360×25-540脱式计算

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?两位数乘法数字
(1)94×8 =(2)57×6 =(3)9×67 =

(4)26×9 =(5)41的第四年×9 =(6)57×3 =

(7)7×79 =(8)62×5 =(9)21×1 =

(10)3×57 = (11)5×84 =(12)8×26 =

(13)5×67 =(14)37×4 =(15)8×98 =

(16) (19)9×75 =(20)68×2 =

四年级的6×24 =(17),98×5 =(18)12×2 =

几十上百的一乘法
的数目(1)4×30 =(2)100×4 =(3)700×5 =

(4)9×800 =(5)8×80 =(6) 5×200 =

(7)6×300 =(8)2×600 =(9)300×9 =

(10)2×400 =(11)4×50 =(12)3×20 =

(13),60×1 =(14)7×600 =(15)5×90 =

(16),20×1 =(17 )90×3 =(18)9×300 =

(19)等级2×100 =(20),90×6 =
四位小数加减
(1)7.64 + 6.42 =(2)9.31 + 3.31 =(3)1.44 + 1.02 =

(4)3.42 - 2.19 =(5)8.13 - 7.79 =(6)8.96 - 5.27 =

(7 )7.37 6.17 + =(8)3.77 - 3.00 =(9)2.10 2.34 + =

(10)1.48 4.54 + =(11)7.69 9.31 + =(12)7.83 1.96 + =
BR>(13)7.45 - 5.77 =(14)8.98 - 7.83 =(15)3.08 9.01 + =

(16)9.17 4.62 + =(17)3.79 3.20 + =(18)9.51 - 8.59 =

(19)5.64 - 2.98 =(20)9.86 - 8.20 =

两位数的第四个年头乘三位数
(1)624×17 =(2)15 ×914 =(3)422×74 =

(4)894×45 =(5)103×80 =(6)445×32 =

(7)49×958 = (8)212×25 =(9)21×498 =

(10)80×857 =(11)980×69 =(12)371×16 =

(13) 70×569 =(14)53×223 =(15),36×499 =

(16),516×47 = 17×37 = 438(18)840×78 =

(19)级918×62 =(20)946×80 =
整个四十几以外的十足十
(1)20÷10 =(2)90÷10 =(3)30÷10 =

(4)60÷10 =(5)90÷30 =(6)60÷20 =

(7)40÷10 =(8)80÷20 =(9 )80÷10 =

(10)50÷10 =(11):40÷20 =(12)80÷40 =

(13)70÷10 =(14)60级÷30 =
四个整数字十除了数百几十
(1)920÷10 =(2)180÷90 =(3)900÷20 =

(4)420的÷10 =(5)540÷30 =(6)390÷30 =

(7)520÷10 =(8)330÷10 =(9)840÷20 =

(10)330÷30 =(11)100÷20 =(12)160÷20 =

(13)270÷30 =(14)510÷10 =(15)700÷10 =

(16)690÷30 =(17)440÷40 =(18)520÷40 =

(19)420÷70 =(20)720÷10 =
四年级,三位数整数加法打源
(1)940÷10 =(2)560÷10 =(3)100÷20 =

(4)240÷80 =(5)630÷ 10 =(6)280÷70 =

(7)400÷20 =(8)370÷10 =(9)550÷10 =

(10)880÷80 =( 11)740÷10 =(12)300÷20 =

(13)360÷10 =(14)600÷40 = 15÷900 = 90

(16)760 ÷10 =(17)180÷60 =(18)900÷20 =

年(19)400÷80 =(20)800÷50 =
四三两位数加成数
[标签:四年级]
(1)970÷97 =(2)456÷24 =(3)÷544 = 17

(4)484÷44 =(5)730÷73 =(6)924÷21 =

(7)806÷62 =(8)697÷41 =(9)870÷87 =

(10)684÷57 =(11 )÷726 = 66(12)816÷68 =

(13)920÷92 = 14÷830 = 83(15)885÷59 =

(16)846÷ 47 =(17)868÷28 =(18)780÷12 =

年(19)847÷77 =(20)450÷30 =
四位小数保留速度计算问题
( 1)0.448(保留两位小数)(2)0.841(保留两位小数)(3)5.401(到小数点后一位)的
(4)86.348(保留两位小数)(5)2.104(小数点后一位)(6)36.654(保留两位小数)的
(7)3.126(保留两位小数)(8)5.222(保留两位小数)(9)20.116(保留两位小数) BR>
(10)4.104(保留两位小数)(11)8.63(保留两位小数)(12)2.872(保留两位小数)的
(13)13.196(保留两位小数)(14)157.177(保留整数)(15)0.295(保留整数)的
(16)18.267(保留两位小数)(17)4.5(保留两位小数)(18)6.134(保留一位小数地方)的
(19)0.284(保留两位小数)(20)2.728(保留两位小数)
级四个小数加减
(1)34.85 - 11.73 =(2) 75.80 + 59.35 =(3)64.39 + 40.78 =

