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R
8
6 tháng 8 2018
a) 378 + 459 + 162 - 359
= 378 + 162 + 100
= 540 + 100
= 640
Học tốt nhé~
6 tháng 8 2018
a) (378 + 459 + 162) - 359
= (378 + 162) + (459 - 359)
= 440 + 100 = 540
b) 54 + 1246 - 753 - 247
= (54 + 1246) - (753 + 247)
= 1300 - 1000 = 300
c) (647 + 835) + (645 + 833)
= 647 + 835 + 645 + 833
= (647 + 833) + (835 + 645)
= 1440 + 1440 = 2880
NB
0
MK
4
11 tháng 2 2017
xét tử số : 637 x 527 = 637 x ( 526 + 1 )
637 x 526 + 637 x 1 + 10
=637 x 526 + 647
vậy phân số này = 1
mình không rõ cách trình bày nên nghĩ vậy !!!
CM
12 tháng 8 2018
Số lớn nhất trong các số 459 495; 459 549; 549 954 và 549 945 là 549 954.
Chọn C.
NT
10 tháng 1 2021
844855klhdgcoib lgcgkjkhtzkgzfdgolpycockityxoiyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc;l,bfxhklxylhkcfcckhdpoixtgjoii5uerkjjjjjjjjjjeoiwpkjlr4tjhhhhfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
BT
5
TP
1
H9
HT.Phong (9A5)
CTVHS
6 tháng 7 2023
a) \(\left(-354\right)-75\)
\(=-429\)
b) \(\left(-445\right)-\left(-548\right)\)
\(=\left(-445\right)+548\)
\(=103\)
c) \(\left|-72\right|-455\)
\(=72-455\)
\(=-383\)
d) \(-\left|-1945\right|-\left|-67\right|\)
\(=-1945-67\)
\(=-2012\)
24 tháng 7 2018
mk bt làm mỗi 1 câu thui thông cảm
B) 37 x 62 + 37 x 38
37 x ( 62+38)
37 x 100
3700
hok tốt
T
24 tháng 7 2018
a, 59 + 532 + 267 + 268 + 733
= 59 + ( 532 + 268 ) + ( 267 + 733 )
= 59 + 800 + 1000
= 859 + 1000
= 1859
b, 37 × 62 + 37 × 38
= 37 × ( 62 + 38 )
= 37 × 100
= 3 700
c, ( 1356 + 845 ) - ( 356 + 645 )
= 1356 + 845 - 356 - 645
= ( 1356 - 356 ) + ( 845 - 645 )
= 1000 + 200
= 1 200
a ) 768 - 549 + 548
= 219 + 548
= 767
b ) ( 647 + 835 ) - ( 645 + 833 )
= 1482 - 1478
= 4
Answer : a ) 767
b ) 4
a) 786 -549 + 548
=786+(548-549)
=786-1=785
b) (647+835)-(645+833)
=647+835-645-833
= (647-645)+(835-833)
=2+2=4
k cho mk nha