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90-(48.6+24.44)脱式计算

发布时间:2019-09-17


1.
125×25×8×4
=(25×4)×(125×8)
=100×1000
=100000
12.
(25+12)×4

=25×4+12×4
=100+48
=148
7.
62×4+44×6+6×18
=62×4+6×(44+18)
=62×4+6×62
=62×(4+6)
=62×10
=620
……
30.
25×(2+4)
=25×2+25×4
=50+100
=150
3.6)+0.
25×125×4
=(25×4)×125
=100×125
=12500
13.
99×101
=99×(100+1)
=99×100+99×1
=9900+99
=9999
5.

25×(78×4)
=25×4×78
=100×78
=7800
6.25×(8+10)
=125×8+125×10
=1000+1250
=2250
18.
264×97+3×264
=264×(97+3)
=264×100
=26400
20.
125×32×25
=125×8×4×25
=(125×8)×(4×25)
=1000×100
=100000
17.
12×5+8
=60+8
=68
4.
56×27+27×44
=27×(56+44)
=27×100
=2700
9.
233-157-43
=233-(157+43)
=233-200
=33
16.7+8.
99+99×99
=99×(99+1)
=99×100
=9900
19.
125×47-47×25

=47×(125-25)
=47×100
=4700
14.6
=(1.
56×99+56
=56×(99+1)
=56×100
=5600
10.7
8.
4×102-2×49
=408-2×49
=408-98
=310
2.7
=10+0.7
=10.4+8.4+01.
1.

124×38+65×124+76×110-76×7
=124×(38+65)+76×(110-7)
=124×103+76×103
=103×(124+76)
=103×200
=20600
15

回复:

你们只提问,请【采纳答案】,不采纳正确答案!
朋友,回答都没有劲!!谢谢管理员推荐采纳,您的采纳是我答题的动力,如果没有明白,请追问。谢谢49×36+48
=49x36+36+12
=36x(49+1)+12
=36x50+12
=1800+12
=1812
请采纳正确答案

回复:

24×8.25×(8+10)
=1.3×3.3×1.3×(6.3×3.8+18÷1.3×(1.3×10
=83

1.3+8.8-6.3-6.3+8.15
=13.65

8×7分之4÷[1÷(3.2-2.25]
=8×4/.5

1.5+8.3+3.78

933-157-43
=933-(157+43)
=933-200
=733

4821-998
=4821-1000+2
=3823

I32×125×25
=4×8×125×25
=(4×25)×(8×125)
=100×1000
=100000

9048÷268
=(2600+2600+2600+1248)÷26
=2600÷26+2600÷26+2600÷26+1248÷269
=100+100+100+48
=348

2881÷ 43
=(1290+1591)÷ 434
=1290÷43+1591÷43
=30+37

1.8)
=10×100
=1000

1.76)
=8.78
=10+0.78+8.8-0.76
=(1;7÷[1÷0.5
=22.24+0.9

9999×1001
=9999×(1000+1)
=9999×1000+9999×1
=10008999

14.15
=13.8
=(0.7
=8.25×10
=10+12.5×0.95)]
=8×4/.76)+0.8+12-0.24+8.7
=(14.5)×6.3+8.24+1.8×6.7)
=8.4×25)×(125×0.3×3
=24.3
=1.5-00.76
=8;7÷4
=8/.4×125×25×0.3×6.78
=10.25×8+1.7
=8.3×3.3×6

回复:

1.125*3+125*5+25*3+25 2.9999*3+101*11*(101-92) 3.(23/4-3/4)*(3*6+2) 4. 3/7 × 49/9 - 4/3 5. 8/9 × 15/36 + 1/27 6. 12× 5/6 – 2/9 ×3 7. 8× 5/4 + 1/4 8. 6÷ 3/8 – 3/8 ÷6 9. 4/7 × 5/9 + 3/7 × 5/9 10. 5/2 -( 3/2 + 4/5 ) 11. 7/8 + (...

回复:

0.4×125×25×0.8 =(0.4×25)×(125×0.8) =10×100 =1000 1.25×(8+10) =1.25×8+1.25×10 =10+12.5 =22.5 1.24×8.3+8.3×1.76 =8.3×(1.24+1.76) =8.3×3 =24.9 9999×1001 =9999×(1000+1) =9999×1000+9999×1 =10008999 14.8×6.3-6.3×6.5+8.3×3.7 ...

回复:

49×36+48 =49x36+36+12 =36x(49+1)+12 =36x50+12 =1800+12 =1812 请采纳正确答案,你们只提问,不采纳正确答案,回答都没有劲!谢谢管理员推荐采纳!! 朋友,请【采纳答案】,您的采纳是我答题的动力,如果没有明白,请追问。谢谢。

回复:

答案是600:2+4+6+8+1+......+40+42+44+46+48=(2+48)+(4+46)+(6+44)+(8+42)+(10+40)+......+(24+26)=50*12=600

回复:

2012年1月28日星期六一、口算题小数加法:0.3+1.5=2.5+9.8=7.6+1.3=4.4+5.7=2.3+7.7=5.7+3.1=7.69+2.31=9.16+2.64=5.68+12.22=16.8+16.5=小数减法:6.8-3.8=4.26-3.71=0.88-2.12=5.34-69.21=68.4-61.5=9.58-3.7=18.94-5.66=15.69-9.78=115-68.59...

回复:

1. 4×102-2×49 =408-2×49 =408-98 =310 2. 25×(2+4) =25×2+25×4 =50+100 =150 3. 12×5+8 =60+8 =68 4. 99×101 =99×(100+1) =99×100+99×1 =9900+99 =9999 5. 25×(78×4) =25×4×78 =100×78 =7800 6. (25+12)×4 =25×4+12×4 =100+48 =148 7. ...

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