(4)67.23 - 19.17 =(5)50.10 - 48.60 =(6)91.91 - 75.10 =

(7)53.73 - 31.75 =(8)64.48 - 14.42 =(9)39.03 - 14.98 =

(10)22.04 + 80.13 =(11)28.36 - 24.00 =(12)61.83 + 69.95 =

(13 )65.36 - 38.06 =(14)29.37 - 18.02 =(15)42.09 - 32.46 =

(16)18.08 + 34.00 =(17)47.63 - 31.59 =(18)17.42 - 10.44 =
BR>(19)16.24 - 14.18 =(20)55.89 - 28.75 =

四个双位数的四年级算术
1)49 + 76 + 37 =(2)28×2 + 84 = (3)4÷1×1 =(4)36 + 69×4 =(5)9÷1-8 =

(6)4×1÷1 =(7)6÷3 + 19 =(8)5×7÷1 =(9)8 + 52÷1 =(10)2 + 50÷1 =

(11)9÷1 + 53 =(12)9÷1× 4 =(13)17×8×1 =(14)94-26-22 =(15)6÷1-3 =

(16)48 + 84×1 =(17)7×1 ÷1 =(18)7÷7×4 =(19)四年级7÷1×5 =(20)41×2 =
疯子口中的计算问题_ 97万21万= 400×80 = 720×7253≈58 + =

60×500 = 9000-2000 = 56×17620≈×7 =

56 +20婉婉= 4×15 = 578×27 ≈200-75 =

4000 + 3000 = 40×15 = 342×12528≈×2 =

70 +26婉婉= 400×15 = 786×48034≈+ 80 =

8000-1000 = 25×4 = 55×377240≈+ 23 =

3000 + 2000 = 25×30 = 214×9952≈102 + =

补充说:
18 +35婉婉= 25×300 = 496×89≈330-260 =

5000 + 4000 = 8×6 = 68×315≈9×6 + 15 =

47万+ 230 000 = 80×60 = 778×43≈8×9 + 7 =

9000-6000 = 800×600 = 87×115≈7×5 + 5 =

8000-2000 = 400 + 80 = 806×51≈5×8 + 9 =

76 -28婉婉= 277 + 23 = 400-128 = 120-25 = BR>
90万-30 000 = 480-400 = 300-253 = 107-79 =

23×30 = 300-23 = 200-149 = 280÷8 =

230×30 = 99 + 88 = 100 = -56 35×4 =

200×20 = 330-260 = 600-420 = 38×5 =

320×30 = 187 -99 = 95 + 105 = 277 + 23 =

240×20 = 330-70 = 4000 + 5000 = 1500 + 6000 =

480-80 = 70×600 = 100-78 = 6×9 + 8 =

260 + 70 = 600×5 = 1200-800 = 7 + 8×9 =

300-277 = 130×4 = 6000 + 9000 = 187 -88 =

187 -88 = 400×7 = 210-55 = 75×6 =

500-149 = 800÷2 = 185-30 = 75×4 =

400-127 = 450÷5 = 358 + 642 = 1200-400 = - 设为
15四年级的超口算题×5 = 16×5 = 23×3 = 12×50 = 27× 3 =

