200分!{小学数学题(出题)}1.小数加减法(120道)2.小数乘除法(120道)3.脱式计算(120道)

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200分!{小学数学题(出题)}1.小数加减法(120道)2.小数乘除法(120道)3.脱式计算(120道)
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200分!{小学数学题(出题)}1.小数加减法(120道)2.小数乘除法(120道)3.脱式计算(120道)
200分!{小学数学题(出题)}
1.小数加减法(120道)
2.小数乘除法(120道)
3.脱式计算(120道)

200分!{小学数学题(出题)}1.小数加减法(120道)2.小数乘除法(120道)3.脱式计算(120道)
1.小数加减法(120道)
0.9+0.1= 1-0.8= 51÷3= 360÷4= 36+44=
3800-900=
4×12= 80-19= 7×13= 4.5-4= 5.6+4=
5.7+3.3=
10-4.4= 6+6.6= 9.5-2.7= 1-0.55= 3.7+4.8=
7+3.3=
0.9+1= 45÷3= 2.7+3.9= 18×4= 416÷4=
1-0.44= 0.7+0.9= 3.25+0.75=
14.6-0.4= 10-0.1=
14+0.78= 1-0.3= 5-0.08= 1.1-1=
1.64+2.35= 8.34-6.22= 12.6+3.4=
1.3+4.3 7.2+6.9 9.3-8.8 4.4+15.99 19.8-5.6 96.3-56.2
79.2+56.8 1.99+25.7 93.88-69.21 0.33+9.88 136.5-105.763.4+52.1
93.1-20.9 63.1-13.8 103.9+450.613.88-5.77 96.12+52.3 13.2+65.1
7
8.9-65.4 12.3+96.5 42.5-19.5 73.55-14.68 46.32+65.18
95.44+53.12 96.42-13.88 42.5-17.8 63.22-22.77 69.12+78.39
42.55-0.69 0.55-0.33 45.96-24.41 75.2-28.3 64.2+15.4
10.23-0.88 4.56+14.62 7.9+53.1 56.4+23.1 96.4-57.1 55.1+65.9
56.78-21.5 96.1-43.2

2.6+0.4 0.375+0.625 5.8+2 5-0.2 0.48+0.29
4.3-1.6 0.74-6.4 1-0.89 3-2.3
4.2+15.6 24.8-18.2 13+7.1 10-9.05 3.96+6.04 4.03-1.97
0.3+0.4 1.5+0.5 2.4+1.2 4.5-0.9 5.3-4.8 8+2.5
7.65+2.13 3.14-2.09 0.96+4.68 8-7.56
2.1+0.2= 0.3+0.7= 3.6+1.6= 7.5-0.5= 3.7-0.9=
2.13-0.02= 3.51+0.2= 102+0.3= 1.12-1.02= 4.5-0.01=
1.2+8.8= 4.3—4.3= 5—0.2=
2.2—1.4= 8.7—2.6= 4.7+2.3=
0.6—35= 6.3—0.6= 12.9—12=
①3.51-2.43= ②4.2-1.02= ③2.4+2.66= ④3.17+2.45=
⑤9+1.5= ⑥4.5-0.79= ⑦1.69+2.21= ⑧4.51+2.49=
6.45-3.29=3.16 3.29+3.16= 6.45-3.16=

12.4+0.28=12.68 12.68-0.28= 12.68-12.4=
.
3.58+12.7 8.07-2.074 10.475-4.75

0.3+0.7 0.75+0.25 4.6-3.6 5.7-4 4.7-0.9 0.35+1.25

8-2.5 2.56-0.37 3.9+2.03 1-0.2 3.6+2.4 0.5+7.25
3.58+12.7 8.07-2.074 10.475-4.75
0.3+0.7 0.75+0.25 4.6-3.6 5.7-4 4.7-0.9 0.35+1.25

