a
12 * 13 * 14
= 156 * 14
= 2184
b
67 * 12 +33 * 12
= (67 + 33) * 12
= 100 * 12
= 1200
c
100 * 12 + 100 * 88
= (12+88) * 100
= 100 * 100
= 10000
a . 12 x 13 x 14 b) 67 x 12 + 33 x 12 c) 100 x 12 + 100 x 88
= 156 x 14 = ( 67 + 33 ) x 12 = 100 x ( 12 + 88 )
= 2184 = 100 x 12 = 100 x 100
= 1200 = 10000
a. 12 x 13 x 14 = 2184
b. 67 x 12 + 33 x 12
= (33 + 67) x 12
= 100 x 12
= 1200
c. 100 x 12 + 100 x 88
= 100 x (12 + 88)
= 100 x 100
= 10000
hok tốt!
a. 12 x 13 x 14 = 156 x 14 = 2184
b. 67 x 12 + 33 x 12
= 12 x ( 67 + 33 ) = 12 x 100 = 1200
c. 100 x 12 + 100 x 88
= 100 x ( 12 + 88 ) = 100 x 100 = 10000
a) = 2184
b) = 1200
c) = 10000
Tính :
a. 12 × 13 × 14
= ( 12 × 14 ) × 13
= 168 × 13
= 2184
b. 67 × 12 + 33 × 12
= 12 × ( 67 + 33 )
= 12 × 100
= 1 200
c . 100 × 12 + 100 × 88
= 100 × ( 12 + 88 )
= 100 × 100
= 10 000
a. 12 x 13 x 14
= 156 x 14
= 2184
b. 67 x 12 + 33 x 12
= (67 + 33) x 12
= 100 x 12
= 1200
c. 100 x 12 + 100 x 88
= 100 x (12 + 88)
= 100 x 100
= 10000
\(a,12\times13\times14=156\times14=2184\)
\(b,67\times12+33\times12=12\times\left(67+33\right)=12\times100=1200\)
\(c,100\times12+100\times88=100\times\left(12+88\right)=100\times100=10000\)
\(Tk\) \(mk\) \(nha\)