48÷4 = 90÷15 = 24×20 = 32×3 = 48÷16 =

12×8 = 27×3 = 56÷14 = 76-39 = 605 + 59 =

24÷8 = 14×2 = 83-45 = 96÷24 = 40÷20 = 40×30 =

30×23 = 12×8 = 27 + 32 = 48 + 27 = 4500×20 =

120×600 = 280 + 270 = 200×360 = 4×250 = 310-70 = 400×14 =

470 + 180 = 60×600 = 20×420 = 290×300 = 680 + 270 = 6×1300 =

1300×50 = 200×48 = 930-660 = 530 + 280 = 180×500 = 200×160 =

300×33 = 3×1400 = 60÷12 = 140×300 = 750-290 = 5×400 =

370×200 = 65÷13 = 15×10 = 84÷ 21 =

100-54 = 123 + 15 = 12×11 = 160×30 = 220×40 = 104×5 =

120×2 = 90÷30 = 270×30 = 360÷4 = 55÷5 = 32×6 =

35×2 = 140×7 = 13×6 = 280×3 = 350×2 = 50×11 =

250× 6 = 7200 + 900 = 410-201 = 125×8 = 48×20 =

390 + 140 = 11×80 = 24×50 = 530-70 =

420-90 = 7×700 = 203 + 98 = 370 + 580 =

240×3 = 24×30 = 240×30 = 360×5 = 180×15 =

45×7×2 = 8×5×25 = 35×2×5 = 4×9×50 = 160÷8÷2 =

6升=()毫升8000毫升=()l

20000毫升=()l = 10 L()毫升

40÷20 = 80÷40 = 60÷30 =

补充说:
90÷30 = 240÷80 = 480÷80 =

400÷50 = 320÷40 = 210÷30 =

60÷20 = 200÷50 = 360÷40 =

61÷20≈ 203÷35850≈÷40≈

60÷20019≈÷52≈360÷37≈

30×3 = 80×9 = 60×5 =

90÷30 = 720÷80 = 300÷60 =

19×96-962÷74 10000-(59 + 66)×64÷5940×45(798-616)的
( 315×40-364)÷7÷12520×8(121÷11)(2010-906)×(65 + 15)

(639-71×9)÷167(10800-800×4) ÷4÷720×90÷48
8
36×(913-276÷23)(93 + 25×21)×507 9÷13×63 + 498

723-(521 + 504)÷25÷384 + 12×23 371(39-21)×(396÷6)的
720÷(15-3×2)3889-(108-931)×5(800 + 200÷50)×3
的四年级孩子的口算问题_ 39×4 = 51×9 = 77×7 = 874×3 =

