13 bài tập Đo diện tích – đo thể tích có lời giải
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Điền dấu (>; <; =) thích hợp vào chỗ chấm:

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Điền dấu (>; <; =) thích hợp vào chỗ chấm:

\(850{\rm{c}}{{\rm{m}}^2}...12{\rm{d}}{{\rm{m}}^2}\)                               \(302{\rm{m}}{{\rm{m}}^2}...3{\rm{d}}{{\rm{m}}^2}2{\rm{m}}{{\rm{m}}^2}\)

\(3{{\rm{m}}^2}92{\rm{d}}{{\rm{m}}^2}...4{{\rm{m}}^2}\)                                      \(51{\rm{k}}{{\rm{m}}^2}...510{\rm{h}}{{\rm{m}}^2}\)

\(2015{{\rm{m}}^2}...2{\rm{h}}{{\rm{m}}^2}15{{\rm{m}}^2}\)                     \(32{\rm{k}}{{\rm{m}}^2}45{{\rm{m}}^2}...3200{\rm{h}}{{\rm{m}}^2}\)

\(67{\rm{ }}{{\rm{m}}^2}...6700{\rm{ c}}{{\rm{m}}^2}\)                                         \(27{\rm{ d}}{{\rm{m}}^2}34{\rm{ c}}{{\rm{m}}^2}...2734{\rm{c}}{{\rm{m}}^2}\)

\(573{\rm{ h}}{{\rm{m}}^2}...57{\rm{k}}{{\rm{m}}^2}\)                               \(34{\rm{d}}{{\rm{m}}^2}34{\rm{m}}{{\rm{m}}^2}...3434{\rm{c}}{{\rm{m}}^2}\)

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Giải thích

\(850{\rm{c}}{{\rm{m}}^2} < 12{\rm{d}}{{\rm{m}}^2}\) vì \(12{\rm{d}}{{\rm{m}}^2} = 12 \times 100 = 1200{\rm{c}}{{\rm{m}}^2}\)

\(302{\rm{m}}{{\rm{m}}^2} < 3{\rm{d}}{{\rm{m}}^2}2{\rm{m}}{{\rm{m}}^2}\) vì \(3{\rm{d}}{{\rm{m}}^2}2{\rm{m}}{{\rm{m}}^2} = 30002{\rm{m}}{{\rm{m}}^2}\)

\(3{{\rm{m}}^2}92{\rm{d}}{{\rm{m}}^2} < 4{{\rm{m}}^2}\) vì \(4{{\rm{m}}^2} = 400{\rm{d}}{{\rm{m}}^2}\) và \(3{{\rm{m}}^2}92{\rm{d}}{{\rm{m}}^2} = 392{\rm{d}}{{\rm{m}}^2}\)

\(51{\rm{k}}{{\rm{m}}^2} > 510{\rm{h}}{{\rm{m}}^2}\) vì \(51{\rm{k}}{{\rm{m}}^2} = 5100{\rm{h}}{{\rm{m}}^2}\)

\(2015{{\rm{m}}^2} < 2{\rm{h}}{{\rm{m}}^2}15{{\rm{m}}^2}\) vì \(2{\rm{h}}{{\rm{m}}^2}15{{\rm{m}}^2} = 20015{{\rm{m}}^2}\)

\(32{\rm{k}}{{\rm{m}}^2}45{{\rm{m}}^2} > 3200{\rm{h}}{{\rm{m}}^2}\) vì \(3200{\rm{h}}{{\rm{m}}^2} = 32{\rm{k}}{{\rm{m}}^2}\)

\(67{\rm{ }}{{\rm{m}}^2} > 6700{\rm{ c}}{{\rm{m}}^2}\) vì \(67{{\rm{m}}^2} = 670000{\rm{c}}{{\rm{m}}^2}\)

\(27{\rm{ d}}{{\rm{m}}^2}34{\rm{ c}}{{\rm{m}}^2} = 2734{\rm{c}}{{\rm{m}}^2}\) vì \(27{\rm{d}}{{\rm{m}}^2}34{\rm{c}}{{\rm{m}}^2} = 27{\rm{d}}{{\rm{m}}^2} + 34{\rm{c}}{{\rm{m}}^2} = 2700{\rm{c}}{{\rm{m}}^2} + 34{\rm{c}}{{\rm{m}}^2}\)

\(573{\rm{ h}}{{\rm{m}}^2} < 57{\rm{k}}{{\rm{m}}^2}\) vì \(57{\rm{k}}{{\rm{m}}^2} = 5700{\rm{h}}{{\rm{m}}^2}\)

\(34{\rm{d}}{{\rm{m}}^2}34{\rm{m}}{{\rm{m}}^2} < 3434{\rm{c}}{{\rm{m}}^2}\) vì \(3434{\rm{c}}{{\rm{m}}^2} = 3400{\rm{c}}{{\rm{m}}^2} + 34{\rm{c}}{{\rm{m}}^2} = 34{\rm{d}}{{\rm{m}}^2}34{\rm{c}}{{\rm{m}}^2}\)