8-2.5 2.56-0.37 3.9+2.03 1-0.2 3.6+2.4 0.5+7.25
9.3 + 6.98 24+ 9.9 13.8- 8.3 7.56-4.56
2.小数乘除法(120道)
乘法:
0.1*0.1=
1.2*2.3=
1.3*2.4=
1.1*2.2=
0.1*0.2=
2.3*3.4=
2.4*3.5=
2.2*3.3=
0.1*0.3=
3.4*4.5=
3.5*4.6=
3.3*4.4=
0.1*0.4=
4.5*5.6=
4.6*5.7=
4.4*5.5=
0.1*0.5=
5.6*6.7=
5.7*6.8=
5.5*6.6=
0.1*0.6=
6.7*7.8=
6.8*7.9=
6.6*7.7=
0.1*0.7=
7.8*8.9=
1.3*1.2=
7.7*8.8=
0.1*0.8=
1.2*3.4=
1.5*1.6=
8.8*9.9=
0.1*0.9=
1.2*8.9=
1.5*1.7=
1.4*1.6=
0.1*1=
1.4*7.8=
5.8*1.7=
2.2*6.6=
除法:
1÷0.1=
1.2÷2=
2.3÷2=
2.8÷4=
2÷0.2=
1.3÷2=
3.4÷2=
5.4÷6=
3÷0.3=
1.4÷2=
4.5÷2=
7.2÷8=
4÷0.4=
1.5÷2=
5.6÷2=
8.1÷9=
5÷0.5=
1.6÷2=
6.7÷2=
2.1÷7=
6÷0.6=
1.7÷2=
7.8÷2=
6.4÷8=
7÷0.7=
1.8÷2=
8.9÷2=
3.3÷3=
8÷0.8=
1.9÷2=
4.5÷5=
6.3÷9=
9÷0.9=
1.4÷7=
2.4÷6=
4.4÷4=
0.1÷2=
1.9÷8=
3.6÷4=
1.21÷2=
3.脱式计算
脱式计算.
408-12×24 (46+28)×60 42×50-1715÷5
32+105÷5 (108+47)×52 420×(327-238)
(4121+2389)÷7 671×15-974 469×12+1492
405×(3213-3189) 5000-56×23 125×(97-81)
6942+480÷3 304×32-154 20+80÷4-20=
100÷(32-30)×0= 25×4-12×5=
70×〔(42-42)÷18〕= 75×65+75×35=
用简便方法计算下面各题
1、89+124+11+26+48 2、875-147-23
3.25×125×40×8 4、147×8+8×53
5、125×64 6、0.9+1.08+0.92+0.1
用简便方法计算
①89+124+11+26+48 ②875-147-23
③147×8+8×53 ④125×64
计算下面各题.
1.280+840÷24×5 2.85×(95-1440÷24)
3.58870÷(105+20×2) 4.80400-(4300+870÷15)
5.1437×27+27×563 6.81432÷(13×52+78)
7.125×(33-1) 8.37.4-(8.6+7.24-6.6)
计算.(1∶1)
(1)156×107-7729 (2)37.85-(7.85+6.4)
75÷〔138÷(100-54)〕 85×(95-1440÷24)
80400-(4300+870÷15) 240×78÷(154-115)
1437×27+27×563 〔75-(12+18)〕÷15
2160÷〔(83-79)×18〕 280+840÷24×5
325÷13×(266-250) 85×(95-1440÷24)
58870÷(105+20×2) 1437×27+27×563
81432÷(13×52+78) [37.85-(7.85+6.4)] ×30
156×[(17.7-7.2)÷3] (947-599)+76×64
36×(913-276÷23) [192-(54+38)]×67
[(7.1-5.6)×0.9-1.15]÷2.5 81432÷(13×52+78)
5.4÷[2.6×(3.7-2.9)+0.62] (947-599)+76×64 60-(9.5+28.9)]÷0.18 2.881÷0.43-0.24×3.5 20×[(2.44-1.8)÷0.4+0.15] 28-(3.4 1.25×2.4) 0.8×〔15.5-(3.21 5.79)〕 (31.8 3.2×4)÷5 194-64.8÷1.8×0.9 36.72÷4.25×9.9 3.416÷(0.016×35) 0.8×[(10-6.76)÷1.2]
(136+64)×(65-345÷23) (6.8-6.8×0.55)÷8.5
0.12× 4.8÷0.12×4.8 (58+37)÷(64-9×5)
812-700÷(9+31×11) (3.2×1.5+2.5)÷1.6
85+14×(14+208÷26) 120-36×4÷18+35
(284+16)×(512-8208÷18) 9.72×1.6-18.305÷7
4/7÷[1/3×(3/5-3/10)] (4/5+1/4)÷7/3+7/10
12.78-0÷( 13.4+156.6 ) 37.812-700÷(9+31×11) (136+64)×(65-345÷23) 3.2×(1.5+2.5)÷1.6
85+14×(14+208÷26) (58+37)÷(64-9×5)
(6.8-6.8×0.55)÷8.5 (284+16)×(512-8208÷18)
0.12× 4.8÷0.12×4.8 (3.2×1.5+2.5)÷1.6
120-36×4÷18+35 10.15-10.75×0.4-5.7
5.8×(3.87-0.13)+4.2×3.74 347+45×2-4160÷52
32.52-(6+9.728÷3.2)×2.5 87(58+37)÷(64-9×5)
[(7.1-5.6)×0.9-1.15] ÷2.5 (3.2×1.5+2.5)÷1.6
5.4÷[2.6×(3.7-2.9)+0.62] 12×6÷(12-7.2)-6
3.2×6+(1.5+2.5)÷1.6 (3.2×1.5+2.5)÷1.6
5.8×(3.87-0.13)+4.2×3.74
33.02-(148.4-90.85)÷2.5
(3)287×5+96990÷318 (4)1554÷[(72-58)×3]
脱式计算
2800÷ 100+789 (947-599)+76×64
1.36×(913-276÷23) 2.(93+25×21)×9
3.507÷13×63+498 4.723-(521+504)÷25
5.384÷12+23×371 6.(39-21)×(396÷6)
(1)156×[(17.7-7.2)÷3] (2)[37.85-(7.85+6.4)] ×30
(3)28×(5+969.9÷318) (4)81÷[(72-54)×9]
57×12-560÷35 848-640÷16×12
960÷(1500-32×45) [192-(54+38)]×67
138×25×4 (13×125)×(3×8) (12+24+80)×50 704×25 25×32×125 32×(25+125)
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 75×27+19×2 5 31×870+13×310
4×(25×65+25×28) 138×25×4 (13×125)×(3×8) (12+24+80)×50
25×32×125 32×(25+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
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
3999+498
1883-398
12×25
75×24
138×25×4
(13×125)×(3×8)
(12+24+80)×50
704×25
25×32×125
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
1248÷24
3150÷15
4800÷25
21500÷125
附加题:
2356-(1356-721)
1235-(1780-1665)
75×27+19×2 5
31×870+13×310
4×(25×65+25×28)