304×5 = 106×10 = 178 ×3 = 78×9 =

1.573×6 = 3.52×100×3.54 = 8×43.87 = 4

163×3 = 724×7 = 43.7×8 = 46.9×8 =

78×9 = 250×0.4 = 24×5 = 37×8 =

104×5 = 847×4 = 8×42 = 5.78×92 =

78×2 = 245×0 = 306×103×0 = 132×6 =

350×1000 = 317×4 = 1.52×6 = 125×0.8 =

302×783× 0 = 264×8 = 5.76×9 = 3875×0 =

1.854×0×100 = 937×4 = 285×4 = 134×3 =

125×8 = 25× 4 = 300×52 = 5×42 =

1.35×9 = 15×8 = 125×4 = 8.456×1000 =

21×8 = 32×0.1 = 572×8 = 372×0 =

153×46 = 173×10 = 15×80 = 3652007×0 =

384÷4 = 888÷74÷592 = 37÷384 = 32
1846年
÷10 = 468÷39 = 1460÷20 = 50÷2 =

78÷4 = 24.5÷14 = 49.5÷3 = 153÷0 =

462÷5 = 374÷10 = 73÷9 = 10÷3 =

73×78≈901÷4≈35×3821≈÷6≈
四年级算有趣的问题
7365-3999 = 1800÷36 = 35×14 =

4×50 20×2 300×6 120×3

50×600 16×70 150×20 60÷30

80÷20÷240 210 40 70÷400÷50

1000÷100×25 4 125×8

1)18×5 = 2)42÷7 = 3)38×2 = 4)36÷9 =

5)25×4 = 6)32 + 8 = 7)14×8 = 8)200×9 =

问:
我说的是关计算

答案:
9)70×5 = 10),28×3 = 11),45÷5 = 12),200×9 =

13),13×3 = 14),24×4 = 15),13×5 = 16),19×3 =

17),16×4 = 18),12×8 = 19),270×3 = 20 )56 + 8 =

21),19×4 = 22),34×3 = 23)11×7 = 24),15×4 =

25)32 + 8 = 26)24 ×4 = 27),70×5 = 28)18÷3 =

29)24×4 = 30),36÷9 = 31),40×4 = 32),500×5 =

33),90×5 = 34),45÷5 = 35),18×5 = 36),38×2 =

37)36×2 = 38),500×5 = 39)24÷3 = 40 )12×8 =

41)75×2 = 42),11×4 = 43),16×5 = 44),12×9 =

45)18÷3 = 46)90 ×5 = 47),800×7 = 48),90×5 =

49),15×5 = 50)81÷9 = 51),50×7 = 52),14×7 =

53),50×7 = 54),32×4 = 55),22×3 = 56),300×7 =

57)12×9 = 58)56 + 8 = 59),25×6 = 60 )25×3 =

61),12×5 = 62)14×7 = 63),25×3 = 64),12×6 =

65)33×5 = 66)72 + 8 = 67),12×438×2 = 68),21×6 =

69)700×4 = 70),12×6 = 71),22×5 = 72),80×3 =

73)÷42 = 7 74)25×6 = 75),11×6 = 76)14×8 =

77)28×3 = 78),40×4 = 79)20×9 = 80),1000×4 =

81)800×7 = 82),14×3 = 83),80×3 = 84),32×3 =

85)25×6 = 86 )20×9 = 87)12×9 = 88)36÷9 =

89)30×7 = 90),36×2 = 91)81÷9 = 92),500×5 =

93)13×6 = 94),32×3 = 95),17×5 = 96),14×6 =

97)26×3 = 98)79 + 24 = 99),16×3 = 100),28×3 =
一个四年级运营商的问题
560÷35÷2 = 25×4 = 254 + 99 =

