\(\dfrac{44\cdot52\cdot60}{11\cdot13\cdot15}=\dfrac{4\cdot11\cdot4\cdot13\cdot4\cdot15}{11\cdot13\cdot15}=4^3=64\)

(44x52x60):(11x13x15)
= ( 44 : 11) x ( 52 : 13 ) x ( 60 : 15 )
=  4 x 4 x 4
= 64
Nếu có gì sao, sửa hộ mình nha!☺❤

1234.2014+2014.8766

=2014.(1234+8766)=2014.10000=20140000

\(1234.2014+2014.8766\)

\(=2014.\left(1234+8766\right)\)

\(=2014.10000\)

\(=20140000\)

341.67+341.16+659.83

=341.(67+16)+659.83

=341.83+659.83

=83.(341+659)

=83.1000

=83000

=341(67+16)+659.83=341.83+659.83=(341+659)83=1000.83=83000

a, =512 . -126 - 128 . -512

= -512 . 126 - 128 . -512

= -512.[126 - 128]

= -512.-2

=1024

b, =2155 - 174 - 2155 + 106

=2155-2155 - 174 +106

=0 - 174 +106

=-68

a) \(=512\cdot\left(2-128\right)+128\cdot512 \)

\(=512\cdot\left(2-128+128\right)\)

\(=512\cdot2=1024\)

a: =387-87-224=300-224=76

b: =-75-25+329

=329-100=229

c: =-21-27+31+24=-48+55=7

d: =21(23+17)=21*40=840

e: =12-57+57-12

=0

f: =-6(36+64)=-6*100=-600

bn thi violympic 5 à vòng nào dợ

giai ho minh voi minh can lam 4 bai nay that la khan truong khong thi teo . bai nay khong o violypic nhung ma minh can gia nhanh de chep vao mai con di haoc cho co giao kiem tra khong hti nhat . nhanh nhanh minh can gap rat rat rat rat la gpa gap khong co thoi gian nua dau ma minh minh can su giup do that la nhanh khong sap chet roi . minh xin chap tay cau mong moi nguoi giup , ra lop taon la may thang mat day chang biet tra on di dau . moi nguoi giup minh .

bai toan @gmail.com.vn

e/ = -561

f/ = -1350

g/ = -80

tích nha..^.^...♥