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一、口算。
2.1+0.2= 0.3+0.7= 3.6+1.6= 7.5-0.5= 3.7-0.9= 2.13-0.02= 3.51+0.2= 102+0.3= 1.12-1.02= 4.5-0.01=

二、火眼金睛辩对错,并且改正。
(1)12.45-1.35-0.65 (2)2...

全部展开

一、口算。
2.1+0.2= 0.3+0.7= 3.6+1.6= 7.5-0.5= 3.7-0.9= 2.13-0.02= 3.51+0.2= 102+0.3= 1.12-1.02= 4.5-0.01=

二、火眼金睛辩对错,并且改正。
(1)12.45-1.35-0.65 (2)21.32-(6.32+8.3)
=21.32-6.32+8.3 =12.45-(1.35+0.65)
=15+8.3 =12.45-2
=23.3 ( ) =10.45 ( )

三、用简便方法计算。
(1)27.3+73.2+72.7 (2) 585+189+215 (3) 5.85-1.75-0.25



(4)768-274-126 (5) 5.85+1.89+2.15 (6)24.8+14.6+15.4



(7)42.5-22.17-7.83 (8)3.8+1.37+6.2+12.63



四、火眼金睛辩对错。
(1)整数加法交换律、结合律对小数同样适用----------------( )
(2)4.72+0.1-4.72+0.1=0 -----------------------------( )
(3)计算小数加减法,得数的小数部分有0的要把0去掉 ------( )
(4)小数加减法混合运算一定要先算加法,后算减法-----------( )
五、解决问题。
1、某天早上气温是6.5℃,中午气温比早上升高了3.1℃,晚上比中午降低了4.5℃,请问这天晚上的气温是多少?