45×12 = 750-570 = 50÷7 =

57 + 19 = 60÷60 = 70×60 =

91-28 = 58 + 79 + 42 = 80×5×6 =

90-25 = 35×35 + 65×35 = 125×80 =

44-15 = 1800÷90 = 125×16 =

97 + 18 = 10×24 = 45×14 =

26 + 14 = 81÷27 = 69÷23 =

123 + 259 + 741 + 477 = 95×46 + 46×5 = 102×34 =

749 + 5036 + 251 = 99×99 + 99 = 614-402 =

725-76-24 = 125×24 = 360÷24 =

1036-155-245 = 865×99 + 865 = 67×9 + 67 =

655 + 777 + 345 = 25×9×4×7 = 1814-378-422 =

398 + 558 + 442 = 1800÷5÷ 2 = 22×6×5 =

870-232-168 = 640÷16 = 7200÷45÷2 =
四年级它计算题第32×30 = 22×30 = 6×201 =

17×5 = 4×60 = 4500÷900 =

170 + 90 = 4800÷40 = 14×201 =

80÷16 = 4200÷20 = 2500÷50 =

16×5 = 32×20 = 67×4 =

2400÷40 = 3600÷60 = 87÷3 =

25×16 = 48×9 = 696÷3 =

125×6 = 48×25 = 780÷20 =

72 -45 = 360-85 = 720÷45÷2 =

3000 + 200 = 48×125 = 35×8 =

80-4 = 420÷35÷2 = 25×32 =

45÷15 = 78÷ 2 = 45×12 =

6×85 = 69÷23 = 67 + 25 =

710-420 = 50×90 = 22×8×5 =

12×5 = 6300÷30 = 690-420 =

102 + 284 = 480 + 290 = 930÷30 =

23×3 = 800×30 = 2100÷年70 = BR>四个运营商心算问题
640÷80 =

15×10 =

12×11 =

160×30 =

220×40 =

104×5 =

4500÷50 =

120×2 =

90÷30 =

270÷30 =

270×30 =

84÷21 =

76÷9 =

66÷7 =

100-54 =

123 + 15 =

360÷4 =

55÷5 =
第32×6 = 7000÷70 =

200÷40 =

180÷30 =

240÷40 =

35×2 =

140×7 =

13×6 =

280×3 =

350×2 =

50×11 =

250×6 =

7200 + 900 =

410-201 =

125×8 =

48×20 =

6600÷600 =

390 + 140 =

11×80 =

24×50 =

3600÷400 = 4000÷50 =

530- 70 =

420-90 =

9600÷30 =

7×700 =

203+ 98 =

1800÷ 300 =

240 + 570 =

4800÷400 =

370 + 580 =

580- 490 =

910- 370 =

25×8 =

270-190 =

36×2 =

75÷25 =

330÷ 11 =

6×800 =

5400÷9 =

420÷60 = 9×800 =

3×330 =
BR> 300×7 =

9×500 =

390÷13 =

6300÷700 =

5600÷700 =
BR> 4800÷12 =

3500÷7 =

370 + 560 =

520 + 490 =

450- 90 =
BR> 80 + 330 =

70×700 =

7000÷70 =

4000÷80 =

2400÷200 =
BR> 420-90 =

170 + 320 =

1000年至1051年=

520-260 =

910-190 =
BR> 35×200 =

22×200 =

8800÷400 =

9300÷300 =

6×300 =
BR> 1800÷200 =
四年级操作人员的培训问题_ 640÷80 =

15×5 =

23×3 =

12×2 ×5 =

480÷80 =

16×5 =

27×3 =

90÷15 =

48 ÷4 =

640÷16 =

39÷3 =

24×20 =
第32×3 =

48 ÷16 =

12×8 =

27×3 =

56÷14 =

24÷8 =

14 ×2 =

83-45 =

560÷80 =

96÷24 =

40÷20 =

40 ×30 =

37 + 26 =

76-39 =

605 + 59 =

30×23 =

12 ×8 =

27 + 32 =

48 + 27 =

4500×20 =

73 + 15 =

120 ×600 =

200×360 =

6800×400 =

280 + 270 =

4×2500 =

6000 ÷40 =

5×1280 =

310-70 =

400×14 =

470 + 180 =

1000 ÷25 =

160×600 =

20×420 =

290×300 =

8100÷300 =

7600 ÷200 =

7600÷400 =

680 + 270 =

980÷14 =

4200÷30 =
页6 ×1300 =

1300×50 =

200×48 =

930-660 =

530 + 280 =

9200 ÷400 =

840÷21 =

180×500 =

8000÷500 =

1900÷20 =

200 ×160 =

8700÷300 =

300×330 =
页3×1400 =

7000÷14 =

600 ÷12 =

9600÷80 =

140×300 =

8800÷40 =

9600÷800 =

750 -290 =

5×490 =

760×20 =

7500÷500 =

370×200 =

650 ÷13 =

8600-4200 =
补充说:
2800÷100 +

789



947

-

599

)+ 76×64

36×(913-276÷23)

(93

+ 25×21)×9

BR>

507÷13×63 +

498
中国

中国723

-

(521

+504)÷25 BR>
中国
384÷12 + 23×371

(39

-21)×(396 ÷6)的

中国57×12-560÷35

848

-640÷ 16×12
中国

中国
中国1500 BR>

-32×45

[

192

-



54

+

38

)的

]×67
中国

138×25×4

中国(13×125) ×(3×8)

中国
(12 + 24 + 80)×50
中国

中国

704×25

-509

25×32×125
中国

32×(25 + 125)的

中国178 ×101-

178

84×36 + 64×84
中国

中国
75×99 + 2×75

中国83 ×102-83×2
中国

98×199
中国

123×18-123 ×3 + 85×123
中国

50×(34×4)×3

补充说:
这一个?

