Question

8⁴:8²

7⁶:7³

Tính nhanh :

25.4.8.5

40.10.5.6.7

 

Answer 1

\(8^4:8^2=8^2=64\)

\(7^6:7^3=7^3=343\)

\(25.4.8.5=\left(25.4\right).\left(8.5\right)=100.40=4000\)

\(40.10.5.6.7=\left(40.10\right).30.7=400.30.7=12000.7=84000\)

Answer 2

8^4 : 8^2 = 8^( 4 - 2 ) = 8^2 = 64

7^6 : 7^3 = 7^( 6 - 3 ) = 7^3 = 343

Tính nhanh :

25.4.8.5 = 100 . 40 = 4000

40.10.5.6.7 = 400.30.7 = 12000 . 7 = 84000