2、妈妈买水果花了5.8元,买蔬菜花了2.6元,买鱼花的钱比水果和蔬菜的总和还多5.2元,买鱼花了多少钱?



3、前楼中心小学的同学利用周日采集树种,第一周采集2.8千克,第二周采集比第一周的少0.13千克,两周一共采集了多少千克?



4、小明爸爸买了一瓶色拉油,连瓶共重3.4千克,用去一半油后连瓶重1.9千克,你知道这瓶油原来有多少千克?瓶有多重?



5、小芳去书店买书,付了30元,找回了26.4元,小芳发现售货员多找给了她21.8元,问售货员实际应该找给小芳多少钱?这本书的价钱是多少?


6、前楼中心小学四年级男子平均身高122.8厘米,三年级男子平均身高比四年级矮14.2厘米,吴浩然是三年级二班的一名男同学,他的身高是1.26米,问吴浩然比三年级男子平均身高高多少?

收起

1+1=
1+2=
1+3=
1+4=
1+5=
1+6=
0.9+0.1= 1-0.8= 51÷3= 360÷4= 36+44=
3800-900=
4×12= 80-19= 7×13= 4.5-4= 5.6+4=
5.7+3.3=
10-4.4= ...

全部展开

1+1=
1+2=
1+3=
1+4=
1+5=
1+6=
0.9+0.1= 1-0.8= 51÷3= 360÷4= 36+44=
3800-900=
4×12= 80-19= 7×13= 4.5-4= 5.6+4=
5.7+3.3=
10-4.4= 6+6.6= 9.5-2.7= 1-0.55= 3.7+4.8=
7+3.3=
0.9+1= 45÷3= 2.7+3.9= 18×4= 416÷4=
1-0.44= 0.7+0.9= 3.25+0.75=
14.6-0.4= 10-0.1=
14+0.78= 1-0.3= 5-0.08= 1.1-1=
1.64+2.35= 8.34-6.22= 12.6+3.4=
1.3+4.3 7.2+6.9 9.3-8.8 4.4+15.99 19.8-5.6 96.3-56.2
79.2+56.8 1.99+25.7 93.88-69.21 0.33+9.88 136.5-105.763.4+52.1
93.1-20.9 63.1-13.8 103.9+450.613.88-5.77 96.12+52.3 13.2+65.1
7
8.9-65.4 12.3+96.5 42.5-19.5 73.55-14.68 46.32+65.18
95.44+53.12 96.42-13.88 42.5-17.8 63.22-22.77 69.12+78.39
42.55-0.69 0.55-0.33 45.96-24.41 75.2-28.3 64.2+15.4
10.23-0.88 4.56+14.62 7.9+53.1 56.4+23.1 96.4-57.1 55.1+65.9
56.78-21.5 96.1-43.2

2.6+0.4 0.375+0.625 5.8+2 5-0.2 0.48+0.29
4.3-1.6 0.74-6.4 1-0.89 3-2.3
4.2+15.6 24.8-18.2 13+7.1 10-9.05 3.96+6.04 4.03-1.97
0.3+0.4 1.5+0.5 2.4+1.2 4.5-0.9 5.3-4.8 8+2.5
7.65+2.13 3.14-2.09 0.96+4.68 8-7.56
2.1+0.2= 0.3+0.7= 3.6+1.6= 7.5-0.5= 3.7-0.9=
2.13-0.02= 3.51+0.2= 102+0.3= 1.12-1.02= 4.5-0.01=
1.2+8.8= 4.3—4.3= 5—0.2=
2.2—1.4= 8.7—2.6= 4.7+2.3=
0.6—35= 6.3—0.6= 12.9—12=
①3.51-2.43= ②4.2-1.02= ③2.4+2.66= ④3.17+2.45=
⑤9+1.5= ⑥4.5-0.79= ⑦1.69+2.21= ⑧4.51+2.49=
6.45-3.29=3.16 3.29+3.16= 6.45-3.16=