一些不符合根据业主的要求拾取

360÷[(12 + 6)×5〕
288÷[(26-14)×8]
500×6 - (50×2-80)
(105×12-635)÷25
864÷[(27-23)×12]
(45 + 38-16)×24 BR> 500-(240 + 38×6)
[64-(87-42)×15
(845-15×3)÷1612×[(49-28)÷7]
450÷[(84-48])÷12
(58 + 37)÷(64-9×5)
95÷(64-45)
178-145÷5×6 + 42 BR> 812-700÷(9 + 31×11)
85 + 14×(14 + 208÷26)
(284 + 16)×(512-8208÷18)
120-36× 4÷18 + 35
(58 + 37)÷(64-9×5)
(6.8-6.8×0.55)÷8.5
0.12×4.8÷0.12×4.8
(3.2×1.5 + 2.5)÷1.6
6-1.6÷4 = 5.38 + 7.85-5.37 = 7.2
0.8-1.2÷×5 = 6-1.19×3-0.43 =
6.5×(4.8-1.2×4 )=
5.8×(3.87-0.13)+ 4.2×3.74
32.52-(6 + 9.728÷3.2)×2.5
[(7.1-5.6)×0.9-1.15]÷2.5
5.4 ÷2.6×(3.7- 2.9)0.62]
12×6÷(12-7.2)-6
12×6÷7.2-6
0.68×1.9 + 0.32×1.9
( 58 + 370)÷(64 -45)
420 + 580-64×21÷28
(136 + 64)×(65-345÷23)
48.10.15-10.75×0.4-5.7
388+(5000 -1000)
158 + 262 + 138
375 + 219 + 381 + 225
5001-247-1021-232
(181 + 2564)2719
378 + 44 + 114 + 242 + 222
276 + 228 + 353 + 219
(375 + 1034)+(966 + 125)
(2130 + 783 + 270)1017
99 + 999 + 9999 + 99999
7755-(2187 + 755)
2214 + 638 + 286
3065-738-1065
899 + 344
2357-183-317-357
2365-1086-214
497-299
2370 + 1995年
3999 + 498
1883-398
12×25
75×24
138×25×4
(13×125)×(3×8)
(12 + 24 + 80)×50
704×25 25×32×125第32×(25 + 125)×88 125
102×76 58×98 178
×101-178
84×36 + 64×84
75×99 + 2×75
83×102-83×2
98×199
123×18-123×3 + 85×123
50×(34×4)×3
25×(24 + 16)
178×99 + 178
79×42 + 79 + 79×57
7300÷25÷4
8100÷4÷75
16800÷120
30100÷2100
32000÷400
49700÷700 BR> 1248÷24
3150÷ 15
4800÷25
2356-(1356-721)
1235-(1780至1665年)
75×27 + 19×2 5
31×870 + 13×310
4×(25×65 + 25×28)
(181 + 2564)2719
378 + 44 + 114 + 242 + 222
276 + 228 + 353 + 219
(375 + 1034)+(966 + 125)
(2130 + 783 + 270)1017
99 + 999 + 9999 + 99755-(2187 + 755)
2214 + 638 + 286 3065-738 -1065
899 + 344
2357-183-317-357 2365-1086-214
497-299
2370 + 1995
3999 + 498
1883-398
12×25 75×24 138
×25×4
(13×125)×(3×8)
(12 + 24 + 80)×50 BR> 704×25
25×32×125第32×(25 + 125)
88×125
102×76
58×98
178×101-178 BR> 84×36 + 64×84
75×99 + 2×75 83×102-83×2
98×199
123×18-123×3 + 85×123
50 ×(34×4)×3
25×(24 + 16)
178×99 + 178
79×42 + 79 + 79×57
7300÷25÷4
8100 ÷4÷75
16800÷120
30100÷2100
32000÷400
49700÷700
1248÷24
3150÷ 15
4800÷25
21500÷125
2356-(1356 -721)
1235-(1780至1665年)
75×27 + 19×25
31×870 + 13×310
4×( 25×65 + 25×28)
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2021-05-25 · 贡献了超过202个回答
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?两位数乘法数字
(1)94×8 =(2)57×6 =(3)9×67 =

(4)26×9 =(5)41的第四年×9 =(6)57×3 =

(7)7×79 =(8)62×5 =(9)21×1 =

(10)3×57 = (11)5×84 =(12)8×26 =

(13)5×67 =(14)37×4 =(15)8×98 =

(16) (19)9×75 =(20)68×2 =

四年级的6×24 =(17),98×5 =(18)12×2 =

几十上百的一乘法
的数目(1)4×30 =(2)100×4 =(3)700×5 =

(4)9×800 =(5)8×80 =(6) 5×200 =

(7)6×300 =(8)2×600 =(9)300×9 =

(10)2×400 =(11)4×50 =(12)3×20 =

(13),60×1 =(14)7×600 =(15)5×90 =

(16),20×1 =(17 )90×3 =(18)9×300 =

(19)等级2×100 =(20),90×6 =
四位小数加减
(1)7.64 + 6.42 =(2)9.31 + 3.31 =(3)1.44 + 1.02 =

(4)3.42 - 2.19 =(5)8.13 - 7.79 =(6)8.96 - 5.27 =

(7 )7.37 6.17 + =(8)3.77 - 3.00 =(9)2.10 2.34 + =

(10)1.48 4.54 + =(11)7.69 9.31 + =(12)7.83 1.96 + =
BR>(13)7.45 - 5.77 =(14)8.98 - 7.83 =(15)3.08 9.01 + =

(16)9.17 4.62 + =(17)3.79 3.20 + =(18)9.51 - 8.59 =

(19)5.64 - 2.98 =(20)9.86 - 8.20 =

两位数的第四个年头乘三位数
(1)624×17 =(2)15 ×914 =(3)422×74 =

(4)894×45 =(5)103×80 =(6)445×32 =

(7)49×958 = (8)212×25 =(9)21×498 =

(10)80×857 =(11)980×69 =(12)371×16 =

(1
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