Question

[Nguyễn Ngọc Bảo Trang]

Viết theo mẫu Mẫu: 4,25 ×30 = 4,25 ×3 ×10 = 12,75 ×10 = 127,5

a) 6,34×40 = ....................................................................................

b) 0,67 ×50 = ....................................................................................

c) 0,09 ×500 = ...................................................................................

.d) 12,45 ×400 = ..................................................................................

Answer 1

[Bùi Nguyễn Đại Yến]

A. 6,34 x 40 = 6,34 x 4 x 10 = 25,36 x 10 = 253,6

B. 0,67 x 50 = 0,67 x 5 x 10 = 3,35 x 10 = 33,5

C. 0,09 x 500 = 0,09 x 5 x 100 = 0,45 x 100 = 45

D. 12,45 x 400 = 12,45 x 4 x 100 = 49,8 x 100 = 4980

Answer 2

[Nguyễn Ngọc Khánh Huyền]

a) 6,34×40 = 6,34 x 4 x 10 = 25,36 x 10 = 253,6
b) 0,67 ×50 = 0,67 x 5 x 10 = 3,35 x 10 = 33,5
c) 0,09 ×500 = 0,09 x 5 x 100 = 0,45 x 100 = 45
d) 12,45 ×400 = 12,45 x 4 x 100 = 49,8 x 100 = 4980