12.4+0.28=12.68 12.68-0.28= 12.68-12.4=

3.58+12.7 8.07-2.074 10.475-4.75

0.3+0.7 0.75+0.25 4.6-3.6 5.7-4 4.7-0.9 0.35+1.25

8-2.5 2.56-0.37 3.9+2.03 1-0.2 3.6+2.4 0.5+7.25
3.58+12.7 8.07-2.074 10.475-4.75
0.3+0.7 0.75+0.25 4.6-3.6 5.7-4 4.7-0.9 0.35+1.25

8-2.5 2.56-0.37 3.9+2.03 1-0.2 3.6+2.4 0.5+7.25
9.3 + 6.98 24+ 9.9 13.8- 8.3 7.56-4.56
0.396÷1.2= 0.756÷0.36= 15.6×13=
0.18×15= 0.025×1.4= 3.06×36=
0.04×0.12= 3.84×2.6≈ 5.76×3=
(保留一位小数)
7.15×22= 90.75÷3.3 3.68×0.25
16.9÷0.13=130 1.55÷3.9 3.7×0.16
13.76× 1.8= 5.2× 1.6 8.4×1.3

6.4×0.5 4.48×0.4 5.25×5
35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)
10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)


0.43×0.28= 6.45×0.73= 4.6×0.6=
8.9×0.05= 3.08×0.43= 1.5×26.7=
5.22÷29= 18.72÷3.6= 13.95÷3.1=

7.15×22 90.75÷3.3 3.68×0.25
1. 用竖式计算.18.25×34=
2. 用竖式计算.9.35×4.2=
3. 用竖式计算.15.07×9.8=
4. 用竖式计算.7.02×0.56= (得数保留两位小数)
30.8÷[14-(9.85+1.07)] [60-(9.5+28.9)]÷0.18 2.881÷0.43-0.24×3.5 20×[(2.44-1.8)÷0.4+0.15] 28-(3.4 1.25×2.4) 2.55×7.1 2.45×7.1 777×9 1111×3 0.8×〔15.5-(3.21 5.79)〕 (31.8 3.2×4)÷5 31.5×4÷(6 3) 0.64×25×7.8 2.2 2÷2.5 2.5÷2 194-64.8÷1.8×0.9 36.72÷4.25×9.9 5180-705×6 24÷2.4-2.5×0.8 (4121 2389)÷7 671×15-974 469×12 1492 405×(3213-3189) 3.416÷(0.016×35) 0.8×[(10-6.76)÷1.2] 19.4×6.1×2.3 5.67×0.2-0.62 18.1×0.92 3.93 0.0430.24 0.875 0.4×0.7×0.25 0.75×102 100-56.23 0.78 5.436 1 4.07×0.86 9.12.5

收起

0.9+0.1= 1-0.8= 51÷3= 360÷4= 36+44=
3800-900=
4×12= 80-19= 7×13= 4.5-4= 5.6+4=
5.7+3.3=
10-4.4= 6+6.6= 9.5-2.7= 1-0.55= 3.7+4.8=
7...

全部展开

0.9+0.1= 1-0.8= 51÷3= 360÷4= 36+44=
3800-900=
4×12= 80-19= 7×13= 4.5-4= 5.6+4=
5.7+3.3=
10-4.4= 6+6.6= 9.5-2.7= 1-0.55= 3.7+4.8=
7+3.3=
0.9+1= 45÷3= 2.7+3.9= 18×4= 416÷4=
1-0.44= 0.7+0.9= 3.25+0.75=
14.6-0.4= 10-0.1=
14+0.78= 1-0.3= 5-0.08= 1.1-1=
1.64+2.35= 8.34-6.22= 12.6+3.4=
1.3+4.3 7.2+6.9 9.3-8.8 4.4+15.99 19.8-5.6 96.3-56.2
79.2+56.8 1.99+25.7 93.88-69.21 0.33+9.88 136.5-105.763.4+52.1
93.1-20.9 63.1-13.8 103.9+450.613.88-5.77 96.12+52.3 13.2+65.1
7
8.9-65.4 12.3+96.5 42.5-19.5 73.55-14.68 46.32+65.18
95.44+53.12 96.42-13.88 42.5-17.8 63.22-22.77 69.12+78.39
42.55-0.69 0.55-0.33 45.96-24.41 75.2-28.3 64.2+15.4
10.23-0.88 4.56+14.62 7.9+53.1 56.4+23.1 96.4-57.1 55.1+65.9
56.78-21.5 96.1-43.2

