để ý bố mày tí

a) \(0 , 125 \times 7 , 21 \times 80\)

\(= \left(\right. 0 , 125 \times 80 \left.\right) \times 7 , 21\)

\(= 10 \times 7 , 21\)

\(= 72 , 1\)

b) \(7 , 3 \times 0 , 001 + 92 , 7 \times 0 , 001\)

\(= 0 , 001 \times \left(\right. 7 , 3 + 92 , 7 \left.\right)\)

\(= 0 , 001 \times 100\)

\(= 0 , 1\)

Số tiền giảm đi:

\(15750000 \times 10 \% = 1575000\) (đồng)

Giá bán của chiếc máy tính sau khi giảm giá:

\(15750000 - 1575000 = 14175000\) (đồng)

a) 31,6 + 17,92=49,52

b) 315,7 − 12,23=303,47

c) 3,6 × 4,1=14,76

d) 32,4 : 4,5=7,2 .....

a) 63 tạ = 6,3 tấn

b) 721 mm = 0,721 m

c) 9 km² 7ha = 9,07 km²

d) 4 l 4 ml = 4,004 l

jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjijjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

jijjjjjjjjjjj

jjjjj
jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjijjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj

tìm chữ i

123422+123123=?

11

c/ọ/l/ồ/n=lọ cồn

dcmm/

đồng cát mênh mông