Question

15 x 99 + 15 x 1 = ? 

tính theo 2 cách 

Answer 1

cách 1 15 x 99 + 15 x 1

= 15 x ( 99+1)

= 15 x 100

= 1500

cách 2 15 x 99 +15 x1 

=1485+15

= 1500

Answer 2

c1 : 

15 x 99 + 15 x 1 

= 1485 + 15

= 1500 . 

c2 :

15 x 99 + 15 x 1

= 15 x ( 99 + 1 )

= 15 x 100 

= 1500 . 

Answer 3

C1 : = 1485 + 15 

        = 1500

C2 : = 15 * ( 99+ 1 )

        = 15 * 100

         = 1500

Answer 4

C1 :15 x 99 + 15 x 1

= 1485 + 15

= 1500

C2 : 15 x 99 + 15 x 1

= 15 x (99 + 1)

= 15 x 100

= 1500

Answer 5

nho k minh nhe

Answer 6

nho nhe

Answer 7

nho k nhe

Answer 8

\(cách1:15\times99+15\times1\)

            \(=1485+15\)

            \(=1500\)

\(cách2:15\times99+15\times1\)

              \(=15\times\left(99+1\right)\)

              \(=15\times100\)

              \(=1500\)

Answer 9

nho k nhe

Answer 10

cach 1 : 15 × 99 +15 ×1 = 15 × ( 99 + 1 ) = 15×100=1500

cach2: 15 ×99 +15 ×1 = 1485 + 15 =1500

Answer 11

c1 : 

15 x 99 + 15 x 1 

= 1485 + 15

= 1500 . 

c2 :

15 x 99 + 15 x 1

= 15 x ( 99 + 1 )

= 15 x 100 

= 1500 .