2.6+0.4 0.375+0.625 5.8+2 5-0.2 0.48+0.29
4.3-1.6 0.74-6.4 1-0.89 3-2.3
4.2+15.6 24.8-18.2 13+7.1 10-9.05 3.96+6.04 4.03-1.97
0.3+0.4 1.5+0.5 2.4+1.2 4.5-0.9 5.3-4.8 8+2.5
7.65+2.13 3.14-2.09 0.96+4.68 8-7.56
2.1+0.2= 0.3+0.7= 3.6+1.6= 7.5-0.5= 3.7-0.9=
2.13-0.02= 3.51+0.2= 102+0.3= 1.12-1.02= 4.5-0.01=
1.2+8.8= 4.3—4.3= 5—0.2=
2.2—1.4= 8.7—2.6= 4.7+2.3=
0.6—35= 6.3—0.6= 12.9—12=
①3.51-2.43= ②4.2-1.02= ③2.4+2.66= ④3.17+2.45=
⑤9+1.5= ⑥4.5-0.79= ⑦1.69+2.21= ⑧4.51+2.49=
6.45-3.29=3.16 3.29+3.16= 6.45-3.16=

12.4+0.28=12.68 12.68-0.28= 12.68-12.4=

3.58+12.7 8.07-2.074 10.475-4.75

0.3+0.7 0.75+0.25 4.6-3.6 5.7-4 4.7-0.9 0.35+1.25

8-2.5 2.56-0.37 3.9+2.03 1-0.2 3.6+2.4 0.5+7.25
3.58+12.7 8.07-2.074 10.475-4.75
0.3+0.7 0.75+0.25 4.6-3.6 5.7-4 4.7-0.9 0.35+1.25

8-2.5 2.56-0.37 3.9+2.03 1-0.2 3.6+2.4 0.5+7.25
9.3 + 6.98 24+ 9.9 13.8- 8.3 7.56-4.56
0.396÷1.2= 0.756÷0.36= 15.6×13=
0.18×15= 0.025×1.4= 3.06×36=
0.04×0.12= 3.84×2.6≈ 5.76×3=
(保留一位小数)
7.15×22= 90.75÷3.3 3.68×0.25
16.9÷0.13=130 1.55÷3.9 3.7×0.16
13.76× 1.8= 5.2× 1.6 8.4×1.3

6.4×0.5 4.48×0.4 5.25×5
35.4×4.2 0.042×0.54 0.76×0.32

0.25×0.046 2.52×3.4 1.08×25

2.5÷0.7= (保留三位小数) 10.1÷3.3= (商用循环小数)
10.75÷12.5= (用乘法验算) 3.25×9.04= (用除法验算)


0.43×0.28= 6.45×0.73= 4.6×0.6=
8.9×0.05= 3.08×0.43= 1.5×26.7=
5.22÷29= 18.72÷3.6= 13.95÷3.1=

7.15×22 90.75÷3.3 3.68×0.25
1. 用竖式计算.18.25×34=
2. 用竖式计算.9.35×4.2=
3. 用竖式计算.15.07×9.8=
4. 用竖式计算.7.02×0.56= (得数保留两位小数)
30.8÷[14-(9.85+1.07)] [60-(9.5+28.9)]÷0.18 2.881÷0.43-0.24×3.5 20×[(2.44-1.8)÷0.4+0.15] 28-(3.4 1.25×2.4) 2.55×7.1 2.45×7.1 777×9 1111×3 0.8×〔15.5-(3.21 5.79)〕 (31.8 3.2×4)÷5 31.5×4÷(6 3) 0.64×25×7.8 2.2 2÷2.5 2.5÷2 194-64.8÷1.8×0.9 36.72÷4.25×9.9 5180-705×6 24÷2.4-2.5×0.8 (4121 2389)÷7 671×15-974 469×12 1492 405×(3213-3189) 3.416÷(0.016×35) 0.8×[(10-6.76)÷1.2] 19.4×6.1×2.3 5.67×0.2-0.62 18.1×0.92 3.93 0.0430.24 0.875 0.4×0.7×0.25 0.75×102 100-56.23 0.78 5.436 1 4.07×0.86 9.12.5
ok

