X778+333X666

彳列3.199X208-198X209巩固练习：35X67—34X68

例4.巩固练习:

例5.12X3434-34X1212巩固练习:例182018X1998—19981998X2018

例6.巩固练习:

例7、巩固练习:

例8、巩固练习:

5791113151719

-------------1------------F--------4-------

612203042567290

例9、(-+-+—+—)x(-4--+—+—+-+—)x(-4--+-)

89101191011128910111291011

巩固练习:

1)xd+L..」)

2010232011232011232010

131

5--[(0.13x-+l-400)x-]7.6x2011.4+(2011.4+12.5)x2.4

242

9992+1999

573+697x5723636

8x1111+9999x8-----------------------------1-----------

573x697-1247272

2010x0.31.297

-------------------1-----------99—x49

2012x0.5201298

4-12,^1142Q3

—x23—+16x—+—x—-X(7.754-——3.375+9.25x3-)

71377139278

14

16.25+1.7+0.75+1.71—X17.6+36+—+2.64x12.5

45

J______3

-)x2009x2010凡7x4

2069201027727

7121315…u30…29

(19.2+13—)x6.25+(40.8+26—)x6-—x-----F0.375x----F3+8x—

8373737

1488674门25打3749

39x+148x+48x51—4--+71—4--+n9i1—4--

149149149334455

20111

201U20111001x5—+198-198—+1

201213199200

0.75x2.5+0.085x75-7.5x0.1[1-328H-(328X2.5)]4-1.2

(6-X5.43+4.57--)-(1—--)x1.4494x56.87+94x43.48+60x10.035

425246

然22-6」+2―

7.15x2.5x18-1.25x28x7.15

9159915

323312

)x2011x2012(15—X-+17.7-1——0.75)x—

20112012104323

51.4ccir1414

3-x(3—+—)+3.4x——I---x5.76-0.213x—H-----x6.37

5111711191919190

91

1.56x6.8+2.4x1.56+9.2x0.44—x67.8+54.3-1一一221x9%

1()9

5”6“111576x(---)+23x(—+—)-53x(--J-)

-x79---K50x—I—x—

9179917235353762376

166,一一6.一11610J91211r122

4.73x—+15—x—+4.75x——+15-x—-----2----1—x—4-7+-x——

11411114111322513563

13—+86—x0.25+0.625x86—+0.125x86—

19191919

37-0.37x8.28-3.7x0.172

11111

L4-L4.・・・・

r十J111'1''

26122090

2222

++2007x20082008-2008x20072007

1x77x1313x19145x151

55