1 / 16

# 连减的简便计算 - PowerPoint PPT Presentation

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about '连减的简便计算' - quentin-bonner

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

### 连减的简便计算

234-66-34

234-66-34

234-66-34

=168-34

=134（页）

=234-（66+34）

=234-100

=134（页）

=234-34-66）

=200-66

=134（页）

234－66－34

=

234－(66＋34)

=

234－34－66

a－b－c=a－(b＋c)

=a－c－b

868－52 －48=868 (52＋ )

48

1500

1500－28－272= －(28 272)

415－74－26= ( )

415

74

26

684－(584+37)=

684

584

37

800－138－162 （ ）

800－138－162

=662－162

=500

A

800－138－162

=800－（138＋162）

=800－300

=500

B

472－49－272 （ ）

A

472－49－272

=472－（49＋272）

=472－321

=151

B

472－49－272

=472－272－49

=200－49

=151

（1）528－53－47

（2）545－167－145

（3）847－（47＋89）

947－（47＋800）

=947－47＋800

=900＋800

=1700 ( )

651－481－151

=651－151

=500－481

=19 ( )

947－(47＋800)

=947－47－800

=900－800

=100

×

651－481－151

=651－151－481

=500－481

=19

×

427－73－127

=427－(127＋73)

=427－200

=227 ( )

144－56＋44

=144－(56＋44)

=144－100

=44 ( )

144－56＋44

=88＋44

=132

×

(1)487－187－139－61 (2)300－123－75－77

=(487－187)－(139＋61)

=300－200

=100

=300－75－123－77

=225－(123＋77)

=225－200

=25