收起

0.9+0.1= 1-0.8= 51÷3= 360÷4= 36+44=
3800-900=
4×12= 80-19= 7×13= 4.5-4= 5.6+4=
5.7+3.3=
10-4.4= 6+6.6= 9.5-2.7= 1-0.55= 3.7+4.8=
7...

全部展开

0.9+0.1= 1-0.8= 51÷3= 360÷4= 36+44=
3800-900=
4×12= 80-19= 7×13= 4.5-4= 5.6+4=
5.7+3.3=
10-4.4= 6+6.6= 9.5-2.7= 1-0.55= 3.7+4.8=
7+3.3=
0.9+1= 45÷3= 2.7+3.9= 18×4= 416÷4=
1-0.44= 0.7+0.9= 3.25+0.75=
14.6-0.4= 10-0.1=
14+0.78= 1-0.3= 5-0.08= 1.1-1=
1.64+2.35= 8.34-6.22= 12.6+3.4=
1.3+4.3 7.2+6.9 9.3-8.8 4.4+15.99 19.8-5.6 96.3-56.2
79.2+56.8 1.99+25.7 93.88-69.21 0.33+9.88 136.5-105.763.4+52.1
93.1-20.9 63.1-13.8 103.9+450.613.88-5.77 96.12+52.3 13.2+65.1
7
8.9-65.4 12.3+96.5 42.5-19.5 73.55-14.68 46.32+65.18
95.44+53.12 96.42-13.88 42.5-17.8 63.22-22.77 69.12+78.39
42.55-0.69 0.55-0.33 45.96-24.41 75.2-28.3 64.2+15.4
10.23-0.88 4.56+14.62 7.9+53.1 56.4+23.1 96.4-57.1 55.1+65.9
56.78-21.5 96.1-43.2

2.6+0.4 0.375+0.625 5.8+2 5-0.2 0.48+0.29
4.3-1.6 0.74-6.4 1-0.89 3-2.3
4.2+15.6 24.8-18.2 13+7.1 10-9.05 3.96+6.04 4.03-1.97
0.3+0.4 1.5+0.5 2.4+1.2 4.5-0.9 5.3-4.8 8+2.5
7.65+2.13 3.14-2.09 0.96+4.68 8-7.56
2.1+0.2= 0.3+0.7= 3.6+1.6= 7.5-0.5= 3.7-0.9=
2.13-0.02= 3.51+0.2= 102+0.3= 1.12-1.02= 4.5-0.01=
1.2+8.8= 4.3—4.3= 5—0.2=
2.2—1.4= 8.7—2.6= 4.7+2.3=
0.6—35= 6.3—0.6= 12.9—12=
①3.51-2.43= ②4.2-1.02= ③2.4+2.66= ④3.17+2.45=
⑤9+1.5= ⑥4.5-0.79= ⑦1.69+2.21= ⑧4.51+2.49=
6.45-3.29=3.16 3.29+3.16= 6.45-3.16=

12.4+0.28=12.68 12.68-0.28= 12.68-12.4=

3.58+12.7 8.07-2.074 10.475-4.75

0.3+0.7 0.75+0.25 4.6-3.6 5.7-4 4.7-0.9 0.35+1.25

8-2.5 2.56-0.37 3.9+2.03 1-0.2 3.6+2.4 0.5+7.25
3.58+12.7 8.07-2.074 10.475-4.75
0.3+0.7 0.75+0.25 4.6-3.6 5.7-4 4.7-0.9 0.35+1.25

8-2.5 2.56-0.37 3.9+2.03 1-0.2 3.6+2.4 0.5+7.25
9.3 + 6.98 24+ 9.9