Viết số hoặc phân số thích hợp vào chỗ chấm:

7/13

\(1{\rm{c}}{{\rm{m}}^2} = ...{\rm{d}}{{\rm{m}}^2}\) \(21{\rm{m}}{{\rm{m}}^2} = .....{{\rm{m}}^2}\)

\(17{\rm{c}}{{\rm{m}}^2} = ...{\rm{m}}{{\rm{m}}^2}\) \(7{\rm{k}}{{\rm{m}}^2}5{\rm{h}}{{\rm{m}}^2} = ....{\rm{da}}{{\rm{m}}^2}\)

\(2100{\rm{m}}{{\rm{m}}^2} = ....{\rm{c}}{{\rm{m}}^2}\) \(2{{\rm{m}}^2}12{\rm{c}}{{\rm{m}}^2} = ....{\rm{c}}{{\rm{m}}^2}\)

\(45{\rm{c}}{{\rm{m}}^2} = ...{\rm{d}}{{\rm{m}}^2}\) \(34{\rm{d}}{{\rm{m}}^2} = ....{{\rm{m}}^2}\)

\(347{\rm{ d}}{{\rm{m}}^2} = ...{\rm{ c}}{{\rm{m}}^2}\) \(90{{\rm{m}}^2}200{\rm{c}}{{\rm{m}}^2} = ...{\rm{ d}}{{\rm{m}}^2}\)

Nhập câu trả lời ở đây

0/3000 ký tự

Giải thích

\(1{\rm{c}}{{\rm{m}}^2} = 1:100{\rm{ d}}{{\rm{m}}^2} = 0,01{\rm{d}}{{\rm{m}}^2}\)

\(21{\rm{m}}{{\rm{m}}^2} = 21:1000000{{\rm{m}}^2} = 0,000001{{\rm{m}}^2}\)

\(17{\rm{c}}{{\rm{m}}^2} = 17 \times 100{\rm{m}}{{\rm{m}}^2} = 1700{\rm{ m}}{{\rm{m}}^2}\)

\(7{\rm{k}}{{\rm{m}}^2}5{\rm{h}}{{\rm{m}}^2} = 7{\rm{k}}{{\rm{m}}^2} + 5{\rm{h}}{{\rm{m}}^2} = 7 \times 10000{\rm{da}}{{\rm{m}}^2} + 5 \times 100{\rm{da}}{{\rm{m}}^2} = 70500{\rm{da}}{{\rm{m}}^2}\)

\(2100{\rm{m}}{{\rm{m}}^2} = 2100:100{\rm{c}}{{\rm{m}}^2} = 21{\rm{c}}{{\rm{m}}^2}\)

\(2{{\rm{m}}^2}12{\rm{c}}{{\rm{m}}^2} = 2 \times 10000{\rm{c}}{{\rm{m}}^2} + 12{\rm{c}}{{\rm{m}}^2} = 20012{\rm{c}}{{\rm{m}}^2}\)

\(45{\rm{c}}{{\rm{m}}^2} = 45:100{\rm{d}}{{\rm{m}}^2} = 0,45{\rm{d}}{{\rm{m}}^2}\)

\(34{\rm{d}}{{\rm{m}}^2} = 34:100{{\rm{m}}^2} = 0,34{{\rm{m}}^2}\)

\(347{\rm{d}}{{\rm{m}}^2} = 347 \times 100{\rm{c}}{{\rm{m}}^2} = 34700{\rm{c}}{{\rm{m}}^2}\)

\(90{{\rm{m}}^2}200{\rm{c}}{{\rm{m}}^2} = 90{{\rm{m}}^2} + 200{\rm{c}}{{\rm{m}}^2} = 90 \times 100{\rm{d}}{{\rm{m}}^2} + 200:100{\rm{d}}{{\rm{m}}^2} = 9002{\rm{d}}{{\rm{m}}^2}\)