bằng 264

-168 chuẩn luôn tick nha

Trả lời:

b.(-50+19+143)-(-79+25+48)

= 112 - (-6)

=118

a.(187-23)-(20-180)

= 164- (-160)

=324

         ~Học tốt~

114

11

5700 : 50 = 114

143 : 13 = 11

1.114

2.11

92 + 71 + 108 = (92 + 108) + 71 = 200 + 71 = 271

32 x 47 + 53 x 47 + 47 x 15 = 47(32 + 53 + 15)

                                         = 47.100

                                         = 4700

90 x 143 - 43 x 90 = 90.(143 - 43) = 90.100 = 9000

(1200 + 60) : 12 = 1800 : 12 = 150

2 x 18 x 24 + 3 x 50 x 16 + 12 x 32 x 4 = 18.(2.24) + 50.(3.16) + 32.(12.4) = 18.48 + 50.48 + 32.48 = 48(18 + 50 + 32) = 48.100 = 4800

92+71+108=71+92+108=71+200=271

92+71+108=71+(92+108)=71+200=271

90x143-43x90=90x(143-43)=90x100=9000

32x47+53x47+47x15=47x(32+53+15)=47x100=4700

(1200+60):12=1260:12=105

2x18x24+3x50x16+12x32x4=(2x24)x18+(3x16)x50+(12x4)x32

=48x18+48x50+48x32

=48x(18+50+32)

=48x100=4800

b: =47-47=0

(-50 + 19 + 143)-(-79 + 25 +48)

= (-31 + 143 ) - (-54 + 48 )

= 112 - (-6)

= 112 + 6

= 118

 \(\left(-50+19+143\right)-\left(-79+25+48\right)\) 

\(=-50+19+143+79-25-48\)

\(=-50-25+\left(79-48+19\right)+143\) 

\(=-75+50+143\)

\(=-25+143\) 

\(=118\)

1. 1996 ++ 3012 + 5988 + 7004

= ( 1996 + 7004 ) + ( 3012 + 5988)

= 9000 + 9000

= 18000

2.1253 + 254 + 2345 - 253 - 154

= ( 1253 - 253 ) + ( 254 - 154 )

= 1000 + 100

= 1100

3. 123 + 456 + 77 + 546

= ( 123 + 77 ) + ( 456 + 546)

= 200 + 1002

= 1202

4.50 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5 - 5

= 50 - ( 5 x 11 )

= 50 - 55

= -5

5.143 - ( 80 + 43 )

= 143 - 123

= 20

Chúc bạn học tốt!

1.1996+7004=9000+3012+5988=1800