Question

tính nhanh:

234 + 28 - ( -234 ) + ( -108 ) + 120

625 - ( 127 - 56 ) + ( 144 - 625 )

Answer 1

Lời giải:
$234+28-(-234)+(-108)+120=234+28+234-108+120$

$=234.2-(108-28)+120$

$=468-80+120=468+40=508$
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$625-(127-56)+(144-625)=625-127+56+144-625$

$=(625-625)+(144+56)-127$

$=0+200-127=73$

Answer 2

234 + 28 - ( -234 ) + ( -108 ) + 120=234+28+234-108+120

=234+(108+120)-28=234+(228-28)

=234+200=434

625 - ( 127 - 56 ) + ( 144 - 625 )=625-127+56+144-625

=127+(625-625)+(144+56)=127+0+200

=127+200=327

Cho mk xin lỗi bài mk sai nha bn