10x76+10x24=10x(76+24)=10x100=1000
89x5+11x5=5x(89+11)=5x100=500
tk cho m nha!
a. = 10 x (76 + 24)
= 10 x 100
= 1000
b. = 5 x (89 + 11)
= 5 x 100
= 500
hc tốt
10x76+10x24
=10x(76+24)
=10x100
=1000
89x5+11x5
=5x(89+11)
=5x100
=500
hk tốt k mik nha :D
(10x10)x(76+24) =100x100 =10000 (89+11)x (5x5) =100x25 =2500
10 X 76 + 10 X 24 = 760 + 240 = 1000
89 X 5 + 11 X 5 = 445 + 55 = 500
HỌC TỐT!!!